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emmainna [20.7K]
3 years ago
5

What is the ph of a solution that is 0.100 m hio3and 0.100 m naio3?

Chemistry
1 answer:
Nookie1986 [14]3 years ago
8 0
What are the answer choices?
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Consider separate samples of water and carbon dioxide, each with the same mass. Which contains the greater number of molecules?
Ahat [919]

Answer: The sample that contains the greater number of molecules is water.

Explanation: To calculate the number of molecules, it is used the Avogadro's number ( 6.02*10^{23} particles/molecules). So, considering that the mass to water and carbon dioxide is 1g (it can be any other number), the relationship between moles and molar weight is:

moles =\frac{mass}{molar weight}

To water: moles = \frac{1g}{18 g/mol} = 0.05 moles.

Therefore,

1 mol ---- 6.02*10^{23} molecules

0.05 moles ---- x

x = 0.30*10^{23} molecules of water.

To carbon dioxide: moles = \frac{1g}{44 g/mol} = 0.02 moles.

Therefore,

1 mol ---- 6.02*10^{23} molecules

0.02 moles ---- y

y = 0.12*10^{23} molecules of carbon dioxide.

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3 years ago
Frosted glass and wax paper are ____.
matrenka [14]

Answer:

B) translucent

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Light only partially passes through them.

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