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You need to dissolve CaCl2 in water to make a mixture that is 38.0% calcium chloride by mass. If the total mass of the mixture is 681.2 g, what masses of CaCl2 and water should be used?
Consider the following reaction: 2A + B → 3C + D If 63.0 mol A and 42.0 mol B react to form 54.0 mol C. What is the percent yield of this reaction.
Calculate the mass of HONH2 required to dissolve in enough water to make 250.0 ml of solution having a pHof 10.00 (Kb=1.1*10 (-8).
Consider the reaction. N2(g) + O2(g) --> 2NO(g) How many moles of NO are obtained when 0.029 mol of N2 is completely reacted
the radius of a iron atom is 124 pm. how many iron atoms would have to be laid side by side to span a distance of 1.71
What is the value of Kc for the decomposi- tion of ammonium carbamate into ammonia and carbon dioxide?
If 32mL of 7.0M H2SO4 was spilled, what is the minimum mass of NaHCO3 that must be added to the spill to neutralize the acid?
Combine 15.0 mL of 0.125 M chromium (III) nitrate and 15.0 mL of 0.125 M ammonium carbonate. What is the limiting reactant
The product of this reaction, ozone, is a pollutant in the lower atmosphere. Ozone is an eye and lung irritant and also accelerates the weathering of rubber products. write Lewis strucktures of each of the reactants and products in the preceding r..
What is the PH after .15 mol of NaOH is added to .050 mol of propanic acid and ,080 M of sodium propanoate with a ka of 1.3x10^.5
.134 mol of KCl and .257 mol of CaCl2 were dissolved in water. calculate the total number of moles of Cl- ions in the solution
If a process is carried out at constant pressure P and the volume V of the system decreases, then V is (negative, positive) and the work w is (negative, positive, zero).
HxCyOz + NaOH --> xH2O + NaxCyOz If 27.33ml of 0.0973M NaOH were used to titrate 0.328g of pure unknown carboxylic acid, determine the number of reactive H in a single molecule of the carboxylic acid.
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