Chemistry Answers

For the reaction



3 H2(g) + N2(g) ----------> 2 NH3(g)

what mass of NH3(g) is produced when 2.15 L of H2(g) measured at STP reacts?

For the reaction

MnO2(gas) + 4 HCl(aq) ----------> MnCl2(aq) + Cl2(g) + 2 H2O(l)

1. what volume of Cl2(g) measured at STP is produced when 7.65 g of HCl(aq) reacts?

23.12 grams of glucose (C6H12O6) is dissolved in 1.00 kg of water. Calculate the molality

When Iron 2 hydroxide is mixed with phosphoric acid, iron 2 phosphate and water are formed. Write the balance equation foe this reaction. If 3.20g of iron 2 hydroxide I'd treated with 2.50g of phosphoric acid, what is the limiting reagent

How is order of reaction determined by half-life method? Explain with the help of an example

Explain the pressure and volume correction terms to the ideal gas equation and deduce van der Waals equation.

Calculate the i) average speed ii)root mean square speed and iii) most probable speed of oxygen molecules at 515K.(Given M_m(O_(2))=0.016kg mol^(-1))

Whatever solvent used the solution should be topped up to its final volume using water. true or false

Arrange the following according to increasing freezing point:

1m NaCl, 1m CaCl2, 1m C6H12O6, 1m AlCl3

Explain your answer.

1.    Calculate the pH of a buffer solution consisting of 0.50 M HC₂H₃O₂ and 0.50 M NaC₂H₃O₂ (buffer solution A). K_a of HC₂H₃O₂ = 1.75 x 10^-5.

a.     Calculate the new pH of the buffer solution after adding 0.020 mol HCl to 1.0 L of buffer solution A (5 pts).

b.    Calculate the new pH of the buffer solution after adding 0.020 mol NaOH to 1.0 L of buffer solution A (5 pts).