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tigry1 [53]
3 years ago
8

The law of the conservation of mass must be obeyed in a chemical reaction. what do the atoms do during a reaction that shows the

y obey the conservation of mass?
Chemistry
1 answer:
Rainbow [258]3 years ago
8 0
A balanced equation is a prime example of the law of the conservation of mass as the number of atoms in the reactants is consistent with the number of atoms in the reactants meaning the amount of matter has not changed and no mass has been created or destroyed hence obeying the law.
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What is the molar mass of ch4? I need help
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The molar mass of CH4 is 16 g/mol.
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Which of these statements is correct with respect to pH?
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Out of the statements given, the statement that is correct with respect to pH is " the pH of a solution increases gradually with an increasing basicity." The correct answer is C. 
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How many grams of calcium hydroxide is produced from 9.4 g of calcium chloride in this balanced
Yuliya22 [10]

Answer:

6.27 [gr].

Explanation:

the required mass can be calculated as:

m[Ca(OH)₂]=M[Ca(OH)₂]*m[CaCl₂]/M[CaCl₂], where M - molar mass [gr/mol], m - mass [gr];

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7 0
2 years ago
Isotopes of the same element have the same chemical properties because they have the same number of
Sloan [31]

Answer:

PROTONS

Explanation:

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4 0
3 years ago
1/2-life of pyruvic acid in the presence of aminotransferase enzyme (which converts it to alanine) was found to be 221 s. how lo
Ugo [173]

Answer:

After 1326s, the concentration of pyruvic acid fall to 1/64 of its initial concentration.

Explanation:

The first order kinetics reaction is:

ln [A] = ln [A]₀ - kt

<em>Where [A] is concentration after t time, [A]₀ is intial concentration and k is reaction constant.</em>

To convert half-life to k you must use:

t(1/2) = ln 2 / K

221s = ln 2 / K

K = ln 2 / 221s

<h3>K = 3.1364x10⁻³s⁻¹</h3>

If [A] = 1/64, [A]₀ = 1:

ln [A] = ln [A]₀ - kt

ln (1/64) = ln 1 - 3.1364x10⁻³t

4.1588 = 3.1364x10⁻³s⁻¹t

1326s = t

<h3>After 1326s, the concentration of pyruvic acid fall to 1/64 of its initial concentration.</h3>

<em />

6 0
3 years ago
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