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nalin [4]
3 years ago
9

Calculate number of moles in 86.4 g of Ni

Chemistry
1 answer:
Ira Lisetskai [31]3 years ago
4 0
Number of moles = mass of Ni /molecular mass of Ni

mass of nickel = 86.4 g
molecular mass of nickel = 58.69
number of moles of Ni in 86.4 g
=86.4/58.69
=1.472 mol  
(rounded to four significant figures instead of three because the first digit of the answer starts with a 1).
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Can a combination reaction be a redox reaction ?
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Answer:

Yes A redox reaction can be a combination reaction.

Two elements are mixed in a combination reaction to produce a single product.

Explanation:

Example: water formula

2H2 + O2 → 2H2O

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2H2 + O2 → 2H2O

4 0
3 years ago
Why doesn't water change into ice at 10 degree Celsius?
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3 0
3 years ago
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What is the significant digit in 23.45
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7 0
2 years ago
How many moles of water are in a beaker with 50 mL?
tatiyna

Answer:

Number of moles = 2.8 mol

Explanation:

Given data:

Number of moles of water = ?

Volume of water = 50 mL

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1 cm³ =  1 mL

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5 0
3 years ago
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