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maxonik [38]
3 years ago
5

A single replacement reaction is a reaction in which one element replaces a similar element within a compound. True or false?

Chemistry
1 answer:
AleksAgata [21]3 years ago
8 0

Answer:

true

Explanation:

A single replacement reaction is a reaction that an element is displaced with another element in a compound

A+BC------AC+B

Mg+2HCl-------MgCl2+H2

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lyudmila [28]

Answer:

4.05 × 10²² atoms

Explanation:

Step 1: Given data

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Step 2: Calculate the moles corresponding to 3.95 g of nickel

The molar mass of nickel is 58.69 g/mol.

3.95 g × (1 mol/58.69 g) = 0.0673 mol

Step 3: Calculate the atoms in 0.0673 moles of nickel

We will use Avogadro's number: there are 6.02 × 10²³ atoms of nickel in 1 mole of atoms of nickel.

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