3 years ago

Why do atmospheric carbon dioxide levels fluctuate during the year?

1 answer:

7 0

Answer: The amount of CO2 found in the atmosphere varies over the course of a year. Much of this variation happens because of the role of plants in the carbon cycle

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A gram is one million times larger than a microgram but one billion times smaller than a _______________.

Len [333]

Answer : A hectogram

Explanation:

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3 years ago

A 50.0 mL graduated cylinder has a mass of 65.1 g. When it is filled with an unknown liquid to the 49.3 mL mark, the cylinder an

Delvig [45]

<u>Answer:</u> The density of liquid is $1.12g/cm^3$

<u>Explanation:</u>

We are given:

Mass of cylinder, $m_1$ = 65.1 g

Mass of liquid and cylinder combined, M = 120.5 g

Mass of liquid, $m_2$ = $(M-m_1)=(120.5-65.1)g=55.4g$

To calculate density of a substance, we use the equation:

$\text{Density of substance}=\frac{\text{Mass of substance}}{\text{Volume of substance}}$

We are given:

Mass of liquid = 55.4 g

Volume of liquid = 49.3 mL = $49.3 cm^3$ (Conversion factor: $1mL=1cm^3$ )

Putting values in above equation, we get:

$\text{Density of liquid}=\frac{55.4g}{49.3cm^3}\\\\\text{Density of liquid}=1.12g/cm^3$

Hence, the density of liquid is $1.12g/cm^3$

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3 years ago

What is the original source of energy that is stored in the food that animals eat?

erastova [34]

Since plants turn sunlight into glucose (sugar) that humans and animals eat... the energy we get from our food comes indirectly from the sunlight.

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3 years ago

POINTS AND BRAINIEST ANSWER!!!!

denis23 [38]

Answer:

hydrgen = i think it is 4

oxygen = i think it is 3

Explanation:

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3 years ago

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What are the chemical processes used to make chloroquine?

4vir4ik [10]

You spell Chlorine wrong but the process is called electrolysis

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4 years ago