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g100num [7]
3 years ago
6

1. Mixing is a physical change. True or false

Chemistry
2 answers:
Arada [10]3 years ago
6 0

Answer:

false it is a chemical change

Hitman42 [59]3 years ago
5 0

Answer:

true

Explanation:

if u mix it can explode which is a chemical reaction

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Convert 8.50 moles Ca to atoms
Wewaii [24]

8.50 moles is equal to 5.1187×10²⁴ atoms of Ca.

<u>Explanation:</u>

We have to multiply the moles of Ca by the Avogadro's number:

= 6.022×10²³

So the number of atoms:

= 8.5 moles × 6.022×10²³atoms / mol

= 5.1187×10²⁴ atoms

Hence the 8.50 moles is equal to 5.1187×10²⁴ atoms of Ca.

4 0
3 years ago
Where does the chemical energy to produce ATP come from
aleksandrvk [35]

Answer:

glucose

Explanation:

Chemical energy is stored in the bonds that hold the molecule together. ADP can be recycled into ATP when more energy becomes available. The energy to make ATP comes from glucose. Cells convert glucose to ATP in a process called cellular respiration.

7 0
2 years ago
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Explain whether areas B and D show the same season.
torisob [31]
They do not show the same season. one is faced a different part of the sun
4 0
3 years ago
suppose you wanted to compare two different stain removers to learn which one was better at removing food stains from clothing.
Dovator [93]

Answer:

The amount/type of stain

Explanation:

You would want to ensure that the stain was the same in both samples.  

8 0
1 year ago
the student records the concentration of the stock solution of H2O2 to be 0.950 M. The student proceeds to prepare the reaction
lana [24]

Answer:

0.0400M of KI

Explanation:

Molarity is an unit of concentration defined as the ratio between moles of solute and liters of solution.

When you add 10.0 mL of 0.10M KI and 15.0mL, total volume is:

25.0mL = <em>0.025L of solution</em>

<em />

And moles of KI are:

0.0100L × 0.10M = <em>0.00100 moles of KI</em>

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Thus, molarity is:

0.00100 moles / 0.025L = <em>0.0400M of KI</em>

6 0
3 years ago
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