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3 years ago

Convert 18.9 moles to MgCl2 to formula units

Chemistry

1 answer:

Masja [62]3 years ago

3 0

Answer:

18.9 moles of MgCl2 = 17.834 kg of MgCl2

Explanation:

The molecular weight of MgCl is 80.0 g/mol . So, to convert the given mole amount to grams, multiply this by this number, which is constant for all compounds with a specific composition (mass fraction).

Considering the original question was in the context of chemistry, I wanted to make it seem formal and more educational too. Hopefully that worked!

EDIT: Came up with some text around what happens inside cells that would have made it better if someone just had an issue converting units, but I doubt my answer will be accepted >.<

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Answer:

6.022*1023

Explanation:

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How do you find the delta H per grams in an chemical formula

Allushta [10]

Answer:

•How do you find the delta H per grams in an chemical formula

➢ Subtract the sum of the heats of formation of the reactants from that of the products to determine <u>delta H: delta H = –110.53 kJ/mol</u> – (–285.83 kJ/mol) = 175.3 kJ.

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3 years ago

Aly's science class was looking at bacteria through a microscope. Aly's teacher said some bacteria can be as small as 0.00365 cm

olga nikolaevna [1]

Answer:

$0.00365\ cm=3.65\times 10^{-3}\ cm$

Explanation:

Aly's teacher said some bacteria can be as small as 0.00365 cm long.

In this problem, we need to write the length of the bacteria written in scientific notation. Any number can be written in the form of scientific notation as follows :

$N=a\times 10^b$

a is a real no and b is an integer

In the given number, there are two zeroes before 3. We need to shift the decimal after 3. It can be done as follows :

$0.00365\ cm=3.65\times 10^{-3}\ cm$

Hence, this is the required solution.

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3 years ago

HELP HELP HELP HELP

klemol [59]

the answer is Nitrogen.

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3 years ago

Where in the cell do transcription and translation take place? Transcription takes place in a protein, and translation takes pla

oksano4ka [1.4K]

Answer:

The correct answer will be option-Transcription takes place in the nucleus, and translation takes place in ribosomes.

Explanation:

The regulation of gene is regulated and controlled by two main processes of central dogma called transcription and translation.

Transcription is the process of formation of messenger RNA or mRNA from a single strand of DNA whereas translation is the formation of protein from mRNA.

This process takes place in different sites in prokaryotes and eukaryotes. In prokaryotes, both transcription and translation take place in the cytoplasm but in eukaryotes, the transcription takes place in the nucleus whereas translation takes place in the ribosomes present in the cytoplasm.

Thus, the selected option is the correct answer.

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3 years ago

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