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Dafna11 [192]
3 years ago
14

Why are enzymes important to cells? They help bring about chemical reactions. They provide structural support. They form the two

layers of membranes. They store large quantities of energy.
Chemistry
2 answers:
julsineya [31]3 years ago
8 0

Answer:They act as a catalyst and help bring about chemical reactions.

Explanation:

topjm [15]3 years ago
4 0
They help bring about chemical reactions. This is because enzymes act as catalysts, lowering the activation energy required for a chemical reaction to initiate. It is in this way that they bring about chemical reactions.
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The reaction of sulfuric acid (H2SO4) with potassium hydroxide (KOH) is described by the equation below. Suppose 0.05 L of KOH w
strojnjashka [21]

From the chemical equation given:

H2SO4+2KOH--->K2SO4+2H2O

the two reactants, H2SO4 and KOH, are in 1:2 stoichiometric ratio.

No. of moles of KOH = 2* no. of moles of H2SO4

=2*0.1*0.033

The concentration of KOH = no. of moles / volume

=2*0.1*0.033/0.05

=0.132M

3 0
3 years ago
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Calculate the number of molecules in a deep breath of air whose volume is 2.15 L at body temperature, 37 ∘C, and a pressure of 7
Zinaida [17]
PV = nRT 
R = 0.0821 L * atm / mol * K 
(ideal gas constant) 

First, convert 735 torr to atm. Divide by 760. 
(1 atm = 760 torr) 

735 torr * 1 atm / 760 torr = 0.967 atm 
Then, convert 37 C to Kelvin. Just add 273. 
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n = PV / RT 
= (0.967)(2.07) / (0.0821)(310) 
= 0.0786 mol 

<span>0.0786 mol * 6.02 * 10^23 molecules / 1 mol = 4.73 * 10^22 molecules </span>
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Using the model, write the chemical formula for an ionic compound that has Mg and Cl.
viktelen [127]

Answer

Mg2Cl2

Mg + mg = mg2

cl + cl = cl2

Mg2 + cl2 =mg2cl2

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2 years ago
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algol13
Chechnya. 345. Gcbjshjkfs
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