General Chemistry Answers

What is the percentage water in alum [K(H2O)6Al(H2O)6(SO4)2]?

 Carbonic acid (H2CO3) breaks down to produce water and a gas. Gas tests reveal that the gas turns limewater cloudy, and extinguishes candle flames.

Which gas law explains why lungs expand as they fill with air? Prove your answer in 5 sentences.

The responses in the kidney in order to remove toxic ammonia due to the ketoacidosis

If 3.0 mol PbO2 reacts with excess SO2, 2 mol PbSO4 is produced. What is the percentage yield?

If 25 g of C3H8 reacts with excess Oxygen, how many moles of water will be formed?

1.Given below is the dissociation of NH₃ in water having a K_b value of 1.8 × 10^-5. The reaction started with the equilibration of 0.65 M NH₃. A common ion that is 0.25 M NH₄Cl, was added to the initial solution and waited for some time for the reaction to reach equilibrium once again.

NH_3(aq) + H₂O_(l) ↔ NH₄⁺_(aq) + OH^-_(aq)

Determine the pH of the solution given after the addition of the common ion. The K_w of water is 1.0 × 10^-14.

2.What is the pH of a buffer solution that is 0.350 M ethylamine and 0.200 Methylammonium chloride, after the addition of 0.100 M HNO₃? The value of K_b for ethylamine is 4.7 x 10^-4.

identify the given substances if it is polar or non polar , and which type of intermolecular forces they belong

1.H---F

2.

2. Aqueous solutions of silver nitrate and potassium chloride can be mixed to precipitate silver

chloride, Calculate the mass of silver chloride that is formed in the reaction of 9.20 g silver

nitrate with 5.15 g potassium chloride.

A solution was made by dissolving 3.75 g of a solute in 108.7 g of acetone . The solution boiled at 56.58° C. The boiling point of pure acetone is 55.95° C, and the Kb =1.71° C/m. What is the molecular weight of the solute?