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In-s [12.5K]
3 years ago
8

BRAINIEST PLS HELPP

Chemistry
1 answer:
Akimi4 [234]3 years ago
4 0

Answer:

0.179kg/m3 hope that helps you out

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How many moles are in 6.4grams of copper​
anzhelika [568]

Answer:

One mole of copper atoms has Avogadro number of copper atoms i.e. 6.022×10

23

 atoms.

Given the mass of Copper is 6.4g

Number of Copper atoms in 6.4g =

molar mass

given mass

​

×Avogadro number

                                                       =

63.55

6.4

​

×6.022×10

23

 copper atoms

                                                       =6.064×10

22

 copper atoms

Explanation:

8 0
3 years ago
Calculate the ph of the solution 0.2M Mg(OH)2
Kipish [7]

Mg(OH)2 is base

Oh = 0.2 x 2 = .4

Poh = - Log (.4)

= .3979

Ph + Poh = 14

Ph = 14 - .3979

= 13.60

6 0
3 years ago
Read 2 more answers
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Dmitry_Shevchenko [17]

Answer:A

Explanation: I think I am right

7 0
3 years ago
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Which statement does not describe an independent variable? *............A......The responding variable........B.........The part
Ymorist [56]

Answer:

The responding variable

Explanation:

The independent variable in a study refers to the factor that is being manipulated in an experiment.

As the independent variable is changed, its effect on the responding (dependent) variable is accessed.

The responding variable changes as the independent variable is manipulated, they do not mean the same thing.

4 0
3 years ago
Which best compares freezing and condensation?
erma4kov [3.2K]
They both involve the release of heat
5 0
3 years ago
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