Other Chemistry Answers

Calculate the mass of glucose and water required to make 250 grams of 25% solution of glucose?

9) a) Calculate the molarity of a solution made by dissolving 0.0715 mol Na2SO4 in enough water to form 650
mL of solution. b) How many moles of KMnO4 are present in 75.0 mL of a 0.0850 M solution? c) How many
millimeters of 11.6 M HCl solution are needed to obtain 0.105 mol of HCl?

How much unknown must be weighed to produce 0.7 grams of AgCl precipitate if the original sample is 35% chloride?

25fg to kg

23.8 fg to kg

6.0 g of cobalt(2) carbonate was added to 40 cm^3 of hydrochloric acid, concentration 2.0 mol/dm3.Calculate the maximum yield of cobalt(2) chloride-6-water and show that the cobalt(2) carbonate was in excess?

100g nitrogen mixed with 92g hydrogen
a) identity the limiting reagent
b) calculate the weight of amonia form
c) which reactent remains and how much

Propane, C3H8, is flammable and used in rural areas where natural gas is not available. What is the coefficient of oxygen in the balanced equation for the combustion of propane?


__C3H8(g) + __O2(g) __CO2(g) + __H2O(g)

In an experiment, 0.520 g of chromium metal reacts with 3.807 g of iodine. Using the conservation of mass law, predict the mass of product.


2 Cr(s) + 3 I2(s) 2 CrI3(s)

Considering the limiting reactant, what is the volume of NO gas produced from 60.0 L of ammonia gas and 50.0 L of oxygen gas? (Assume constant conditions.)


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