Answer:
Orbitals
Explanation:
Period number directly correlates to how many orbitals a given element has. For instance, Period 1 will have 1 orbital, whereas Period 7 will have 7 orbitals
where within the saturated zone do you suppose the concentration of carbonic acid is greater- shallow or deep?
The concentration of hydrogen ions increases as a result of a series of chemical reactions that take place when CO2 is absorbed by saltwater.
The seawater's acidity rises as a result, and carbonate ions become relatively less common. Seawater absorbs carbon dioxide, which is present naturally in the atmosphere. Carbonic acid (H2CO3) is created when water and carbon dioxide mix. This weak acid dissociates into hydrogen ions (H+) and bicarbonate ions (HCO3-). Carbonate from the sea is used by marine life to create their shells and skeletons. Carbonate is less readily available for animals to build their shells and skeletons as seawater becomes more acidic. Shells and skeletons may dissolve in highly acidic environments.
Learn more about reactions here-
https://brainly.com/question/28984750
#SPJ4
true or false: in order to balance the reaction of hydrogen gas (h2) with oxygen gas (o2) to form liquid h2o, a student adds a subscript of 2 to h2o (forming h2o2). this is an acceptable method of balancing the reaction described.
When the rate of reaction of bleach and dye are studied which reactant is in excess?.
The bleach was in excess compared to the dye in the reaction between bleach and dye.
What characteristics does bleach have?In the textile business, bleach is used to bleach cotton and linen. It is also used to bleach wood pulp in the paper industry and to bleach laundry.
It is the primary component of a solution that contains between 3 and 6 percent sodium hypochlorite (NaOCl), along with trace amounts of sodium hydroxide, hydrogen peroxide, and calcium hypochlorite.
A form of base that works particularly well at eliminating stains and colors is chlorine bleach.
A plot of ln(Abs) vs. time shows a straight line, indicating that the order with regard to the dye is "first order." The sequence of the reaction with respect to the bleach can be determined by looking at the rate constants and bleach volume.
To know more about bleach visit:
https://brainly.com/question/28907871
#SPJ4
what type of functional group is formed when an aldehyde and an alcohol are mixed together in the presence of a catalytic amount of acid?
The functional group that is formed when an aldehyde and an alcohol are mixed together in the presence of a catalytic amount of acid will be an Acetal.
Aldehyde may be defined as the functional group having the suffix as -al and represented as RCHO. In this functional group the carbon atom is in double bond with the oxygen atom satisfying the valency of each atom. Alcohols are functional groups having the suffix as -ol and represented as ROH. They are very important and have many characteristic features. Acetals are functional groups in which the carbon atom is bonded with two -OR groups. They are produced when alcohol and aldehyde are mixed in presence of Hydrochloric acid. If the reaction takes place without the presence of HCl, then Hemiacetal will be formed that is carbon atom will have one -OR group.
Learn more about Aldehydes at:
brainly.com/question/24344366
#SPJ4
explain the diffrence between rotation and revolution then use terms to explain how earth moon sun move relative to another one
Rotation refers to the movement of an object rotating around its own axis. Rotation refers to the orbital motion of an object around another object.
When the earth rotates it moves or revolves around the sun. The Earth's orbit around the Sun is called an orbit. It takes one year or 365 1/4 days for the Earth to make a complete orbit around the Sun. The moon revolves around the earth as the earth revolves around the sun. This is because the earth accelerates and decelerates as it orbits the sun.
Most of the apparent motion of the Sun comes from the Earth's rotation. As our planet rotates, the sun, moon, and all the stars appear to move from east to west, as if they were spinning in an office chair, while the walls all move in the opposite direction. It looks like you are. It is important to understand the difference between twists and turns. Rotating an object around its internal axis is called rotation. When an object orbits its outer axis it is called rotation.
Learn more about Rotation here:-https://brainly.com/question/26249005
#SPJ1
a student heats a sample of hydrate once, and the mass of the sample and the evaporating dish is 17.296 g. after a second heating cycle, the mass of the sample and the dish is 14.025 g. the student stops the heat/cool/weigh cycle after the second time. if the original mass of the evaporating dish and the hydrate was 29.936 g, and the mass of the evaporating dish alone was 1.61 g, what is the mass of water removed from the sample by heating? provide your response to three digits after the decimal.
Water weighs is 12.371 g.
What is the amount of water that was heated out of the sample?Mevoporation dish weighs 1.135 g.
Mevoporating dish plus a sample of MHydrate equals 25.637g
Mfirst heated sample plus Mevoporating dish = 16.428g
Mevoporation dish plus a second hot sample equals 13.266g
Salt hydrate mass:Serving of mevoporating = 1.135g
Mhydrated sample + Mevoporating dish = 25.637g
Mevoporating dish g = 25.637-1.135g=24.502g where Mhydrate sample is equal to 25.637g.
Anhydrous salt mass:Serving of mevoporating = 1.135g
Second heated sample from a mevoporating dish weighs 13,266g
Msalt anhydrous = Msecond heated sample = 13.266-Mevoporating dish g = 13.266-1.135g = 12.131g
Volume of water:Msalt anhydrous = 24.502-12.131g=12.371g where Mwater = Mhydrate sample
12.371 g for Mwater
The sample and the dish have a combined mass of 13.266 g following a second heating session. After the second time, the pupil ends the heat/cool/weigh cycle.
To know more about Water salt visit:-
https://brainly.com/question/5306491
#SPJ4
a 25.0-ml sample of hcl is titrated with 0.350 m koh. 34.6 ml of the base are required to reach the equivalence point. what is the molarity of the acid?
When a 25.0-ml sample of HCl is titrated with 0.350 m KOH. 34.6 ml of the base are required to reach the equivalence point. The concentration of HCl is 0.4844 M
The concentration of a substance is the amount of solute contained in a given volume of solution. Concentration is usually expressed in terms of molarity, expressed as the number of moles of solute in 1 L of solution. Solution concentration is the degree to which a solute is dissolved in a given amount of solvent or solution. An enriched response is a response that contains a very large amount of solute.
Concentration of HCl can be calculate as follows:
Titration is the process of determining the amount of substance A by adding measured increments of substance B, the titrant with which it reacts, until exact chemical equivalence is reached (equivalence point).
The formula (Macid x V acid =Mbase x Vbase ) represents the titration formula in chemistry.
M acid x V acid =Mbase x Vbase
Macid =Mbase x Vbase
V acid
Macid = 0.350 M x 34.6mL
25mL
M HCl = 0.4844 M
Therefore, when a 25.0-ml sample of HCl is titrated with 0.350 m KOH. 34.6 ml of the base are required to reach the equivalence point. The concentration of HCl is 0.4844 M
learn more about concentration here https://brainly.com/question/29109830
#SPJ4
When fission of uranium-235 is initiated by a neutron it can result in many different products. Fill in the correct isotope to complete each reaction.
A barium and a krypton nucleus were found in two incredibly unstable fission pieces. These pieces very instantly split into barium-144 and krypton-89 after releasing three neutrons each.
What are two fissionable substances?The main fissile elements are uranium-235 (0.7 percent of naturally occurring uranium), plutonium-239, and uranium-233, the latter two being synthesised from uranium-238 and thorium-232, respectively, which are fertile elements.
A reactor may be fueled with a variety of materials, although uranium is the most often utilised fuel. Oceans contain uranium, which is widely distributed around the earth and is also rather abundant. You can also utilise other fuels, such thorium and plutonium.
Today, uranium is utilised to generate energy from commercial nuclear reactors and to create isotopes for use in industry and medicine.
learn more about fission refer
https://brainly.com/question/114533
#SPJ4
which of the elements above do you predict will have the highest boiling point? a) fluorine b) chlorine c) bromine d) iodine
Florine (f) has the highest boiling point of the halogen elements
Boiling pointThe boiling point of a compound is influenced by several factors including Mr and intermolecular bonds. The greater the Mr and the intermolecular bonds. The bigger the Mr, the higher the boiling point. For acid halides, the order of boiling points from highest to lowest is:
HF>HI>HBr>HCl
In HF compounds the influence of intermolecular bonds is very strong.
The trend of the melting and boiling points of the halogens can be explained as follows.
The halogen molecule (X2) is nonpolar, thus the attraction between halogen molecules is a dispersion force. As is known, the dispersion force increases in accordance with the increase in molecular mass (Mr). That is why the melting and boiling points of the halogens increase from top to bottom in the periodic table of elements.
Learn more about boiling point here: https://brainly.com/question/25433916#SPJ4
if a 20.0-g sample of caco3 is put into a 10.0-l container and heated to 800.8c, what percentage by mass of the caco3 will react to reach equilibrium?
Kp is the equilibrium constant of the reaction in accordance with the partial pressure of the gas. The mass percentage of calcium carbonate is 2.5%.
What is the mass percentage?
The mass percentage is the ratio of the moles reacted to that of the moles present initially multiplied by 100.
The reaction of calcium carbonate can be shown as,
CaCo3 -----------------> CaO + CO2
The formula for the equilibrium constant is given as,
Kp= Kc[tex](RT)^{n}[/tex]
Here,
n = 1
Gas constant (R) = 8.314 J /mol K
Temperature (T) = 1073 K
Kp = 1.16
= 1.3 x [tex]10^{-4}[/tex]
Substituting values in the above equation:
x =0.005
From the ICE table of the reaction the value of moles of calcium carbonate (x) is calculated as:
Mass% = 0.005/0.2x 100%
2.5%
Therefore, 2.5% is the mass percentage.
Learn more about mass percentage from given link
brainly.com/question/13973333
#SPJ4
Determine the type of each chemical equation describing a precipitation reaction.
CaBr₂ (aq) + Na₂SO₄ (aq) ⟶ 2NaBr (aq) + CaSO₄ (s) is the correct equation.
What is a double displacement reaction?Salt metathesis reactions, also called double displacement reactions, are chemical processes that involve the exchange of bonds between two reacting chemical species, resulting in the formation of products with similar or identical bonding relationships.
Exchange of ions among the reactants in order to form two new compounds is the reason that the reactions are known as double displacement. Double displacement reactions usually result in the formation of products that are precipitates. The double displacement reaction takes the form:
AB + CD → AD + CB
The precipitate is in the solid state and is distinguished from other products so that it can be separated or removed from the reaction
To know more about double displacement reaction visit:
https://brainly.com/question/20038776
#SPJ4
Since the given question is incomplete, the complete question is as follows:
"Determine the type of each chemical equation describing a precipitation reaction. C a 2 + ( a q ) + S O 4 2 − ( a q ) ⟶ C a S O 4 ( s ) Choose... C a B r 2 ( a q ) + N a 2 S O 4 ( a q ) ⟶ 2 N a B r ( a q ) + C a S O 4 ( s ) Choose... C a 2 + ( a q ) + 2 B r − ( a q ) + 2 N a + ( a q ) + S O 4 2 − ( a q ) ⟶ 2 N a + ( a q ) + 2 B r − ( a q ) + C a S O 4 ( s ) Choose..."
A group of students perform an experiment to determine the value of the gas constant. They
forgot to include the vapor pressure of water in their calculations. Will the value of the
experimentally determined gas constant be high, low, or unaffected?
The value of the gas constant will be high due to the increase in gas pressure.
Solution:
According to Ideal Gas Law, PV=nRT
where, P = Gas pressure (in atmospheres), V= Gas Volume (in Liters), n = number of moles of gas sample T= Gas Temperature (in Kelvins), R = Gas Constant.
[tex]\therefore R=\frac{(P\ast V)}{(n\ast T)}[/tex] ....... (1)
P = [tex]P_{atm}[/tex] - [tex]P_{water vapor}[/tex]
where = Atmospheric pressure[tex]P_{water vapor}[/tex] = Partial pressure of water vapor.
If students forgot to include the vapor pressure of water in the calculation of gas constant then the magnitude of pressure due to gas(P) will be more because they are not substracting the Water vapor value from the [tex]P_{atm}[/tex]to get the actual P value.
The value of the gas constant will be high due to the increase in gas pressure.
The ideal gas constant R can be found experimentally by determining the number of moles of gas occupying a given volume of measurement at a known pressure and temperature. This information is obtained in this laboratory by collecting the oxygen produced by the decomposition of potassium chlorate over water. The water level inside the tube should match the water level outside the tube.
Learn more about The vapor pressure here:-https://brainly.com/question/4463307
#SPJ1
which of the following protocols can tls use for key exchange? (select two.) answer kea ecc rsa diffie-hellman ike
Rsa and diffie-hellman are two protocols that tls is capable of using for key exchange.
Are TCP headers encrypted by TLS?TLS encrypts the TCP header and payload. The packet payload stays encrypted the entire way since encryption is done in the protocol on one end system and decryption in the protocol on the other end system.
Which of the following network layer protocols offers services for IP-based network traffic authentication and encryption?Both IPv4 and IPv6 networks use IPsec to authenticate and encrypt data packets. A packet's IP header contains IPsec protocol headers, which specify how a packet's contents are handled, including how it is delivered across a network and routed.
To know more about key exchange visit:-
https://brainly.com/question/4335377
#SPJ4
what is the theoretical yield of iron (55.845 g/mol) when 10.0 g fe2o3 (159.69 g/mol) reacts with excess carbon (12.01 g/mol)?
The theoretical yield of iron (55.845 g/mol) when 10.0 g Fe₂O₃ (159.69 g/mol) reacts with excess carbon (12.01 g/mol) is 6.99 g.
the balance equation is given as :
Fe₂O₃ + 3C ----> 2Fe + 3CO
the mass of Fe₂O₃ = 10 g
molar mass of Fe₂O₃ = 159.69 g / mol
the number of moles of Fe₂O₃ = mass / molar mass
= 10 / 159.69
= 0.062 mol
1 mole of Fe₂O₃ produce 2 mole of Fe
0.062 mol of Fe₂O₃ = 2 × 0.062 = 0.125 mol of Fe
mole of Fe = 0.125 mol
molar mass of Fe = 55.8 g/mol
mass of Fe = 0.125 × 55.5
= 6.99 g
The theoretical yield = 6.99 g
Thus, The theoretical yield of iron (55.845 g/mol) when 10.0 g Fe₂O₃ (159.69 g/mol) reacts with excess carbon (12.01 g/mol) is 6.99 g.
To learn more about theoretical yield here
https://brainly.com/question/1379589
#SPJ4
write the reaction equation that is associated with the lattice energy of the following compounds: a. li2o(s): b. cas(s): c. fecl3(s):
The equation associated with the lattice energy of the compound is: -
Li2O (s)---->2 Li+ (g) + O2- (g)
Lattice energy is defined as the energy required for the conversion of one mole of ionic solid constituents to ionic gaseous constituents. Lattice energy is a measure of the strength of the ionic bonds in an ionic compound.
It provides insight into several properties of ionic solids including their volatility, their solubility, and their hardness.
The lattice energy of an ionic solid cannot be measured directly. However, it can be estimated with the help of the Born-Haber cycle. Generally, this quantity is expressed in terms of kilojoules per mole (kJ/mol)
Lattice energy gives us the idea for the entire reaction and its compounds.
Learn more about lattice energy at,
https://brainly.com/question/2240714
#SPJ4
How do acid and bae interact with water? how doe thi interaction be different for trong acid and weak acid?
Acids give hydrogen ions (H+) to water when they are dissolved in it. The hydrogen atoms that make up hydrogen ions have just one proton left after losing an electron, giving them a positive electrical charge.
What transpires to strong bases and acids in water?Acids and bases dissolve in water and inhibit water dissociation by increasing the concentration of either protons or hydroxide ions, one of the byproducts of water self-ionization.
In an aqueous solution, strong acids and bases are completely ionised. In an aqueous solution, weak acids and bases ionise to a lesser extent. The acidity or basicity of their aqueous solutions can be changed by the salts of weak acids or bases.
Water has the capacity to combine to function as both an acid and a base simultaneously.
learn more about self-ionization refer
https://brainly.com/question/8974149
#SPJ4
Explain how the bonding model for sodium metal would differ from the bonding model for nacl.
Answer:
Explanation:
The bonding in NaCl involves a sodium ion and a chloride ion while the bonding in sodium metal involves sodium ions and a sea of electrons.
NaCl involves sodium and ion and chloride ion held together by an ionic bond. The sodium atom transfers an electron to chlorine atom to yield the chloride ion. This ion pair exists in the compound called sodium chloride.
In sodium metal, the sodium cations interact electrostatically with a sea of electrons in a metallic bond. Hence, while the bonding in sodium chloride involves an ion pair, the bonding in sodium metal involves sodium ions and a sea of electrons.
What is prescription inscription?.
The name of the medicine to be prescribed, its dosage or strength, or the names and dosages of each ingredient to be added to a compound are all listed in the body of such prescription, or inscription.
Which prescription do you refer to?A prescription is a piece of paper around which your doctor orders medication and which you provide to a pharmacist or chemist in order to obtain the medication. You must visit a pharmacy with your prescription. 2. A noun that counts.
Which prescription forms are there?Simple prescriptions are those that are written for only a single component as well as prefabricated product and don't need the pharmacist to compound or admix it. 2. Compound or complicated prescriptions: Those that need compounding and are written for some more than one component.
To know more about prescription visit:
https://brainly.com/question/1447175
#SPJ4
Not all of the c−c bond lengths in naphthalene are equivalent. Based on your resonance structures, how many c−c bonds in the molecule do you expect to be shorter than the others?.
The carbon–carbon bonds in naphthalene are not of the equal length. The bonds C₁–C₂, C₃–C₄, C₅–C₆ and C₇–C₈ are about 1.36 Å in length, whereas the other carbon–carbon bonds are about 1.42 Å long.
Explain resonance structure of naphthalene?Naphthalene is two benzene rings joined together. It has three resonance structures. The double bonds present in the benzene ring are delocalized by intramolecular electron transfer to achieve stability. This is called resonance and these structures can be called resonance structures.
The C-C bond length in naphthalene is not the same. This is because naphthalene has a fused ring structure in which two benzene rings are fused. Single and double bonds are alternating, so the lengths of single and double bonds are different.
To know more about naphthalene visit:
https://brainly.com/question/1626413
#SPJ4
an ideal gas system develops a leak. suppose there are initially 12 mol of gas. if the pressure drops from 148,092 pa to 115,299 pa while the volume and temperature remain unchanged, how many moles of gas escaped from the system?
2.89 moles of gas escaped from the system.
What is ideal gas law ?
The ideal gas law (also called the perfect gas law), the relationship between the pressure P, volume V, and temperature T of a gas in the boundary region between low pressure and high temperature. Gas molecules move almost independently. each other. In such cases, all gases obey an equation of state known as the ideal gas law:
PV = nRT, where n is the number of moles of gas, R is the universal (or complete) gas constant, 8.31446261815324 Joules/ Kelvin/Kelvin (The universal gas constant is defined as Avogadro's number NA multiplied by Boltzmann's constant k.) In the International System of Units, energy is joules, volume is cubic meters (m3), force is newtons (N), and pascals Pressure in (Pa), where 1Pa = 1N/m2. A force of 1 Newton moving a distance of 1 meter does 1 Joule of work. Therefore, the product of both PV and nRT has the dimension of work (energy).
n1=12.11
n2 =15
escaped gas moles = n2-n1=2.89
To learn more about ideal gas law , click the link below ;
https://brainly.com/question/21912477
#SPJ4
A beaker has a mass of 100g. Liquid is poured into the beaker
The mass of the liquid and the beaker is 135 g. What is the
mass of the liquid?
35g
Explanation:Noting the mass of scientific tools such as beakers can help us take the mass of liquids and other samples that cannot be measured on their own.
Mass of the Liquid
To find the mass of the liquid, we have to know the mass of the beaker. Then, we can subtract the mass of the beaker from the mass of the liquid and beaker combined. This will leave the mass of the liquid.
135 - 100 = 35The liquid has a mass of 35g.
Significant Figures and Units
Whenever doing scientific calculations, it is important to include significant figures and units.
Significant figures show the accuracy of a measurement. When, subtracting numbers, round to the smallest number of decimal places. Neither measurement has decimal points, thus the answer also should not have a decimal point. Thus the answer is just 35.
Then, make sure you have units. Since the original measurements are in grams, the answer should also be in grams. So, the final answer is 35 grams.
samples containing equal numbers of moles of h2, n2, o2, and he are placed into separate 1 l containers at the same temperature. assuming each gas behaves ideally, which container has the highest pressure?
They would all exhibit the same pressure. The same number of moles of each gas are put in various containers, thus the gas will take up the same amount of space.
We could see the gases at the same temperature now. Since their volumes are equal, they will all have the same pressure. Now, by performing the following straightforward math, we can better comprehend this:
For H2:
Number of mole (n) = 1 mole
Volume (V) = 22.4L
Temperature (T) = 298K
Gas constant (R) = 0.0821 atm.L/Kmol
Pressure =..?
PV = nRT
Divide both side V
P = nRT /V
P = 1 x 0.0821 x 298 / 22.4
P = 1 atm
Therefore, H2 has a pressure of 1 atm.
For N2:
Number of mole (n) = 1 mole
Volume (V) = 22.4L
Temperature (T) = 298K
Gas constant (R) = 0.0821 atm.L/Kmol
Pressure =..?
PV = nRT
Divide both side V
P = nRT /V
P = 1 x 0.0821 x 298 / 22.4
P = 1 atm
Therefore, N2 has a pressure of 1 atm
For O2:
Number of mole (n) = 1 mole
Volume (V) = 22.4L
Temperature (T) = 298K
Gas constant (R) = 0.0821 atm.L/Kmol
Pressure =..?
PV = nRT
Divide both side V
P = nRT /V
P = 1 x 0.0821 x 298 / 22.4
P = 1 atm
Learn more about pressure:
https://brainly.com/question/25736513
#SPJ4
help bro what does this even mean
The total number of valence electrons in NBr₃ is 26 valence electrons.
The given molecule is nitrogen tribromide , NBr₃
no. of nitrogen atoms in nitrogen tribromide is 1 . nitrogen atomic number is 7 , the number of electrons in the valence shell = 5
total number of valence electron in nitrogen = 1 × 5 electrons = 5 electrons
number of bromine atom in nitrogen tribromide is = 5. bromine atomic number is 35 , number of electrons in the outermost shell = 7
total no. of valence electron in bromine = 3 × 7 = 21
Total number of valence electrons in the molecule, NBr₃
NBr₃ = 5 electrons + 21 electrons = 26 electrons.
Thus, The total number of valence electrons in NBr₃ is 26 valence electrons.
To learn more about valence electrons here
https://brainly.com/question/13993867
#SPJ9
In noncyclic photophosphorylation, electrons flow in a one-way path from water to?.
In noncyclic photophosphorylation, electrons flow in a one way path from water to NADP
Non cyclic photophosphorylation process which result in the movement of the electron in a non cyclic manner for synthesizing ATP molecule using the energy from excited electron provided by photosystem 2 us called as non cyclic photophosphorylation
And during non cyclic photophosphorylation the electron released by P700 are carried by primary acceptors and are finally passed on the NADP and the electron combine with the proton H⁺ which is produced by splitting up of the water molecule and reduced NADP to NADPH₂ and this process require light to be absorbed twice
Know more about electrons
https://brainly.com/question/15039729
#SPJ4
a sample of mol of iron(iii) chloride, , was dissolved in water to give ml of solution. what is the molarity of the solution?
The given question is incomplete and the complete question is
A sample of 0.0606 mol of iron(III) chloride FeCl₃ was dissolved in water to give 35.4 mL of solution. What is the molarity of the solution?
The molarity of the solution is 0.0017 mol/L
The molarity or concentration can be described by using the moles of the solute per liter of known aqueous solution and which is the volume the molarity also is designated as molar concentration
Here given data is
Iron(III) chloride = 0.0606 mol
Water means volume = 35.4 mL
We have to find molarity of the solution = ?
Molarity = moles of solute/volume of solution
Molarity = 0.0606 mol / 35.4 mL
Molarity = 0.0017 mol/L
Know more about iron(iii) chloride
https://brainly.com/question/28289271
#SPJ4
if you wished to dissolve 10g of sucrose sugar in 1l of h2o, which actions would be helpful? heat stirring heat and stirring neither heat nor stirring
Stirring is only required to dissolve sucrose sugar in water.
What is solubility?
Solubility in chemistry refers to a chemical's capacity to dissolve in another substance, the solvent, to produce a solution. The opposite characteristic, insolubility, refers to the solute's incapacity to create a solution. The solvent is often a solid or a liquid, whereas the solute may be a solid, liquid, or gas. Both could be solution-based compounds or pure chemicals. Except in extremely rare circumstances, gases are always miscible in all ratios, and the only way a solid or liquid may be "dissolved" in a gas is by first becoming gaseous.
Temperature, pressure, and the makeup of the solute and solvent (including their pH and the presence of additional dissolved materials) are the key determinants of solubility.
Sugar dissolves in water because energy is given off when the slightly polar sucrose molecules form intermolecular bonds with the polar water molecules. The weak bonds that form between the solute and the solvent compensate for the energy needed to disrupt the structure of both the pure solute and the solvent.Hence, stirring is only required to dissolve sucrose sugar in water.
To know more about dissolution from the given link
https://brainly.com/question/1493341
#SPJ4
23. Use the percent abundance data to calculate the average atomic mass of the following elements. (Show your work!) a. Europium: Percent Abundance = 47.82% Percent Abundance = 52.18% Name: Date: b. Uranium: Percent Abundance = 71.00% Atomic mass=151 Atomic mass = 152 Atomic mass = 234 Period:
Answer: Japenease pls
Explanation:
Select the answer with the correct number of significant figures for each calculation. (6.022 × 1023) × 2.58 = 1.55 × 1024 1.554 × 1024 1.5537 × 1024
The correct answer with the correct number of significant figures is 1.554 * 10²⁴; the correct option is B.
What are significant figures?Significant figures refer to each of the digits of a number that are used to express the given number to the required degree of accuracy, beginning from the first non-zero digit.
Significant figures are used to express the accuracy of a given calculation.
Significant figures are also used in the approximation of numbers.
In determining the number of significant figures to be used for a calculation, the level of accuracy required as well as the highest number of significant figures used in the calculation are considered.
Considering the given calculation:
6.022 × 1023 × 2.58
The highest significant figures of number in the calculation is four significant figures.
Hence, the answer will have four significant figures.
6.022 × 10²³ × 2.58 = 1.554 * 10²⁴
Learn more about significant figures at: https://brainly.com/question/24491627
#SPJ1
Sulfur (S) has an atomic number of 16. What is the ground-state electron configuration of sulfur?
O1s²1p62s²2p6
O1s²2s²2p 3s²3p4
O1s²2s²2p62d6
O 1s²1p61d7
Answer:
It's B
Explanation:
at ground state the atomic number or proton number is equal to the electron number
Normally
the trend for electronic configuration goes as
1s² - 2S² - 2P⁶ -3S² - 3P⁶ -4S² - 3D¹⁰ and so on
(with each number representing a particular energy level and we go from lower to higher energy level)
but for this case we have sulfur
so we go from
1s² - 2S² - 2P⁶ - 3S² - 3P⁴ (I think that was what was supposed to be there not just 2P)
you fill from the lowest energy level to the highest and stop filling when you run out of electrons
since we only had 16 electrons I stopped at 3P⁴
Identify the main group to which x belongs in each ionic compound formula: (a) xf2; (b) mgx; (c) x2so4.
(a) belongs to Group IIA.
(b) belongs to Group XVIA.
(c) belongs to Group IA.
Ionic compounds: what makes them?Ionic compounds are made up of charged particles called ions, which form when an atom (or group of atoms) gains or loses an electron. Cations are positively charged ions, whereas anions have a net negative charge. Covalent or molecular compounds are produced when two elements join together to form molecules and share electrons.
Part (a): X must be a metal for the compound XF2. Since there are two fluorine atoms and fluorine is a monovalent element, X must have a valency of two.
X thus belongs to group 2 as a result.
Part (b): X must not be a metal in the complex MgX. Given that magnesium is divalent and only contains one magnesium atom, X must have a valency of two.
X thus belongs to group 16 as a result.
Part (c): X must be a hydrogen atom or a metal for the compound X2SO4. Given that there are two X atoms and that sulfate is divalent, X must have a single valency.
X thus belongs to group 1 as a result.
To know more about ionic compound visit:
https://brainly.com/question/9597623
#SPJ4
