3 years ago

Sodium chloride is formed when the metal sodium bonds to the nonmetal chlorine. the atoms are hold together by a

Chemistry

1 answer:

Zinaida [17]3 years ago

3 0

Usually when metals and Nonmetals join they are held together by ionic bonds.

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erastovalidia [21]

Answer:80KM is distance. 30KM north is displacement.

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3 years ago

Explain how you know it must be oxygen. Where

kaheart [24]

Answer:

oxygen is a present in our atmosphere and mixed with other gases on the surrounding screen plants are also measure source of getting oxygen they take carbon dioxide from making their food by for the cities and give away oxygen in return

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most of the earth oxygen comes from tiny Ocean plants are called phytoplaston

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2 years ago

What is the partial pressure of helium gas in a mixture that contains 8.00 grams of helium and 8.60 mol argon gas with a total p

Agata [3.3K]

Answer:

$P_{He}=9.06torr$

Explanation:

Hello there!

In this case, we can identify the solution to this problem via the Dalton's rule because the partial pressure of helium is given by:

$P_{He}=x_{He}P_T$

Whereas the mole fraction of helium is calculated by firstly obtaining the moles and then the mole fraction:

$n_{He}=8.00g\frac{1mol}{4.00g}=2.00mol\\\\ x_{He}=\frac{n_{He}}{n_{He}+n_{Ar}} \\\\ x_{He}=\frac{2.00mol}{2.00mol+8.60mol}\\\\x_{He}=0.189$

Then, we calculate the partial pressure as shown below:

$P_{He}=0.189 *48.0torr\\\\P_{He}=9.06torr$

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3 years ago

What must be true of a substance with a lot

LUCKY_DIMON [66]

Answer:

A is the answer.

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3 years ago

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Pb + Fe(SO4) =Pb(SO4) + Fe what type of reaction is this ?

VikaD [51]

Answer:

Single replacement

Explanation:

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3 years ago