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lutik1710 [3]
3 years ago
12

This is the chemical formula for Chormium (III) nitrate Cr(NO3)3Calculate the mass percent of nitrogen in chromium(III) nitrate.

Chemistry
1 answer:
butalik [34]3 years ago
6 0

Answer:

The percent composition for nitrogen in chromium(III) nitrate is 6%.

Explanation:

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A 15.0 L tank of gas is contained at a high pressure of 8.20 x 10^4 torr. The tank is opened and the gas expands into an empty c
Inga [223]

Answer:

20.5torr

Explanation:

Given parameters:

V₁  = 15L

P₁  = 8.2 x 10⁴torr

V₂ = 6 x 10⁴L

Unknown:

P₂  = ?

Solution:

To solve this problem we have to apply the claims of Boyle's law.

Boyle's law is given mathematically as;

            P₁ V₁   = P₂V₂

where P₁ is the initial pressure

          V₁ is the initial volume

           P₂ is final pressure

           V₂ is final volume

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3 years ago
Definition of volume
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Answer:

The amount of space an object occupies.

Explanation:

3 0
3 years ago
815 cal of heat is added to 5.00 g ice at –20.0 °C. What is the final temperature of the water?
deff fn [24]
The amount of heat needed to raise the temperature of an object is obtained through the equation,
                                       H = m(cp)(20) + m (heat of fusion) + m(cp) (dT)
where H is heat, m is mass, cp is specific gravity, and dT is the change in temperature. The specific gravity of water is 0.5 cal/g.C. The third term is for water and cp is equal to 1 cal/g.C. Substituting the values,
                     815 cal = (5 g)(0.5 cal/g.C)(20C) + (80 cal/g)(5 g) + 5(1)(T2)
The value of T2 is 73 degrees C. 
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3 years ago
Give me a summary on the big bang theory -Science
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2 years ago
What is the difference between a strong acid and a weak acid?
Jobisdone [24]

Answer:

The 3rd choice

Explanation:

A strong acid ionises COMPLETELY in water to produce high concentration of hydrogen ions

A weak acid ionises PARTIALLY in water to produce low concentration of hydrogen ions

4 0
3 years ago
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