Inorganic Chemistry Answers

A student was asked to make up a 10% w/w solution of sodium carbonate. Calculate the amount of solute and solvent required to prepare that

the total pressure of gas collected over 785.0 mmhg and the temperature is 18.0 c. What is the pressure of hydrogen gas formed in mmHg

What is the concentration of hydronium ions in a solution which is 0.5M with respect to nitrous acid and 0.65M with respect to sodium nitrite. Assume that sodium nitrite is completely ionized?

What is the concentration of ammonia which reacts with water to produce ions to the extent of 1.98 percent. Ionization constant of ammonia=1.81×10^-5

1. The decomposition of acetaldehyde CH₃ CHO^___CH_4(g)+CO_(g)

1.     A student was asked to make up a 10% w/w solution of sodium carbonate. Calculate the amount of solute and solvent required to prepare that solution? 

What is the purpose for a company to determine percent yield of a product and not just the theoretical yield?

• The percent yield enables the calculation for the exact amount of product that can be expected, which may help determine profit, an accurate amount of reactant to use, and the efficiency of the system.
• The percent yield enables the calculation of the maximum amount of error that can be expected, which may help determine loss of profit, minimal amount of reactant to use, and the inefficiency of the system.
• The percent yield enables the calculation of the maximum amount of product that can be expected, which may help determine loss of profit, minimal amount of reactant to use, and the inefficiency of the system.

select which of the options

How many mol of NO are produced from a reaction if its mass is 2.05 g?

Periodic Table Reference Sheet

• 1.46 × 10² mol NO
• 6.83 × 10^–2 mol NO
• 1.28 × 10^–1 mol NO
• 6.15 × 10¹ mol NO

it's NOT: 6.15 × 10¹ mol NO or 1.46 × 10² mol NO

If Ag2O decomposes, what is the balanced equation that shows the products formed?

• 2Ag2O(s) → 4Ag(s) + O2(g)
• Ag2O(s) → Ag2(s) + O(g)
• 2Ag2O(s) → 4Ag(s) + 2O(g)
• Ag2O(s) → 2Ag(s) + O(g)

it's NOT: Ag2O(s) → Ag2(s) + O(g)

If Mg and HNO₃ undergo a single-displacement reaction, what balanced equation shows the products formed?

• Mg + HNO₃ → H₂ + Mg(NO₃)₂
• Mg + 2HNO₃ → H₂ + Mg(NO₃)₂
• 2Mg + 2(HNO₃) → 2MgH + 2(NO₃)
• Mg + 2HNO₃ → MgH + (NO₃)

it's NOT: Mg + HNO₃ → H₂ + Mg(NO₃)₂