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kolezko [41]
3 years ago
5

Rates of chemical reactions within the cell are controlled by substances called _______, or enzymes.

Chemistry
1 answer:
bixtya [17]3 years ago
4 0
Rates of chemical reactions within the cell are controlled by substances called catalysts, or enzymes.
<span>
Enzymes fall into the category of Catalysts. They both speed up the rate of the reaction. </span><span />
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What is the wavelength of a photon with an energy of 3.38 x 10-19J?
kogti [31]

Answer:

C. 588 nm

Explanation:

4 0
3 years ago
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Silicon has 2 isotopes, Silicon-28 with an abundance of 90% and Silicon-30 with an abundance of 10%. Find the AAM for Silicon.
JulsSmile [24]

Answer:

RAM

RAM = (mass \: of \:  ^{28} Si \:  \times \%abundance) + (mass \: of \:  ^{30} Si \:  \times \%abundance) \\ RAM = (28 \times 90\%) + (30 \times 10\%) \\ RAM = 25.2 + 3 \\ RAM = 28.2

5 0
3 years ago
What is the total gas pressure in a sealed flask that contains oxygen at a partial pressure of 0.35 atm and water vapor at a par
Fofino [41]
According to Dalton's Law, in a mixture of non-reacting gasses, thetotal pressure<span> exerted is the sum of the </span>partial pressures<span> of the component gasses. In more complicated circumstances, equilibrium states come into effect, but fortunately for us, </span>oxygen<span> is non-reactive with </span>water vapor<span>.</span>
5 0
4 years ago
what is an empirical formulaWhat is the percent composition by mass of nitrogen in (NH4)2CO3 (gram-formula mass = 96.0 g/mol)?
Margarita [4]

Answer:

Percentage composition = 14.583%

Explanation:

In chemistry, the emprical formular of a compound is the simplest formular a compound can have. It shows the simplest ratio in which the elements are combined in the compound.

Percentage composition by mass of Nitrogen

Nitrogen = 14g/mol

In one mole of the compound;

Mass of Nitrogen = 1 mol * 14g/mol = 14g

Mass of compound = 1 mol * 96.0 g/mol = 96

Percentage composition of Nitrogen = (Mass of Nitrogen /  Mass of compound) * 100

percentage composition = 14/96   * 100

Percentage composition = 0.14583 * 100

Percentage composition = 14.583%

3 0
3 years ago
Why would concentrated hydrochloric acid be a poor choice as the acid catalyst for the formation of cyclohexane by dehydration o
babunello [35]

Answer:

Chlorine ion will attack the carbocation and double bond will not be created

Explanation:

The use of concentrated hydrochloric acid wiill be a poor choice as the acid catalyst for the formation of cyclohexane by dehydration of cyclohexanol because of the following reasons:

1) There will be presence of chlorine ions and they will attack the carbocation to form a single bond.

2) The formation of double bond will not occur in the process.

Therefore, it is a poor choice to use concentrated hydrochloric acid as the acid catalyst for the formation of cyclohexane by dehydration of cyclohexanol.

6 0
4 years ago
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