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Vera_Pavlovna [14]
2 years ago
12

An enzyme acts to Group of answer choices raise the activation energy needed to start the reaction. lower the activation energy

needed to start the reaction. convert the activation energy into potential energy. convert the activation energy into kinetic energy. stop a chemical reaction.
Chemistry
1 answer:
Vesna [10]2 years ago
5 0

Answer:

lower the activation energy needed to start the reaction.

Explanation:

The activation energy is defined as the energy barrier that stands between reactants and products.

An enzyme is a biological catalyst. Catalysts are known to lower the activation energy of a reaction.

Hence, a catalyst lowers the activation energy of the reaction. The lower the activation energy of a reaction, the faster the reaction is expected to be.

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Which condition is a result of shaken baby syndrome?
Zinaida [17]

I would say A or C because the other 2 are decided before a baby leaves the womb

8 0
2 years ago
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A gas mixture is made up of kr (21.7 g), o2 (7.18 g), and co2 (14.8 g). the mixture has a volume of 23.1 l at 59 °c. calculate t
Scilla [17]

Answer:- partial pressure of Kr = 0.306 atm, partial pressure of oxygen = 0.264 atm and partial pressure of carbon dioxide = 0.396 atm

Total pressure is 0.966 atm

Solution:- moles of Kr = 21.7 g x (1mol/83.8g) = 0.259 mol

moles of oxygen = 7.18 g x (1mol/32g) = 0.224 mol

moles of carbon dioxide = 14.8 g x (1mol/44g) = 0.336 mol

Volume of container = 23.1 L and the temperature is 59 + 273 = 332 K

From ideal gas law equation, P = nRT/V

partial pressure of Kr = (0.259 x 0.0821 x 332).23.1 = 0.306 atm

partial pressure of oxygen = (0.224 x 0.0821 x 332)/23.1 = 0.264 atm

partial pressure of carbon dioxide = (0.336 x 0.0821 x 332)/23.1 = 0.396 atm

Total pressure of the gas mixture = 0.306 atm + 0.264 atm + 0.396 atm = 0.966 atm

4 0
3 years ago
Given the incomplete equation 4Al + 3O2 → 2X, what compound is X?
Sever21 [200]
<h3><u>Answer</u>;</h3>

B) Al2O3

<h3><u>Explanation;</u></h3>

Aluminium reacts with oxygen to form aluminium oxide.

The chemical reaction for the reaction between Aluminium and Oxygen is;

4Al+ 3O₂→ 2Al₂O₃

Therefore;

Compound X is Aluminium oxide (Al₂O₃)

8 0
3 years ago
Read 2 more answers
Simple carbohydrates, also referred to as sugars, include monosaccharides and disaccharides. Monosaccharides consist of a single
erma4kov [3.2K]

Answer:

C is correct

Explanation:

A is wrong.

Lactose is a double sugar or disaccharide.

B. is wrong.

Sucrose is a double sugar as well as maltose . A double sugar is expected to contain 2 simple sugars. Sucrose contain glucose and fructose. Maltose itself is a double sugar.

C.is right

The three are simple sugar and they contain the exact atoms and numbers. In fact they are all isomers and essentially would have the same molecular formula. While glucose and fructose are functional group isomers, glucose and galactose are diastereoisomers.

D. is wrong.

Carbohydrates do not contain nitrogen

E. is wrong.

They are not simple carbohydrates but are polymers.

4 0
2 years ago
For the reaction H2O(g) + Cl2O(g) → 2HCIO(9), you know S rxn and Sosys and S° of HCIO(g) and of H2O(g). Write an expression that
Liono4ka [1.6K]

The expression that can be used to determine Cl2O(g) is ;

S_{cl_{2}o(g) } ^{o} = 2S_{HCIO(g)} ^{o} - S_{H_{2}O(g) }^{o} - \beta S_{rxn} ^{o}

<h3>Determine an expression that can be used to determine Cl2O(g)</h3>

The general expression for ΔS°rxn of a chemical reaction

ΔS°rxn = ∑mS°products - ∑nS°reactants

where ; m and n = stoichiometry coefficients

Considering the given reaction : H₂O(g) + Cl₂O(g) → 2HCIO (g)  

\betaS°rxn  = 2S_{HCIO(g)} ^{o} - S_{H_{2}O(g) } ^{o} - S_{Cl_{2}O } ^{o} ------- ( 2 )

Rearranging the equation above

S_{cl_{2}o(g) } ^{o} = 2S_{HCIO(g)} ^{o} - S_{H_{2}O(g) }^{o} - \beta S_{rxn} ^{o}

Hence we can conclude that The expression that can be used to determine Cl2O(g) is ;

S_{cl_{2}o(g) } ^{o} = 2S_{HCIO(g)} ^{o} - S_{H_{2}O(g) }^{o} - \beta S_{rxn} ^{o}

Learn more about stoichiometry : brainly.com/question/16060223

3 0
2 years ago
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