2NO(g) + 5H2(g) ⟶ 2NH3(g) + 2H2O(g)If 45.4 grams of NO and 12.1 grams of H2 react, what is the largest amount of ammonia that can be formed? The final answer should be reported to one place after the decimal point

25.8g of NH3 can be formed

Explanation:

To solve this question we must convert the mass of each reactant to moles using molar mass. With the chemical equation we can find limiting reactant. The moles of limiting reactant are used yo find the moles of ammonia produced and its mass:

Moles NO -30.01g/mol-

45.4g * (1mol / 30.01g) = 1.51 moles

Moles H2 -Molar mass: 2.01g/mol-

12.1g * (1mol / 2.01g) = 6.02 moles

For a complete reaction of 6.02 moles of H2 are needed:

6.02mol H2 * (2mol NO / 5mol H2) = 2.41 moles NO are needed

As there are just 1.51 moles, NO is limiting reactant

Moles NH3:

1.51 moles NO * (2mol NH3 / 2mol NO) = 1.51 moles NH3

Mass NH3 -Molar mass: 17.031g/mol-

1.51 moles NH3 * (17.031g / mol) =

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.

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.