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3 years ago

Calclulate the mass of one molecule of nitrogen in gram

Chemistry

2 answers:

Mama L [17]3 years ago

8 0

Answer:

for its one mole it is of 28gram. according to mole concept in one mole, there is 6.022*10^23 moles are present. so mass of 1 molecule of nitogen gas is 28/(6.022*10^23)

frutty [35]3 years ago

5 0

1 molecule of N2 / (6.022 x 10^23 molecules/ mol)

= 1.6605779 x 10^-24 mols

Molar mass of nitrogen: 14.01 g / mol

Mass = mols x molar mass

Mass = (1.6605779 x 10^-24 mols) x (14.01 g/mol)
Mass = 2.326 x 10^-24 g

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Question 2 (1 point)

gregori [183]

Answer:

John Dalton

Explanation:

Both John Dalton and Democritus thought that the atom was an indivisible sphere until J.J. Thompson came out with the plum pudding model. Hope I helped!

5 0

3 years ago

PLEASE HELP AND THANKS

Kamila [148]

Answer:

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4 0

3 years ago

Calculate the total energy, in kilojoules, that is needed to turn a 46 g block

neonofarm [45]

Answer: The total energy, in kilojoules, that is needed to turn a 46 g block of ice at -25 degrees C into water vapor at 100 degrees C is 11.787 kJ.

Explanation:

Given: Mass = 46 g

Initial temperature = $-25^{o}C$

Final temperature = $100^{o}C$

Specific heat capacity of ice = 2.05 $J/g^{o}C$

Formula used to calculate the energy is as follows.

$q = m \times C \times (T_{2} - T_{1})$

where,

q = heat energy

m = mass

C = specific heat capacity

$T_{1}$ = initial temperature

$T_{2}$ = final temperature

Substitute the values into above formula as follows.

$q = m \times C \times (T_{2} - T_{1})\\= 46 g \times 2.05 J/g^{o}C \times (100 - (-25))^{o}C\\= 11787.5 J (1 J = 0.001 kJ)\\= 11.787 kJ$

Thus, we can conclude that the total energy, in kilojoules, that is needed to turn a 46 g block of ice at -25 degrees C into water vapor at 100 degrees C is 11.787 kJ.

7 0

2 years ago

Is water a mixture or compound explain 4 points

elena-s [515]

Answer:

In my opinion, water is a compound.

Explanation:

Water is mixed from Oxygen(O) and Hydrogen(H) and they cannot be splitted.

Sorry if there any mistakes

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3 years ago

Select all that apply.When the products of a reaction are hotter than the reactants

andrezito [222]

When the products of a reaction are hotter than the reactants, an exothermic reaction is happening. An exothermic reaction is a reaction that releases energy to the surroundings. The energy released should be more than what is absorbed in order to maintain the reaction.

8 0

2 years ago

Calclulate the mass of one molecule of nitrogen in gram​

Calclulate the mass of one molecule of nitrogen in gram