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Mariulka [41]
3 years ago
6

Of the three metals pb cu zn which is the most active

Chemistry
1 answer:
Paladinen [302]3 years ago
6 0
Zn is the most active of the three metals.
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At 25.5°C a gas has a volume of 125mL. What would be the volume be if the temperature increased to 50°C
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245 mL

Explanation:

Please see the step-by-step solution in the picture attached below.

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7 0
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Which of these is not a biomass source?
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7 0
3 years ago
Read 2 more answers
3 H2 (g) + N2 (g) 2 NH3 (g)
ale4655 [162]

Answer:

Mass = 0.697 g

Explanation:

Given data:

Volume of hydrogen = 1.36 L

Mass of ammonia produced = ?

Temperature = standard = 273.15 K

Pressure = standard = 1 atm

Solution:

Chemical equation:

3H₂ + N₂       →      2NH₃

First of all we will calculate the number of moles of hydrogen:

PV  = nRT

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

1atm ×1.36 L = n × 0.0821 atm.L/mol.K × 273.15 K

1.36 atm.L = n × 22.43 atm.L/mol

n = 1.36 atm.L / 22.43 atm.L/mol

n = 0.061 mol

Now we will compare the moles of hydrogen and ammonia:

                 H₂         :          NH₃

                  3          :            2

                0.061     :         2/3×0.061 = 0.041

Mass of ammonia:

Mass = number of moles × molar mass

Mass = 0.041 mol × 17 g/mol

Mass = 0.697 g

4 0
3 years ago
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