What is the chemical formula for the molecule modeled?
There are several ways to model a compound. One type
of model is shown.
A)СНО
B)C4H1102
C)C6H12O2
D)C6H90

What Is The Chemical Formula For The Molecule Modeled?There Are Several Ways To Model A Compound. One

Answers

Answer 1

Answer:

Tue answer is B - C4H1102

Answer 2

The chemical formula for the molecule modeled is C₆H₁₂O₂. Therefore, option C is correct.

What is a chemical formula ?

The term chemical formula is defined as the elements that form the compound and the numbers of atoms of each element in the smallest unit of that compound. Water is consist of hydrogen and oxygen in a 2:1 ratio. The chemical formula for water is H₂O.

There are 3 main types of chemical formulas that are empirical formula, molecular formula and structural formula.

Empirical formulas represent the simplest whole-number ratio of atoms in a compound, molecular formulas represent the number of each type of atom in a molecule, and structural formulas represent how the atoms in a molecule are bonded to each other.

In a given molecule modeled C₆H₁₂O₂ we see that, there are six atoms of carbon, 12 atoms of hydrogen and 2 atoms of oxygen.

Thus, option C is correct.

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Related Questions

could some please help me with this? thank you

Answers

Answer:

C

Explanation:

Oxidation occurs at the anode. That means the element's oxidation number should increase. Mg has an oxidation number of 0, but Mg2+ has an oxidation number of 2, showing it was oxidized.

Neutrons are in the nucleus of the atom. A neutron has
a) A positive charge
b) No charge
c) A negative charge
d) Twice as much positive charge as a proton

Answers

Answer: B. (No charge)

Explanation:

Protons have a positive charge, electrons have a negative charge.

Neutrons are neutral and therefore have no change.

Molybdenum metal requires a photon with a minimum frequency of 1.09x1015s-1before it can emit an electron via the photoelectric effect.

a) What is the minimum energy needed to eject an electron?

b)What wavelength of radiation (in nm) will provide a photon of this energy?

c)How many electrons can be freed by a burst of radiation whose total energy is 1.00 μJ, assuming one photon causes one electron to be freed? (μ= micro = 10-6)

d) If molybdenum is irradiated with light of 122nm, what is the maximum kinetic energy of the emitted electrons?

Answers

Answer:

a) 7.22 × 10⁻¹⁹ J; b) 275 nm; c) 1.38× 10¹² electrons; d) 9.1 × 10⁻¹⁹ J

Explanation:

a) Minimum energy to eject photon

E = hf = 6.626× 10⁻³⁴ J·s × 1.09 × 10¹⁵ s⁻¹ = 7.22 × 10⁻¹⁹ J

b) Wavelength required

fλ = c

[tex]\lambda = \dfrac{c}{f } = \dfrac{2.998 \times 10^{8}\text{ m/s}}{1.09 \times 10^{15}\text{/s}} = 2.75 \times 10^{-7} \text{ m} = \textbf{275 nm}[/tex]

c) Electrons required

[tex]\text{No. of electrons} = 1.00 \times 10^{-6}\text{ J} \times \dfrac{\text{1 electron}}{7.22 \times 10^{-19}\text{ J}} = 1.38 \times 10^{12}\text{ electrons}[/tex]

d) Kinetic energy of electrons

a) Energy of photon

[tex]E = hf = \dfrac{\text{hc}}{\lambda} = \dfrac{6.626 \times 10^{-34} \text{ J$\cdot$ s}\times 2.998 \times 10^{8} \text{ m/s}}{122 \times 10^{-9}\text{ m}}= 1.63 \times 10^{-18} \text{ J}[/tex]

b) Maximum kinetic energy

The equation for the photoelectric effect is

hf = φ + KE, where  

φ = the work function of the metal — the minimum energy needed to eject an electron

KE = hf - φ = 1.63× 10⁻¹⁸ J - 7.22× 10⁻¹⁹ J = 9.1 × 10⁻¹⁹ J  

a. The energy of molybdenum to eject electron has been [tex]\rm \bold{7.22\;\times\;10^{-19}}\;J[/tex].

b. The wavelength of the radiation has been 275 nm.

c. The number of electrons present in [tex]\rm 1\;\mu J[/tex] energy has been [tex]\rm \bold{1.38\;\times\;10^1^2}[/tex].

d. The kinetic energy of the emitted electrons as been [tex]\rm \bold{9.1\;\times\;10^-^1^9\;J}[/tex].

The metal emits the energy when it returns from the excited state to ground state.

a. The energy (E) to eject electron has been given by:

[tex]E=h\nu[/tex]

Where, the value of constant, [tex]h=6.626\;\times\;10^{-34}\;\rm J.s[/tex]

The value of frequency has been given, [tex]\nu=\rm 1.09\;\times\;10^{15}\;s^{-1}[/tex]

Substituting the values for energy:

[tex]E=6.626\;\times\;10^{-34}\;\times\;1.09\;\times\;10^{15} \rm J\\\textit E=7.22\;\times\;10^{-19}\;J[/tex]

The energy of molybdenum to eject electron has been [tex]\rm \bold{7.22\;\times\;10^{-19}}\;J[/tex].

b. The wavelength ([tex]\lambda[/tex]) of the radiation has been given by:

[tex]\lambda=\dfrac{c}{\nu}[/tex]

Where, the speed of light, [tex]c=3\;\times\;\rm m/s[/tex]

The frequency has been given as, [tex]\nu=1.09\;\times\;10^{15}\;\rm s^-^1[/tex].

Substituting the values for wavelength:

[tex]\lambda=\dfrac{3\;\times\;10^8}{1.09\;\times\;10^{15}}\;\rm m\\ \lambda=2.75\;\times\;10^-^7\;m\\\lambda=275\;nm[/tex]

The wavelength of the radiation has been 275 nm.

c. The electrons ([tex]e^-[/tex]) burst out can be given as:

[tex]e^-=\dfrac{E}{E'}[/tex]

Where, the energy of radiations, [tex]E=1\;\times\;10^{-6}\;\rm J[/tex]

The energy of each electron has been calculated as, [tex]E'=7.22\;\times\;10^{-19}\;\rm J[/tex]

Substituting the values for number of electrons:

[tex]e^-=\dfrac{1\;\times\;10^-^6}{7.22\;\times\;10^-^1^9} \\e^-=1.38\;\times\;10^1^2[/tex]

The number of electrons present in [tex]\rm 1\;\mu J[/tex] energy has been [tex]\rm \bold{1.38\;\times\;10^1^2}[/tex].

d. The maximum kinetic energy (K.E.) of the radiation has been given as:

[tex]K.E.=\dfrac{hc}{\lambda} -E^'[/tex]

Where, the value of constant, [tex]h=6.626\;\times\;10^{-34}\;\rm J.s[/tex]

The speed of light, [tex]c=3\;\times\;\rm m/s[/tex]

The wavelength of the radiation, [tex]\lambda=122\;\times\;10^-^9\;\rm m[/tex]

Energy of each electron, [tex]E'=7.22\;\times\;10^{-19}\;\rm J[/tex]

Substituting the values, for kinetic energy:

[tex]K.E.=\dfrac{6.626\;\times\;10^{-34}\;\times\;3.0\;\times\;10^8}{122\;\times\;10^-^9}\;-\;7.22\;\times\;10^-^1^9\;\rm J \\\textit {K.E.}=9.1\;\times\;10^{-19}\;J[/tex]

The kinetic energy of the emitted electrons as been [tex]\rm \bold{9.1\;\times\;10^-^1^9\;J}[/tex].

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What is the potential energy of the bowling ball as it sits on top of a building?

Answers

Answer:

Potential energy is the amount of energy calculated from an object's height off the ground.

Explanation:

Potential energy = Mass x Height x Gravity

Well if it isn’t moving, then there wouldn’t be any potential energy. So the answer is 0 :) hope this helped

Classify the following as an element, compound, homogeneous mixture, or heterogeneous
Mixture :
Iron and rust

A. Element
B. Compound
C. Homogenous mixture
D. Heterogenous mixture

Answers

It is a homogenous mixture because when iron and rust mix it’s homogenous.

Answer:

It's an homogeneous Mixture

hehe

Calculate the theoretical yield for the amount of sodium carbonate produced as a result of this chemical reaction. Record your final answer in the above data table.

Calculate the percent yield using your theoretical yield and the amount of sodium carbonate that was actually recovered. Record your final answer in the above data table.

How did your calculated mass of sodium carbonate compare with the actual mass you obtained from the experiment? If the two masses are different, suggest reasons for the difference.

Predict the amount of water and carbon dioxide that was produced as a result of this reaction.


1.

Mass of crucible

5.26 g

2.

Mass of crucible & NaHCO3

8.27 g

3.

Mass of NaHCO3 (2-1)

3.01g

4.

Theoretical Yield of Na2CO3
(Use the amount calculated in #3 as your starting amount)

g

5.

Mass of crucible & Na2CO3

7.13 g

6.

Mass of Na2CO3 – Actual Yield (5-1)

1.87 g

7.

% Yield = actual yield x 100
theoretical yield

%

Answers

Answer:

98.6%

Explanation:

First we put down the equation representing the decomposition of sodium bicarbonate.

2NaHCO3(s) ----> Na2CO3(s) + H2O(l) + CO2(g)

We can see from the data provided that the mass of sodium bicarbonate reacted is 3.01 g.

The number of moles of sodium bicarbonate reacted= mass of sodium bicarbonate/ molar mass of sodium bicarbonate

Molar mass of sodium bicarbonate= 84.007 g/mol

Number of moles of sodium bicarbonate=3.01 g/ 84.007 g/mol

Number of moles of sodium bicarbonate= 0.0358 moles

From the balanced reaction equation,

2 moles of sodium bicarbonate yields 1 mole of sodium carbonate

Hence 0.0358 moles of sodium bicarbonate yields 0.0358/2 = 0.0179 moles of sodium carbonate

Theoretical yield of sodium carbonate = number of moles of sodium carbonate × molar mass of sodium carbonate

Molar mass of sodium carbonate= 105.9888 g/mol

Theoretical yield of sodium carbonate= 0.0179 moles × 105.9888 g/mol

Theoretical yield of sodium carbonate= 1.897 g

Actual yield of sodium carbonate= 1.87 g

%yield of sodium carbonate= 1.87/1.897 ×100

%yield of sodium carbonate= 98.6%

What happens to the motion of the atoms in a spoon after is placed in hot soup?

Answers

Answer:

they move faster

Explanation:

Answer:

They move faster.

Is the answer B? Help

Answers

Answer:

A

Explanation:

Hmm, so we have the following in the diagram

Pt(s)

Cl2(g)

Ag(s)

NaCl(aq)

AgNO3(aq)

Pt 2+, 4+, 6+  Though it states Pt is inert

Cl 2-

Ag 1+

Na 1+

NO3-

Anode definition: the positively charged electrode by which the electrons leave an electrical device.

Electrode definition: a conductor through which electricity enters or leaves an object, substance, or region.

Cations attracted to cathode pick up electrons

Anions attracted to anode release electrodes+

Reduction at Cathode (red cat gain of e)

Oxidation at Anode (ox anode loss of e)

So from the diagram we can see that the charge is being generated through the 2 metal plates.

So the answer is A, the anode material is Pt and the half reaction is 2Cl- = Cl2 + 2e-

Why do you subtract the mass of the solute from the total mass desired when making mass percent calculations?

Answers

I don’t know do you know hahhahahahaha

We can represent the concentration of a material even when we don't know its molecular mass, since mass percentage and parts per million or a billion are just alternative ways of expressing the ratio of the mass of a solute to the mass of the solution.

What is molecular mass ?

The mass of a certain molecule is its molecular mass, which is expressed in daltons. Because they contain various isotopes of an element, multiple molecules of the same substance can have distinct molecular weights.

More solute can be dissolved in a given volume of solution to increase concentration, since doing so increases the mass of the solute. By allowing some of the solvent to evaporate, which reduces the volume of the solution, concentration can be increased.

The amount of a solute that is present in a specific amount of solvent or solution is known as the concentration of a solution. Controlling the stoichiometry of reactants for solution reactions requires knowledge of the solute concentration.

Thus, We can represent the concentration of a material even when we don't know its molecular mass.

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l Active transport
IL Simple diffusion
lll Facilitated diffusion
IV. Osmosis
Which of the above type of transport moves molecules against a concentration gradient?
Your answer:
ll and lV only
l only
ll only

Answers

Answer:

l only

Explanation:

The movement of substances in living cells can either require energy (active) or not (passive) depending on the direction of movement across concentration gradient. Naturally, substances tend to move down a concentration gradient i.e. difference in concentration, which is from a region of high concentration of water to a region of low concentration. This is the passive type of transport, which does not require energy input. Examples are osmosis, simple diffusion and facilitated diffusion.

However, another type of transport exists in which substances move against the concentration gradient i.e. from a less concentrated region to a more concentrated region. In this case, energy input in form of ATP is required for this kind of transport to occur. This transport is referred to as ACTIVE TRANSPORT. Hence, the answer is I only.

Define Acid dissociation constant constant

Answers

Answer:

An acid dissociation constant, K a, (also known as acidity constant, or acid-ionization constant) is a quantitative measure of the strength of an acid in solution. It is the equilibrium constant for a chemical reaction ↽ − − ⇀ − + + known as dissociation in the context of acid–base reactions.

Explanation:

What’s the answer to this?

Answers

Answer : The balanced chemical reaction will be:

[tex]3Ca(s)+2Al(NO_2)_3(aq)\rightarrow 2Al(s)+3Ca(NO_2)_2(aq)[/tex]

Explanation :

Balanced chemical reaction : It is defined as the reaction in which the number of atoms of individual elements present on reactant side must be equal to the product side.

When solid calcium metal reacts with aqueous aluminum nitrate then it gives aqueous calcium nitrate and solid aluminium.

The balanced chemical reaction will be:

[tex]3Ca(s)+2Al(NO_2)_3(aq)\rightarrow 2Al(s)+3Ca(NO_2)_2(aq)[/tex]

2 The precipitate formed when sodium hydroxide reacts with solutions
containing metal ions is the corresponding METAL HYDROXIDE.
a Write word equations and symbol equations including state symbols)
to show how the following solutions react with sodium hydroxide:
magnesium sulfate, MgSO4
ii iron(II) sulfate, FeSO4
ili iron(III) chloride, FeCl3
iv copper(ll) chloride, CuCl2

Answers

Answer:

Explanation:

MgSO4  + 2NaOH -------> Mg(OH)2 + 2NaSO4

CuCl2   +2NaOH -------> Cu (OH)2 + 2Nacl

FeCl3 + 3NaOH  ----> Fe(OH)3  + 3NaCl

based on this can you try for the  FeSO4. similar to first reaction showed above

how can the hemlock woolly upset natural ecosystem?

Answers

Answer:

The HWA attacks eastern hemlock trees in forests and ornamental hemlock trees found in our residential landscaping. It feeds on the hemlock trees' young twigs by sucking the sap, causing their buds to die and needles to dry out and drop from the plant prematurely i think

hope i helped!!

Atoms with a high electronegativity, like oxygen have a strong attractive force
for electrons because
A. they have only a few valence electrons and need a total of eight to
fulfill the octet rule
O B. they're trying to share electrons with other elements of high
electronegativity
O C. opposites attract
O D. they re close to filling their outer shell, fuffilling the octet rule

Answers

Answer:

D. they're close to filling their outer shell, fulfilling the octet rule

Explanation:

:)

For the reaction NH4Cl (s)→NH3 (g)  + HCl (g) at 25°C, ΔH = 176 kJ/moland ΔS = 0.285 kJ/(mol - K).

What is the ΔG, and will this reaction be spontaneous in the forward direction?

169 kJ/mol; no

-91 kJ/mol; yes

91 kJ/mol; no

91 kJ/mol; yes
please answer quick

Answers

Answer:

91kj/mol;no

Explanation:

Took this before I gotchu.

What is the ΔG, and will this reaction be spontaneous in the forward direction? 91 kJ/mol; no

What does ΔG mean in chemistry?

Gibbs is a free number of power converters

In the active and frequent use of the Gibbs free energy change equation, ΔG is calculated from the fixed values ​​that scientists can measure: the enthalpy and entropy changes of the reaction, and the temperature at which the reaction occurs.

What is Delta G measured in?

joules

measured in joules in SI) is the maximum amount of non-expansion work that can be extracted from a closed system (one that can exchange heat and work with its surroundings, but no matter) at fixed temperature and pressure. This maximum can be attained only in a completely reversible process.

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Neutralization Reactions
PREDICT THE PRODUCTS OF THE FOLLOWING REACTIONS
+
HNO3+ Ba(OH)2
+
H3PO4 + Ca(OH)2

Answers

Answer:

2HNO3+ Ba(OH)2 = Ba(NO3)2 + 2H2O

H3PO4 + Ca(OH)2 = Ca3(PO4)2 + 6H2O

Explanation:

2HNO3+ Ba(OH)2 = Ba(NO3)2 + 2H2O

H3PO4 + Ca(OH)2 = Ca3(PO4)2 + 6H2O

H+

O2-

OH-

Ba2+

Ca2+

NO3-

P 5+, 3+, 3-

H2O

PLZ HELP QUICKLY!!!!!!!!
Portfolio: Reflection
Review everything from your portfolio thoughtfully. Answer the following questions carefully and specifically. Use your answers as a guide to prepare for your presentation. Your presentation will focus on your goals and your development and improvements this semester. As you answer these questions, evaluate your strengths as a student. Consider how your growth this semester has prepared you for advancement. Use complete sentences or a paragraph to respond to each item.
WHAT DOES THIS QUESTION MEAN: When you look through your portfolio, what improvements do you notice in your work?
What do they mean by WORK?

Answers

Answer:

they meen like what youve learned or like what youve been tonight....all that is work stuff you did for example school work.

The bridge over the river has a weight limit of 12.65 tons to cross it. The truck weighs 10.89 tons. How many tons is the truck under the weight limit

Answers

Answer:

It is 1.76 tons under the weight limit.

Explanation:

12.65

-10.89

= 1.76

Will Mark Brainly thing please help

Balance this equation. If a coefficient of "1" is required, choose "blank" for that box.


CO + O ₂ → CO ₂

Answers

Answer:

2CO + O ₂ → 2CO ₂

Explanation:

CO + O ₂ → CO ₂

Left Side

C = 1

O = 3

Right Side

C = 1

O = 2

So we'll balance the oxygen first

2CO + O ₂ → 2CO ₂

Left Side

C = 2

O = 4

Right Side

C = 2

O = 4

Ok so balancing the O has also balanced the C

Is Raisin Bran cereal with milk homogeneous

Answers

Answer:

no

Explanation:

Homogeneous means that the substance looks uniform throughout. This means that all of it looks the same (ex. juice or water). Because you can see the different parts of raisin bran cereal with milk it is not homogeneous, it is heterogeneous.

Arrange the following rock particles which occur in soil in the decreasing order of their sizes:
Sand, Clay, Gravel, Silt.Immersive Reader
(1 Point)
Clay>Silt>Sand>Gravel
Silt>Clay>Sand>Gravel
Gravel >Sand>Silt>Clay

Answers

Answer:

Gravel >Sand>Silt>Clay

Explanation:

Sand, Clay, Gravel and Silt

Clay: all particles smaller than 0.002 mm

Silt: all particles within the size range of 0.002-0.05 mm;

Sand: all particles within the size range of  (2.0 mm - 0.05 mm)

Gravel particles are larger than sand, ranging in size from 4.75 mm to 75 mm

Going through the options, the correct option is;

Gravel >Sand>Silt>Clay

What volume of hydrogen will be produced at STP by the reaction of 67.3 g of tin with excess water according to the following reaction?

Answers

Answer:

Sn + 2H2O ==> Sn(OH)2 + 2H2

67.3 g Sn x 1 mol/119 g x 2 mol H2/mol Sn x 22.4 L/mole = answer in liters

Explanation:

Sn + 2H2O ==> Sn(OH)2 + 2H2

67.3 g Sn x 1 mol/119 g x 2 mol H2/mol Sn x 22.4 L/mole = answer in liters

The volume of hydrogen that will be produced from the reaction of 67.3 g of tin with excess water is 12.68 L

How to determine the mole of tin Mass of Sn = 67.3 gMolar mass of Sn = 119 g/mol Mole of Sn =?

Mole = mass / molar mass

Mole of Sn = 67.3 / 119

Mole of Sn = 0.566 mole

How to determine the volume of H₂ produced

Sn + 2H₂O —> Sn(OH)₂ + H₂

From the balanced equation above,

1 mole of Sn reacted to produce 1 mole of H₂.

Therefore,

0.566 mole of Sn will also react to produce 0.566 mole of H₂

Recall

1 mole of H₂ = 22.4 L at STP

Therefore,

0.566 mole of H₂ = 0.566 × 22.4

0.566 mole of H₂ = 12.68 L

Thus, 12.68 L of H₂ were obtained from the reaction.

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The Law of Conservation of Matter
states that matter cannot be created
or
a. enlarged
B. changed
C. broken
D. destroyed

Answers

D. Destroyed
“A fundamental principle of classical physics that matter cannot be created or destroyed in an isolated system.”

Answer:

The law of conservation of matter indicates that matter cannot be created nor destroyed.

So D Destroyed

Please I need this answer quick I will give brainliest

A student decreases the temperature of a 417 cm³ balloon from 278 K to 231 K.

Assuming constant pressure, what should the new volume of the balloon be?


376 cm³

417 cm³

462 cm³

924 cm³

Answers

Answer:

The new volume of the balloon is [tex]346.5\ cm^3[/tex].

Explanation:

Initial volume of a balloon is 417 cm³

The temperature decreases from 278 K to 231 K.

It is required to find the new volume of the balloon if the pressure is constant pressure. At constant pressure, volume is directly proportional to the temperature. So,

[tex]V\propto T[/tex]

i.e.

[tex]\dfrac{V_1}{V_2}=\dfrac{T_1}{T_2}[/tex]

V₂ is final volume.

[tex]V_2=\dfrac{V_1T_2}{T_1}\\\\V_2=\dfrac{417\times 231}{278}\\\\V_2=346.5\ cm^3[/tex]

So, the new volume of the balloon is [tex]346.5\ cm^3[/tex].

Need help please: How many mL of 0.150 Molarity CaBr2 solution must be used to react with 50 mL of 0.115 Molarity AgNO3?

CaBr2 + 2AgNO3 --> Ca(No3)2 + 2AgBr

Answers

Answer:

0.019 L or 19.1 mL

Explanation:

Given the equation of the reaction; we have:

CaBr2 + 2AgNO3 --> Ca(No3)2 + 2AgBr

We must first obtain the number of moles of AgNO3 reacted. This can be obtained from;

Concentration of AgNO3 reacted= 0.115 M

Volume of AgNO3 reacted= 50 ml

Since

Number of moles of AgNO3= concentration of AgNO3 × volume of AgNO3

Number of moles = 0.115 M × 50/1000 = 5.75 ×10^-3 moles

From the reaction equation;

2 moles of AgNO3 reacts with 1 mole of CaBr2

5.75 ×10^-3 moles of AgNO3 reacts with 5.75 ×10^-3 moles × 1 /2 = 2.875×10^-3 moles of CaBr2

Now;

Number of moles of CaBr2= concentration of CaBr2 × volume of CaBr2

Number of moles of CaBr2= 2.875×10^-3 moles

Volume of CaBr2= ????

Concentration of CaBr2= 0.150 M

Hence;

Volume of CaBr2= number of moles of CaBr2/ concentration of CaBr2

Volume of CaBr2= 2.875×10^-3 moles / 0.150

Volume of CaBr2= 0.019 L or 19.1 mL

Answer:

19 mL of CaBr₂ solution should be used to react with AgNO₃

Explanation:

By stoichiometry of the reaction (that is, the relationship between the amount of reagents and products in a chemical reaction) react:

AgNO₃: 2 molesCaBr₂: 1 mole

50 ml of 0.115 M AgNO₃ react. Since molarity is the number of moles of solute per liter of solution, then you can do the following rule of three: if there are 0.115 moles of AgNO₃ in 1 L, in 0.05 L (being 1 L = 1000 mL, then 50 mL = 0.05 L How many moles are there?

[tex]moles of AgNO_{3}=\frac{0.05L*0.115 moles}{1 L}[/tex]

moles of AgNO₃=5.75*10⁻³

Now we can make a new rule of three to calculate the amount of moles necessary for CaBr₂ to react with moles of AgNO₂: if stoichiometry 2 moles of AgNO₃ react with 1 mole of CaBr₂, 5.75*10⁻³ moles of AgNO₃ with how many moles of CaBr₂ react ?

[tex]moles of CaBr_{2} =\frac{5.75*10^{-3}moles of AgNO_{3}*1 mole of CaBr_{2} }{2moles of AgNO_{3}}[/tex]

moles of CaBr₂=2.875*10⁻³ moles

Being 0.150 the molarity of the CaBr₂ compound, you can apply the following rule of three: if by definition of molarity 0.150 moles are in 1 L, 2.875 * 10⁻³ moles in how much volume is it present?

[tex]volume=\frac{2.875*10^{-3} moles*1L}{0.150 moles}[/tex]

volume=0.019 L

Being 1 L = 1000 mL, then 0.019 L = 19 mL

19 mL of CaBr₂ solution should be used to react with AgNO₃

How many kilograms of gasoline fill a 12.0-gal gas tank

Answers

Answer:

29.98kg

Explanation:

12.0 gallons * (3.78541178 liters/gallon) * (1000 mL/liter) * (0.66 g/mL) * (1 kg/1000 g) = 29.98 kg

29.98kg of gasoline fill a 12.0-gal gas tank

what is gasoline ?

gasoline or gas or petrol a mixture of volatile, flammable liquid hydrocarbons which is derived from petroleum and used in many application like fuel in internal-combustion engines, solvent for oils and fats.

It is a by-product of the petroleum industry, used in automobile fuel due to its high energy of combustion and easily mix with air in a carburetor.

Gasoline is produced by distillation by separating the volatile substance, later on other designed process  yield of gasoline from crude oil by splitting large molecules into smaller ones by cracking method.

12.0 gallons * (3.78541178 liters/gallon) * (1000 mL/liter) * (0.66 g/mL) * (1 kg/1000 g) = 29.98 kg of gasoline fill the tank.

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Compounds formed from only non-metals consist of particles called

Answers

Answer:

Compounds formed from non-metals consist of molecules.

Explanation:

The atoms in a molecule are joined together by covalent bonds. These bonds form when atoms share pairs of electrons.

I hope I helped, please correct me if I'm wrong!

Considering the definition of covalent bond and molecules, compounds formed from only non-metals consist of particles called molecules.

But you have to know that the covalent bond is the chemical bond between atoms where electrons are shared, forming a molecule.

Covalent bonds are established between non-metallic elements, such as hydrogen H, oxygen O and chlorine Cl. These elements have many electrons in their outermost level (valence electrons) and have a tendency to gain electrons to acquire the stability of the electronic structure of noble gas.

The shared electron pair is common to the two atoms and holds them together.

In other words, a covalent bond is a type of chemical bond where two atoms of non-metallic elements join to form a molecule, where the atoms share pairs of electrons from their most superficial layer or valence layer to achieve stability in the molecule and thus complying with the octet rule.

In summary, compounds formed from only non-metals consist of particles called molecules.

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A saturated solution of sulfur dioxide is prepared by dissolving SO2(g) in 100. g of water at 10.°C and standard pressure.
Determine the mass of SO2 in this solution.
A.) 15g to 18g
B.) 40g to 43g
C.) 53g to 56g
D.) 6g to 8g

Answers

Answer:

The correct option is;

A.) 15 g to 18 g

Explanation:

The solubility of sulfur dioxide at room temperature = 94 g/L of water forming sulfurous acid as follows;

SO₂ + H₂O ⇄ HSO₃⁻ + H⁺

Which is a partial reversibly association with water molecules

Whereby 1 liter of water weighs 1 kg

9.4 gram of SO₂ will dissolve in 100 g of water at room temperature of 23 to 24°C

The solubility increases as the temperature reduces therefore as shown from the sulfur dioxide solubility chart we have;

At 10°C the solubility of SO₂ (g) is midway between 150 g to 200 g per kg of water

Therefore;

The solubility of SO₂ (g) is between 15 g to 18 g per 100 of water.

The mass of SO2 in the given solution should be an option a 15g to 18g.

Calculation of the mass:

Since the solubility of sulfur dioxide at room temperature = 94 g/L of water forming sulfurous acid likewise:

SO₂ + H₂O ⇄ HSO₃⁻ + H⁺

This represents the partial reversibly association along with water molecules

Here 1 liter of water weighs 1 kg

So we can say that

9.4 gram of SO₂ will dissolve in 100 g of water at room temperature of 23 to 24°C

Due to this, there is an increase in solubility this result in decrease in the temperature

Also, At 10°C the solubility of SO₂ (g) is midway between 150 g to 200 g per kg of water

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hii:) how to do (c)?

Answers

Answer:

C

Explanation:

C shows a mixture of CO2 and H2O, 2 compounds

Answer:

C

Explanation:

C shows a mixture of CO2 and H2O, 2 compounds

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