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3 years ago

How many moles are in 3.01 x 10 atoms of magnesium

Chemistry

1 answer:

Fiesta28 [93]3 years ago

7 0

There are 3.01 moles. round to 3 if it asks for a whole number

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Which cell structure is correctly paired with its primary function?

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Explanation:

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Nucleus provides genetic code (DNA)

Ribosomes assemble amino acids chains based on the DNA from nucleus to form proteins

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3 years ago

The three major types of faults are normal, reverse and syncline. true or false

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The three major types of faults are Normal, Reverse and Strike-slip faults.

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A neutron has a mass A. that is less than the mass of an electron. B. that is about equal to the mass of an electron. C. that is

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Answer:

Option C:- that is equal to mass of an proton.

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3 years ago

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3 years ago

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Write a double replacement precipitation reaction A precipitate forms when aqueous solutions of nickel(II) chloride and silver(I

harkovskaia [24]

<u>Answer:</u> The balanced chemical equation is written below.

<u>Explanation:</u>

Double displacement reaction is defined as the reaction in which exchange of ions takes place.

$AB+CD\rightarrow CB+AD$

Precipitation reaction is defined as the reaction in which an insoluble salt is formed when two solutions are mixed containing soluble substances. The insoluble salt settles down at the bottom of the reaction mixture.

When nickel (II) chloride reacts with silver (I) nitrate, it leads to the formation of white precipitate of silver chloride and an aqueous solution of nickel (II) nitrate.

The balanced chemical equation for the above reaction follows:

$NiCl_2(aq.)+2AgNO_3(aq.)\rightarrow 2AgCl(s)+Ni(NO_3)_2(aq.)$

By Stoichiometry of the reaction:

1 mole of aqueous solution of nickel (II) chloride reacts with 2 moles of aqueous solution of silver (I) nitrate to produce 2 moles of solid silver chloride and 1 moles of aqueous solution of nickel (II) nitrate

Hence, the balanced chemical equation is written above.

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3 years ago