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Mg(s) + 2HCl(aq) mc019-1.jpg H2(g) + MgCl2(aq)What is the most likely effect of an increase in pressure on this reaction?



The reactant surface area increases.

The reaction rate decreases.

The reaction is not affected at all.

The reaction stops completely.

Answers

Answer 1
Answer: The increase in pressure alters the equilibrium of the reaction. In this case, the number of gaseous products in the reactant side is zero while the product side contains 1 gaseous product. The increase in pressure favors the side with less number of gaseous molecules which is the reactant side. Hence, the reaction rate decreases. 
Answer 2
Answer:

Answer:

The increase in pressure alters the equilibrium of the reaction. In this case, the number of gaseous products in the reactant side is zero while the product side contains 1 gaseous product. The increase in pressure favors the side with less number of gaseous molecules which is the reactant side. Hence, the reaction rate decreases.

Explanation:

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In 1 kilogram of pure water, the mass of hydrogen atoms is approximately 112 grams, or 0.112 kilograms. What is the energy equivalent of this mass in joules?

Answers

Using Einstein’s famous equation, E = mc^2

Given mass, m = 0.112 kg and knowing c = 3.0 x 10^8 m/s, energy E can be determined

E = (0.112 kg)(3.0 x 10^8 m/s)^2

 = 1.008 x 10^16 J

Hope this helps

 

 

Answer:

1.008* 10^(16) Joules is the energy equivalent of this .

Explanation:

Mass of hydrogen atoms in 1 kg of water = 112 g= 0.112 kg

Mass and energy related together and that expression was given by the famous scientist named Albert Einstein:

E=mc^2

E = Energy related to mass m

c = Speed of the light

m = 0.112 kg , c = 3* 10^8 m/s

E=0.112 kg* (3* 10^8)^2=1.008* 10^(16) J

1.008* 10^(16) Joules is the energy equivalent of this .

Describe the relationship between Avogadro's number and one mole of any substance.

Answers

They are the same thing!
avogadros number is 6.022 x10^23... this is the same as one mole. so if you have 16g of zinc you divide by avogadros number to fine one mole of zinc.

Persamaan kimia bagi magnesium

Answers

English please ..I don't understand this.

Which of the following is true about bases?a. They help to build up cells.
b. They release hydroxide ions in solution.
c. They tend to decrease the pH of a solution.
d. They have a sharp or sour taste. explain

Answers

B, the release hydroxide ions in solution

What climates make up the largest climatic zone on earth

Answers

Polar zone, temperature zone and tropical zone
I looked it up and it should be polar zone,tropical zone, and temerate zone

Which type of change must occur to form a compound? (1) chemical (3) nuclear(2) physical (4) phase?

Answers

The correct answer is (1) Chemical

Explanation:

A compound is the result of two or more chemical elements that bond to form new substances; for example, water is a compound because this contains two hydrogen atoms bonded to one oxygen atom. Moreover, compounds are the result of a chemical change that occurs as two or more substances interact in a chemical reaction, and this leads to the formation of bonds between the substances or the formation of compounds.

On the other hand, a physical change involves only a change in the state of the matter and a nuclear change leads to a change in the atom rather. Thus, the type of change that must occur to form a compound is a chemical change.
Let's go through each of the answers and think about why they work or don't work. 

Chemical forms compounds. 

Nuclear changes the element completely. We're going to use the sun as an example. The sun is in a state of plasma. It's really hot and has all these particles hitting into each other. The nucleus' of atoms are hitting into each other forming larger elements. It's real crazy. Nuclear is not correct. 

Physical cannot form a compound. 
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