MgCl2 product in the reaction forms a precipitate because it is solid an insoluble salt and not dissolve in solution and precipitate on the bottom surface of the solution.
What is precipitation reaction?The chemical reaction in which two ionic bond combine to form an insoluble salt in a aqueous solution is called precipitation reaction.
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how to clean garbage disposal with baking soda and vinegar
How many mL of 0.100 M NaCl would be required to make a 0.0365 M solution of NaCl when diluted to 150.0 mL with water?
Answer:
54.75 mL
Explanation:
First calculate the number of moles of NaCl in the 150mL solution of NaCl
0.0365 moles should be present on 1000cm3 or 1dm3 of water.
1L = 1 dm3
1 mL = 1 / 1000 dm3
150 mL = 150/1000 dm3 = 0.15 dm3
If x moles are present in 0.15 dm3,
x/ 0.15 = 0.0365
We get x= 0.0365 × 0.15 mol
Now x amount of moles should be taken from the initial 0.100 M NaCl solution
So 0.1 moldm-3 = 0.0365× 0.15 mol / V
we get V = 0.05475 dm3
V= 0.05475 L
V= 54.75 mL
Choose the statement that is TRUE. Question 26 options: Outer electrons efficiently shield one another from nuclear charge. All of the answers are true Valence electrons are most difficult of all electrons to remove. Core electrons effectively shield outer electrons from nuclear charge. Core electrons are the easiest of all electrons to remove.
The statement which is true is Core electrons effectively shield outer
electrons from nuclear charge.
Core electrons are those which are in close proximity with the nucleus. The
core electrons repel the outer electrons farther away from the nucleus to
shield it from nuclear charge.
The valence electrons are usually found in the outermost part of the shell
and they are the easiest to remove due to the fact that they have to achieve
a stable octet configuration which makes them easily removed during
chemical reactions.
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Answer: core electrons effectively shield outer electrons from nuclear charge
Explanation:
Valence electrons are electrons in the ? of an atom.
Answer:
Valence electrons are the outermost of electrons.
Explanation:
valence electrons are the outermost electrons of an atom located in the shell/ orbit
What is the powerhouse of the cell?
Answer:
Mitochondria
Explanation:
Mitochondria is the powerhouse of the cell, convert sustenance into energy, fueling the cell's activities. In addition to power, mitochondria also produce reactive oxygen
List the 4 main components of air in their molecular form.
Answer:
Air is made up of 78.09% nitrogen, 20.95% oxygen, 0.93% argon, 0.04% carbon dioxide, and other gases in meager amounts.
elements are organized on the periodic table according to
Answer:
atomic number
Explanation:
The periodic table is a table that lists all of the chemical elements in order of atomic number, starting with hydrogen and ending with oganesson. The number of protons in the nucleus of an atom of a certain element is its atomic number.
Have a good day :)
8. Why are we focusing on high levels of ozone in the troposphere in this lab while in Lab 2 (Stratospheric Ozone) we focused on low concentrations of ozone in the stratosphere?
Answer:
f4
Explanation:
your welcome.
Could someone take a picture of an acid or a base and label them
Answer:
Ok
Explanation:
c. 0.0023 moles of CO2
Answer:
0.1gram
Explanation:
mass = no of moles × molar mass
Use the periodic table to identify the number of valence electrons available for bonding for each of the following elements.
C :
H:
N:
O:
P:
CI:
Answer:
Look at the screenshot below.
Those are your answers!
Good Luck.
Explanation:
The number of valence electrons for neutral atoms is the same as the number of the atom's main group.A periodic table element's column can be used to determine its main group number.For instance, carbon, which belongs to group 4, has four valence electrons.
Use the periodic table to identify the number of valence electrons available for bonding for each of the following elements?
This rule states that each group of elements has one valence electron, two valence electrons in group 2, three valence electrons in group 13, four valence electrons in group 14, and so on. C : Six electrons make up the atom of carbon: four valence (outermost shell) electrons in the 2s and 2p orbitals, and two inner shell (core) electrons in the 1s orbital. H : As the initial element, hydrogen has an electron configuration of 1s1.Its valence shell only contains one electron.The outermost electrons or those with the highest energy level are called valence electrons. N : The periodic table's Group 15 is headed by nitrogen, which has either 3 or 5 valence electrons. O : On the periodic table, column 6 contains oxygen (symbol O).Its valence electrons number six.To obtain an octet, two bonds must be created. Ci : If chlorine removes one of its seven valence electrons, it will have eight (an octet).When chlorine gains one electron, its electron configuration resembles that of argon.If chlorine had given up all seven of its valence electrons and sodium had taken them, the octet rule would have been met.To learn more about periodic table refer
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Which one is better!!!!!!!!!????????
Answer:
Both Iron Man and Spider-Man are quite powerful in the comic books, but we think that Spider-Man would be able to defeat Iron Man. Despite his powers, Iron Man is still just a man in a suit, while Spider-Man has actual superpowers and we think they could easily cancel all of Iron Man's advantages
Explanation:
HURRY for a BRAINLIST
Answer:
B
Explanation:
Answer:
answers
B
Explanation:
Explicaciónexplicacaca
Help Please!
Fluorine - 19
Atomic number- 9
Atomic mass - 19
Answer:
Number of protons is 9
Number of electrons is 9
Number of neutrons is 10
Explanation:
Atomic number refers to the number of protons or electrons in an atom, so the electrons and protons are 9.
Atomic mass is the sum of the number of protons and neutrons.
Therefore, there are 10 neutrons in the atom's nucleus
where electrons are likely to be found as they travel around the nucleus
Answer:
The electrons are most likely to be found in An orbital
What are the diffrent types of chemical reactions?
A chemical reaction is a process that can lead to a change of state, the outcome of a chemical reaction can ultimately lead to the formation of a new substance.
Types of Chemical ReactionsSynthesis reactionsDecomposition reactionsSingle-replacement reactionsDouble-replacement reactionsCombustion reactions.Learn more about chemical reaction here:
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Help me please, I don't get it. Please & thank you, xoxo !
Sorry I accidentally touched it
How many moles of methane are produced when 25. 1 moles of carbon dioxide gas react with excess hydrogen gas.
Answer:
25.1 moles
Hence it can be seen that when 25.1 moles of carbon dioxide gas react with excess hydrogen gas, 25.1 moles of methane gas are produced.
Someboyd please helppppppp!!!
Sodium: Na+
Iron (II): Fe2+
Iron (III): Fe3+
Titanium (IV): Ti4+
Vanadium (V): V5+
Ammonium: NH4+
I hope this helps! :)
If 5.3 g of gallium reactions with 5.3 g of oxygen according to the following reaction, how many grams of gallium oxide can be produced?
Word equation:
Formula equation:
(Must be balanced!)
Answer:
can you help mine please
How many molecules of chlorine are needed to react with 56.Og of iron to form Iron (III) chloride (FeCl3)?
PLEASE ANSWER NEED HELP!!!!!!!! PLEASE THE CORRECT ANSWER!!!!!!
Ivan has decided that he is going to work on having a more positive body image. What result should he hope for?
A.
He should feel good about his body and accept any flaws.
B.
He should look for compliments from friends and family about his body.
C.
He should love everything about his body and think he is very attractive.
D.
He should be happy with himself after following a strict diet and exercise routine.
PLEASE NO LINKS
Answer:
D
Explanation:
Hope it helps
The result he hope for he should be happy with himself after following a strict diet and exercise routine.
What is fitness?Fitness is defined as to be able to go about one's everyday activities without difficulty, without getting exhausted, and with enough energy to spare for leisure. Body composition, flexibility, muscular strength, muscular endurance, and cardiorespiratory endurance are the five facets of physical fitness. Physical activity can strengthen your bones and muscles, help you maintain a healthy weight, increase your ability to carry out daily tasks, and improve your cognitive health.
Exercise is defined as a bodily action that maintains or improves physical health and wellness overall. Exercise science is a field that investigates movement as well as the corresponding functional reactions and adaptations.
Thus, the result he hope for he should be happy with himself after following a strict diet and exercise routine.
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Which image represents a homogeneous mixture?
Which image represents a heterogeneous mixture?
Imagine A represents a heterogeneous mixture as it is a mixture composition that does not remain the same throughout the mixture whereas Imagine B represents a homogeneous mixture as it does not have any change or irregularity.
What are Homogenous and Heterogenous mixtures?A homogeneous mixture is defined as having a fairly uniform form and composition, so many homogeneous mixtures are referred to as solutions whereas heterogeneous mixtures are defined as separate substances or phases. The three states or states of matter are gas, liquid and solid.
Some examples of mixtures that include mixtures of sand and water, mixtures of sugar and salt, and mixtures of lime juice and water.
In homogenous solution, particles are distributed uniformly and have uniform composition while in heterogenous solution, particles are distributed non-uniformly and have non-uniform composition
Thus, Imagine A represents a heterogeneous mixture as it is a mixture composition that does not remain the same throughout the mixture whereas Imagine B represents a homogeneous mixture as it does not have any change or irregularity.
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A container holds 2.0 liters of a gas at 5.0 atmospheres of pressure. If both the temperature and the amount of gas are kept constant while the volume is doubled, what is the new pressure of the gas A 0.5 L B 1.0L C 4.0 L D 8.OL
The new (final) pressure of the sample of gas is equal to 2.5 Liters.
Given the following data:
Initial volume = 2.0 LitersFinal volume = 4.0 LitersInitial pressure = 5.0 atm.Note: The initial volume was doubled.
To determine the new (final) pressure of the sample of gas, we would apply Boyle's law:
Mathematically, Boyle's law is given by the formula;
[tex]PV = k\\\\P_1V_1 = P_2V_2[/tex]
Where;
[tex]P_1[/tex] is the initial pressure.[tex]P_2[/tex] is the new (final) pressure.[tex]V_1[/tex] is the initial volume.[tex]V_2[/tex] is the final volume.Making [tex]P_2[/tex] the subject of formula, we have:
[tex]P_2 =\frac{P_1V_1}{V_2}[/tex]
Substituting the given parameters into the formula, we have;
[tex]P_2 = \frac{5.0 \times 2.0}{4.0} \\\\P_2 = \frac{10}{4.0}[/tex]
New volume = 2.5 Liters
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Here’s the second part to my science
Answer:
"powerhouse"- mitochondria
"stores spare parts"- vacuole
"surrounds the nucleus"- nuclear membrane
"controls the cell"- nucleus
"pathways"- endoplasmic reticulum
"inner layer"- cell membrane
"outer plant covering"- cell wall
"fills up the cell"- ctyoplasm
"collects light"- chloroplasts
"packages proteins"- golgi
"holds info"-chromosomes
"makes protein"-ribosomes
please mark me brainliest if you like my answer <3
The energy released by a nuclear fusion reaction is produced when
1. energy is converted to mass
2. mass is converted to energy
3. heat is converted to temperature
4. temperature is converted to heat
Answer:
2
Explanation:
energy produced in nuclear fusion or even fission is due to mass defect and it can be calculated by Einstein equation e=mc2
The statement, that describes energy released by a nuclear fusion reaction is produced is "mass is converted to energy."
What is nuclear fusion?Nuclear fusion is the process by which two light atomic nuclei merge to produce a single heavier one, releasing huge quantities of energy in the process.
A fusion reaction occurs when two light nuclei combine to form a single heavy nucleus. Because the overall mass of the resulting single nucleus is smaller than the mass of the two initial nuclei, the process releases energy.
That is, nuclear energy refers to the energy released as a result of mass loss during the nuclear fusion processes. Both of these processes transform mass loss into energy in accordance with Einstein's mass-energy ratio, E = [tex]mc^{2}[/tex]. As a result of the fusion reaction, mass is destroyed and energy is released.
Hence, the correct answer is 2.
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how many repeat units are required to make a nylon polymer with a formula weight of 15,000 amu?
This problem is giving information about a nylon polymer whose molar mass is 15,000 amu (atomic mass units).
The first subject of matter here, is to recall the monomeric molecular formula of nylon which is C₁₂H₂₂N₂O₂, and the definition of monomer (basic molecule able to react and form a polymer) and polymer (assembling of monomers).
Next, we calculate the molar mass of the monomer of nylon:
[tex]12*12.01+22*1.01+2*14.01+2*16.00=226.31amu[/tex]
Finally, the number of units is calculated by dividing the molar mass of the polymer and the monomers:
[tex]n=\frac{15000}{226.31} =66.2[/tex]
Which is about 66 monomers.
Learn more:
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66 monomers
Explanation:
A mixture of molten salts contains the following ions: Mg2 , Cu2 ,F-, Cl-, Br-. Which ion will be oxidized first, when the mixture undergoes electrolysis.
When the mixture of ions undergoes electrolysis, Br- is most easily oxidized.
Electrolysis refers to the decomposition of a solution by the passage of direct current through it. During electrolysis, a specie is oxidized and another specie is reduced since it is a redox reaction.
Among all the ions; Mg2+ , Cu2+ ,F-, Cl-, Br-, the ion that is most easily oxidized in Br- which is oxidized to Br2.
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For the reaction, calculate how many moles of the product form when 0.046 mol of O2 completely reacts.
Assume that there is more than enough of the other reactant.
2Ca(s)+O2(g)→2CaO(s)
Express your answer using two significant figures.
Answer: 0.023 moles of CaO.
Explanation:
The balanced equation tells us that we'll get 2 moles of CaO for every one mole of O2. Since we have 0.046 moles of O2, we'll get 0.023 moles of CaO. (2 sig figs)
How do erosions affect land forms?
Erosion is the only cause of land form changes.
Land forms can be created by erosion.
Erosion can prevent land forms from being built.
Land forms can only be created through erosions.
Answer:
the anwser is landforms can be created by erosion
Explanation:
how long does vacuum sealed raw meat last in the freezer?
Answer:
Frozen Meats – Frozen raw meats that are properly vacuum sealed can be stored in the freezer from 1-3 years depending on the type of meat. However, raw meat that is not vacuum sealed will only last 1-12 months depending on the meat.
Explanation:
hop this helps
Answer: Six months or three years
Explanation: Frozen meats, poultry, and fish can last in the freezer for up to six months and when they are vacuum sealed, frozen meats can stay fresh and free from freezer burn for up to 3 years.
