Chemistry Answers

) In the solid state at 0 K, nitric oxide is capable of existing in two orientations such as 

NONO and NOON, which have equal probabilities. Calculate the molar entropy of 

NO at 0 K?

How would you test for the presence of the following ions in aqueous solution of an unknown salt? kindly provide name of the test and a balanced chemical equation...Ag^2+

The freezing point of benzene is 5.5oC. What is the freezing point of a solution of 5.00 g of naphthalene (C10H8) in 444 g of benzene (Kf of benzene = 4.90oC/m) 

if xylitol has a chemical formula of c5h12o5, what is the percentage of oxygen in the compound?

To determine the total hardness of given water sample n/20 solution

The energy for the following reaction was measured to be -1033.0 kJ/mol.

Mg(g) + 2 Cl(g) → MgCl₂(s).

Using this fact and the data in the table below, calculate the enthalpy (in kJ/mol) required to separate the ions from the lattice for this reaction:

MgCl₂(s) → Mg²⁺(g) + 2Cl⁻(g).

How many moles of NO(g) can be produced in the reaction of 3.00 mol NH3(g) and 4.00 mol O2(g) ? 

4 NH3(g) + 5 O2(g) = 4 NO(g) + 6 H2O(l)

The percentage of nitrogen in a fertilizer designated as 6 12 8 is

If 190cmcube3 of hydrogen is collected at 26degree celcius and 736mmHg,calculate it volume at S.T.P (standard pressure is 760mmHg

TRUE OR FALSE

1. When solid is heated, the temperature rises until it reaches the melting point temperature.

2. Concentrated means that the amount of solute is relatively high.

3.The alcohol content of hard liquor is given by the term “ABV”, which is defined as twice the percentage by volume of ethanol present.

4. The attractive forces between neighboring particles are called intermolecular forces.

5. The dispersion forces of an element determines to which atom the shared electrons are closer.