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max2010maxim [7]
3 years ago
8

How would -174.2 be written in scientific notation?

Chemistry
1 answer:
Alika [10]3 years ago
3 0
The answer is -1.742 x 10^2 which the answer is C
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A sample of gas has an initial volume of 3.88 l at a pressure of 707 mmhg . part a if the volume of the gas is increased to 5.43
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Using boyles law
p1v1=p2v2
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A mixture of CuSO4 · 5H2O and MgSO4 · 7H2O is heated until all the water is lost. If 5.127 g of the mixture gives 2.817 g of the
Nadusha1986 [10]

Answer:

Let the mixture is X% by mass of CuSO

4

.5H

2

O and 100 - X % by mass of MgSO

4

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4

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2

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4

.7H

2

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The molar masses of CuSO

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.5H

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O are 249.7 g/mol and 246.5 g/mol respectively.

The number of moles of CuSO

4

.5H

2

O=

249.7

0.05X

=2.00×10

−4

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Explanation:

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