A chemist measures the amount of nitrogen gas produced during an experiment. She finds that of nitrogen gas is produced. Calculate the number of moles of nitrogen gas produced. Be sure your answer has the correct number of significant digits.

The question is incomplete, here is the complete question:

A chemist measures the amount of nitrogen gas produced during an experiment. She finds that of 282. g of nitrogen gas is produced. Calculate the number of moles of nitrogen gas produced. Be sure your answer has the correct number of significant digits.

The number of moles of nitrogen gas produced are 10.07 moles

Explanation:

To calculate the number of moles, we use the equation:

We are given:

Given mass of nitrogen gas = 282 g

Molar mass of nitrogen gas = 28 g/mol

Putting values in above equation, we get:

Hence, the number of moles of nitrogen gas produced are 10.07 moles

the answer would be c

the best answer is d because the strong cohesion is caused by the ability of water molecules to undergo hydrogen bonding.

a is incorrect because when water solidifies, it becomes   ice, which expands and occupies a bigger volume for the same mass of water in its liquid state.

b is incorrect because water has high surface tension. besides bonding to itself it hydrogen bonds to other molecules at the top decreasing possibility for breaking of attractive forces.

c is incorrect because the water molecule has oxygen which is highly electronegative and so pulls the electron pair towards itself creating a dipole moment, making the molecule polar.

e is incorrect because water has strong adhesion, ability to stick to other molecules such as glass because of this molecules having stronger hydrogen bonding than water.