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3 years ago

Why is your body going through physical and chemical changes?

Chemistry

1 answer:

Thepotemich [5.8K]3 years ago

6 0

Answer:

Physical and chemical changes can occur almost everywhere, even in our bodies! Food must be broken down into a form that our cells can use. When we eat, our bodies physically break down food into small pieces. Our bodies also chemically break down those small pieces of food into tiny organic molecules.

Explanation:

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Water found in animal and human cells is most often found in the (liquid, solid, gas plasma) phase of matter, and oxygen is foun

jarptica [38.1K]

Water found in animal and human cells is most often found in the liquid phase of matter, and oxygen is found in the gas plasma <span>phase of matter. </span>

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4 0

3 years ago

Which of the following are associated with a rock's chemical composition? Select all that apply.

ZanzabumX [31]

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3 years ago

What is the mass of 7 moles of Nitrogen?

Igoryamba

Hey there!

Molar mass of nitrogen is 14.007 g.

We have 7 moles.

Multiply 7 by 14.007.

7 x 14.007 = 98.049

7 moles of nitrogen has a mass of 98.049 grams.

Hope this helps!

8 0

3 years ago

What is an example of a neutral ion.

VARVARA [1.3K]

A neural sodium ion.

4 0

3 years ago

How many grams of NO are required to produce 145 g of N2 in the following reaction?

V125BC [204]

Answer:

b. 186 g

Explanation:

Step 1: Write the balanced equation.

4 NH₃(g) + 6 NO(g) → 5 N₂(g) + 6 H₂O(l)

Step 2: Calculate the moles corresponding to 145 g of N₂

The molar mass of nitrogen is 28.01 g/mol.

$145g \times \frac{1mol}{28.01 g} =5.18 mol$

Step 3: Calculate the moles of NO required to produce 5.18 moles of N₂

The molar ratio of NO to N₂ is 6:5.

$5.18molN_2 \times \frac{6molNO}{5molN_2} = 6.22molNO$

Step 4: Calculate the mass corresponding to 6.22 moles of NO

The molar mass of NO is 30.01 g/mol.

$6.22mol \times \frac{30.01g}{mol} =186 g$

4 0

3 years ago