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3 years ago

How does an increase in concentration affect the rate of a reaction?

Chemistry

1 answer:

Nikitich [7]3 years ago

7 0

Answer:

Option (a) it speeds the reaction up

Explanation:

Increasing the concentration of a reactants speed up the reaction because it leads to effective collisions which in turn speeds up the reaction

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The crystal size of an igneous rock is described as its _____.

Mila [183]

Answer:

The crystal size of an igneous rock is described as its texture.

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3 years ago

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The distance between a carbon atom and an oxygen atom in the co molecule is how far from the carbon atom is the center of mass o

DENIUS [597]

The distance between a carbon atom and an oxygen atom in the co molecule is 0.63

<h3>What is the distance?</h3>

Distance is the measurement of the farness of two objects from each other.

The distance between the molecules can be calculated by the given formula

$xcm = m_1+m_2m_1\times 1+m_2 \times 2$

Putting the values in the equation

$xcm = 12+1612 \times 0+16 \times 1.1 = 0.63 A^\circ$

Thus, the distance between a carbon atom and an oxygen atom in the co molecule is 0.63

Learn more about distance

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2 years ago

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Which one of the following represents a<br> chemical change?

11111nata11111 [884]

We need options... sorry

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3 years ago

Why are complex carbohydrates, such as starches, considered long-term energy sources? A. The human body can break down complex c

PilotLPTM [1.2K]

Answer:

A. The human body can break down complex carbohydrates into sugar molecules that provide energy.

Explanation:

Strings of glucose, form complex carbohydrates such as starch and glycogen. Glycogen which is a stored form of glucose in humans is a source of long-term energy, and a complex carbohydrate because glycogen can be converted to glucose-1-phosphate which can enter the glycolytic cycle to generate Adenosine triphosphate which is a unit of energy.

This stored form of energy can be slowly broken down to release energy when needed by the body. During exercise, for instance, glycogen can slowly release ATP needed for energy.

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3 years ago

A tank contains an ideal gas mixture of 5 g of O2 and 8 g of CO2 at 160kPa and specified temperature. If O2 were separated from

erica [24]

Answer:

74 or 74 kPa.

Explanation:

Hello,

In this case, based on the initial information, it is seen that the oxygen and the carbon dioxide form the mixture at 160 kPa, thus, by isolating the oxygen, its pressure will be equal to its initial partial pressure because it gets isolated, hence, we compute its molar fraction as:

$x_{O_2}=\frac{5gO_2*\frac{1molO_2}{32gO_2} }{5gO_2*\frac{1molO_2}{32gO_2} +8gCO_2*\frac{1molCO_2}{44gCO_2} } =0.46$

Therefore, its initial pressure turns out:

$p_{O_2}=160kPa*0.46=73.9kPa$

Such pressure will be the oxygen's pressure once it is isolated. Finally, considering the request, the answer will be just 74 (by rounding to the nearest integer and without units).

Best regards.

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3 years ago