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Katyanochek1 [597]
3 years ago
11

Perform the following operation

Chemistry
1 answer:
BabaBlast [244]3 years ago
3 0

Answer:

Value of expressions in scientific notation = 15.86 x 10⁻¹⁰

Explanation:

Given expressions:

2.600 x 10⁻⁵ x 6.100 x 10⁻⁵

Find:

Value of expressions in scientific notation

Computation:

2.600 x 10⁻⁵ x 6.100 x 10⁻⁵

2.600 x 6.100 x 10⁻⁵x 10⁻⁵

15.86 x 10⁻⁵ x 10⁻⁵

We know that;

qᵃ x qᵇ = q⁽ᵃ⁺ᵇ⁾

So,

15.86 x 10⁽⁻⁵⁻⁵⁾

15.86 x 10⁽⁻¹⁰⁾

Value of expressions in scientific notation = 15.86 x 10⁻¹⁰

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3 years ago
Question 5
seropon [69]

Answer:

0.128 g

Explanation:

Given data:

Volume of gas = 146.7 cm³

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Mass of oxygen gas = ?

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Volume of gas = 146.7 cm³ (146.7 /1000 = 0.1467 L)

Pressure of gas = 106.5 Kpa (106.5/101 = 1.1 atm)

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V = volume

n = number of moles

R = general gas constant = 0.0821 atm.L/ mol.K  

T = temperature in kelvin

n = PV/RT

n = 1.1 atm× 0.1467 L / 0.0821 atm.L/ mol.K   × 440.15 K

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Mass = 0.128 g

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