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natulia [17]
4 years ago
15

Nitrogen and hydrogen react to form ammonia. Consider the mixture of N2 (blue spheres) and H2 (gray spheres) in the illustration

. All BUT one statement regarding the reaction is trueA)Nitrogen is in excess.B)Hydrogen is in excess.C)This is a synthesis reaction.D)Hydrogen is the limiting reactant.
Chemistry
1 answer:
Anna [14]4 years ago
6 0

Answer: Option (C) is the correct answer.

Explanation:

A reaction in which two or more reactants combine to result in the formation of a single product is known as a synthesis reaction.

For example, N_{2} + 3H_{2} \rightarrow 2NH_{3} is a synthesis reaction.

Whereas the number of moles of either nitrogen or oxygen is not given. Therefore, we cannot tell which reactant is in excess or not.

Thus, we can conclude that the statement, this is a synthesis reaction is the true statement.

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7 0
2 years ago
1) If 0.193 grams of toluene is dissolved in 2.532 grams of p-xylene, what is the molality of toluene in the solution?2) If a fr
AveGali [126]

Answer:

The value of K_f for xylene is 4.309°C/m.

The molar mass of pentane using this data is 73.82 g/mol.

Explanation:

\Delta T_f=K_f\times \frac{\text{Amount of solute}}{\text{Molar mass of solute}\times \text{Mass of solvent(kg)}}

where,

\Delta T_f =depression in freezing point

K_f = freezing point constant  

we have :

1) freezing point constant  for xylene = K_f =?

Mass of toluene = 0.193 g

Mass of xylene = 2.532 kg = 0.002532 kg ( 1 g =0.001 kg)

\Delta T_f=3.57^oC

3.57^oC=K_f\times \frac{0.193 g}{92 g/mol\times 0.002532 kg}

K_f=4.309^oC/m

The value of K_f for xylene is 4.309°C/m.

2)

Mass of pentane = 0.123 g

molar mass of pentame= M

Mass of xylene = 2.493 g =  0.002493 kg

Freezing point Constant of xylene = K_f=4.309^oC/m

2.88^oC=4.309^oC/m\times \frac{0.123g}{M\times 0.002493 kg}

M = 73.82 g/mol

The molar mass of pentane using this data is 73.82 g/mol.

5 0
3 years ago
A researcher recorder that a chemical reaction require 2.90 gal water and raised the temperature of the reaction vessel by 57°F.
Ivan

Answer:

10.875L

Explanation:

The problem here is a simple conversion. The conversion is from gal to liters Liter is a SI unit for recording volume as stated in the problem.

Given that:

              1 gallon of water = 3.75L

              2.90 gallon will be 2.9 x 3.75; 10.875L

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3 years ago
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