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love history [14]
2 years ago
8

Balance the following equation and find molar ratios from the equation,

Chemistry
1 answer:
Vikki [24]2 years ago
7 0
To balance it, it would be N2 + 3H2 ------> 2NH3. 

for c) it would be 2N2 + 6H2 -------> 4NH3
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A volume of 125 mL of H2O is initially at room temperature (22.00 ∘C). A chilled steel rod at 2.00 ∘C is placed in the water. If
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Answer:

41.9 g

Explanation:

We can calculate the heat released by the water and the heat absorbed by the steel rod using the following expression.

Q = c × m × ΔT

where,

c: specific heat capacity

m: mass

ΔT: change in temperature

If we consider the density of water is 1.00 g/mol, the mass of water is 125 g.

According to the law of conservation of energy, the sum of the heat released by the water (Qw) and the heat absorbed by the steel (Qs) is zero.

Qw + Qs = 0

Qw = -Qs

cw × mw × ΔTw = -cs × ms × ΔTs

(4.18 J/g.°C) × 125 g × (21.30°C-22.00°C) = -(0.452J/g.°C) × ms × (21.30°C-2.00°C)

ms = 41.9 g

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Which statement correctly reflects on genetic engineering?
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The answer is B. Genetic engineering can provide genuine benefits to mankind if there is a balance with ethical issues.

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Write a general equation for the reaction of a halogen with a metal. (Assume the oxidation state of metal equal 3) Express your
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Answer:

General chemical equation

          2 M + 3 X₂ → 2 MX₃

Explanation:

When metal reacts with halogens metal halide as a product obtained.

Now oxidation state of metal assume (+3)

and oxidation state  for halogen = (+1)

So formula of the metal halide is (MX₃)

           Denote the metal as M and halogen as X

                    the balanced chemical equation

                         2 M + 3 X₂ → 2 MX₃

So the resulted general equation when metal react with halogen is

                                       2 M + 3 X₂ → 2 MX₃

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