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Oliga [24]
3 years ago
9

How many moles of NO3 are there in 6.2g?

Chemistry
2 answers:
Kitty [74]3 years ago
5 0

Answer : The number of moles of NO_3 is, 0.1 moles

Solution : Given,

Mass of NO_3 = 6.2 g

Molar mass of NO_3 = 62 g/mole

Now we have to calculate the moles of NO_3.

\text{Moles of }NO_3=\frac{\text{Mass of }NO_3}{\text{Molar mass of }NO_3}=\frac{6.2g}{62g/mole}=0.1moles

Therefore, the number of moles of NO_3 present in 6.2 g is, 0.1 moles

Nataliya [291]3 years ago
3 0
6.2 divided by the mass number of NO3 is 0.1 moles. Anytime your trying to find the moles of something you divide it by the mass number of your combined elements.
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dlinn [17]

Answer: 190 g of magnesium chloride can be produced by reacting 2 moles of chlorine gas with excess magnesium bromide.

Explanation:

The balanced chemical reaction is;

Cl_2+MgBr_2\rightarrow MgCl_2+Br_2

Cl_2 is the limiting reagent as it limits the formation of product and MgBr_2 is the excess reagent.

According to stoichiometry :

1 mole of Cl_2 produces = 1 mole of MgCl_2

Thus 2 moles of Cl_2 will produce=\frac{1}{1}\times 2=2moles  of MgCl_2

 Mass of MgCl_2=moles\times {\text {Molar mass}}=2moles\times 95g/mol=190g

Thus 190 g of magnesium chloride can be produced by reacting 2 moles of chlorine gas with excess magnesium bromide

5 0
3 years ago
How many carbon atoms are there in a 1.5-carat diamond? diamonds are a form of pure carbon. ( 1 carat=0.20 grams)?
11111nata11111 [884]
1 carot = 0.2 grams
1.5 carot = 0.3 grams.

1 mol of Carbon = 12 grams
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0.025 mol of carbon is x

1/0.025 = 6.02*10^23 * /x
x = 0.025 * 6.02 * 10^23
x = 1.5 * 10^22 atoms of carbon.
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3 years ago
Which choice is an example of a consumer? Question 9 options: tree fungi bee sun
xz_007 [3.2K]
The correct answer is C) Bee, any living thing, such as a bee, cannot make its own food therefor it is a consumer
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3 years ago
Read 2 more answers
AUG, the codon that codes for the amino acid methionine is also called a ____ codon (answer choices 1.start 2.Stop 3.Go 4.beginn
Katarina [22]
<h2>Answer:  START (2)</h2>

Explanation:

AUG is a <u>START</u> codon.  (2)

A start codon is the first codon translated by a ribosome. It usually produces an amino acid that initiates the producyion of a polypeptide chain.

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Can someone please help me!!!!
Ostrovityanka [42]

Answer:

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