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3 years ago

8. How many grams are there in 5 moles of lithium?

Chemistry

1 answer:

nikitadnepr [17]3 years ago

6 0

Answer: m = n·M = 34.7 g

Explanation:

M(Li) = 6.941 g/mol, n = 5 mol

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What is the mass in 6.34x10^23 molecules of calcium chloride

Liono4ka [1.6K]

Answer : The mass of calcium chloride is, 116.84 grams

Solution : Given,

Molar mass of calcium chloride, $CaCl_2$ = 110.98 g/mole

Number of molecules of calcium chloride = $6.34\times 10^{23}$

As we know that,

1 mole of calcium chloride contains $6.022\times 10^{23}$ molecules of calcium chloride

or,

1 mole of calcium chloride contains 110.98 grams of calcium chloride

Or, we can say that

As, $6.022\times 10^{23}$ molecules of calcium chloride present in 110.98 grams of calcium chloride

So, $6.34\times 10^{23}$ molecules of calcium chloride present in $\frac{6.34\times 10^{23}}{6.022\times 10^{23}}\times 110.98=116.84grams$ of calcium chloride

Therefore, the mass of calcium chloride is, 116.84 grams

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3 years ago

Charge on proton is?

QveST [7]

Answer:

positive

Explanation:

proton is a subatomic particle with a postive charge on it.

hope this helps!!! ☺️

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3 years ago

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How is geometrical symmetry related to the polarity of a molecule?

RoseWind [281]

C. a symmetrical molecule is always nonpolar

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Which of the following are diatomic elements? Select all that apply.

TiliK225 [7]

Answer:

Explanation:

A diatomic element in that list is Bromine

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2 years ago

X+KOH→CH-CH=CH 2 +KBr+H2O. What is the<br> compound represent “x”?

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Answer:

I guess it is HBr

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3 years ago