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2 years ago

What are the roles of hydrogen peroxide, oxygen, hydrogen, and catalase in the following chemical reaction?

2 answers:

5 0

We are given with the equation 2H2O2 --> 02 + 2H2O . In an equation, the right-hand side contains the products while the left-hand side consists of the reactants or substrate. In this case, the enzyme used to enhance the rate of the process is catalase. The answer hence is <span>D. Catalase is an enzyme, O2 and H2O are products, and H2O2 is a substrate.</span>

weqwewe [10]2 years ago

3 0

Answer:

the answer is D

Explanation:

because it is

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Which statement is not true about the field of science? It is based on observations and explanations of the natural world. It is

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Science is constantly changing as new things are always being discovered, therefore "it is consistent and does not need to change with new discoveries" is false.

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3 years ago

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Should I use flex seal to clean a baby

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After 2 hours of research and calculations, the answer is E: Pepsi is bootleg

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2 years ago

Alum is a compound used in a variety of applications including cosmetics, water purification, and as a food additive. It can be

vlabodo [156]

Answer:

The theoretical yield of alum is 19.873 grams and percent yield for this alum synthesis is 45.33%.

Explanation:

Mass of bottle = 10.221 g

Mass of bottle with aluminium pieces = 11.353 g

Mass of aluminium = 11.353 g - 10.221 g = 1.132 g

Mass of alum and bottle = 19.230 g

Mass of alum = 19.230 g - 10.221 g = 9.009 g

Experimental yield of alum = 9.009 g

Theoretical yield of alum:

$2Al(s) +2 KOH(aq) +4H_2SO_4(aq)+10 H_2O(l) \rightarrow 2 KAl(SO_4)_2.12 H_2O(s)+3H_2(g)$

Moles of aluminium = $\frac{1.132 g}{27 g/mol}=0.041926 mol$

According to reaction, 2 moles of aluminum gives 2 moles of alum.

Then 0.041926 mol aluminium will give :

$\frac{2}{2}\times 0.041926 mol=0.041926 mol$ of alum.

Mass of 0.041926 moles of alum:

0.041926 mol × 474 g/mol= 19.873 g

Theoretical yield of alum = 19.873 g

Percentage yield:

$\% Yield =\frac{\text{Experimental yield}}{\text{Theoretical yield}}\times 100$

Percentage yield of the alum:

$\% Yield =\frac{ 9.009 g}{19.873 g}\times 100=45.33\%$

The theoretical yield of alum is 19.873 grams and percent yield for this alum synthesis is 45.33%.

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3 years ago

A gas occupies a volume of 0.2 L at 176 mm Hg. What volume will the gas occupy at 760 mm Hg?

nignag [31]

Answer:

$V_2=0.046L$

Explanation:

Hello,

In this case, we apply the Boyle's law as an inversely proportional relationship allowing us to understand the pressure-volume behavior as shown below:

$P_1V_1=P_2V_2$

In such a way, solving for the final volume V2, we obtain:

$V_2=\frac{P_1V_1}{P_2}=\frac{0.2L*176mmHg}{760mmHg} \\\\V_2=0.046L$

Best regards.

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3 years ago

Which planets have a larger orbital radii, terrestrial planets or gas giants

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The answer is Gas Giants

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2 years ago

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