Question

What mass of silver chloride can be produced from 1.34 L of a 0.174 M solution of silver nitrate?

Express your answer with the appropriate units.

The reaction described in Part A required 3.12 L of calcium chloride. What is the concentration of this calcium chloride solution?

Express your answer with the appropriate units.

A scientist wants to make a solution of tribasic sodium phosphate, Na3PO4, for a laboratory experiment. How many grams of Na3PO4 will be needed to produce 400. mL of a solution that has a concentration of Na+ ions of 0.700 M ?

Express your answer to three significant figures and include the appropriate units.

What is the net ionic equation of the reaction of MgCl2 with NaOH?

Express you answer as a chemical equation including phases.

What is the net ionic equation of the reaction of MgSO4 with Pb(NO3)2?

Express you answer as a chemical equation including phases.

Calculate the amount of heat transferred when 28.0 g of CH3OH(g) is decomposed by this reaction at constant pressure.

Express the heat to three significant digits with the appropriate units.

For a given sample of CH3OH, the enthalpy change during the reaction is 82.6 kJ . What mass of methane gas is produced?

Express the mass to three significant digits with the appropriate units.

How many kilojoules of heat are released when 38.2 g of CH4(g) reacts completely with O2(g) to form CH3OH(g) at constant pressure?

Express heat to three significant digits with the appropriate units.

A 1.8 kg block of iron at 29 ∘C is rapidly heated by a torch such that 12 kJ is transferred to it. What temperature would the block of iron reach assuming the complete transfer of heat and no loss to the surroundings? If the same amount of heat was quickly transferred to a 830 g pellet of copper at 27 ∘C, what temperature would it reach before losing heat to the surroundings?

qcs, Fe(s)cs, Cu(s)===mcsΔT0.450 J/g⋅∘C0.385 J/g⋅∘C

Express the final temperatures of the iron and copper in ∘C to two significant figures separated by a comma.

Answer 1

Ans 1 :

Molarity = no. of moles / volume of solution in L

0.174 = n / 1.34

n = 0.23316 mol

So the mass of silver = 0.23316 x molar mass

= 0.23316 x 107.8682

= 25.15 g