How do you calculate how mangy grams of a solid to dissolve in water to make a solution given the milliliters and the molarity? Such as given 100 mL of .1000 M Sr(NO3)2

obsorbance of 0.135 M

For an experiment you need 200 mL of 18% H2O2 but the stockroom only has 30% H2O2. How do you make the solution for your experiment?

At 139 C, the pressure of a sample of nitrogen is 1.98 atm. What will the pressure be at 209 C, assuming constant volume?

Codeine, a cough suppressant, extracted from crude opium, is a weak base with a Kb= 1.62*10^-6. What will be the pH of a 0.020M solution of codeine?

the density of liquid water is 1 g/ml. How many moles of water in one drop in liquid and what volumw would this ammount of water occupy when vaporized at 100 dgrees celcius and 1 atm?

how many grams of hydrogen are produced when 4.72 of AL react with excess sulfuric acid?

what is lewis structure of C2H2Br2

A gas occupying a volume of 243 mL at a pressure of 0.970 atm is allowed to expand at constant temperature until its pressure reaches 0.541 atm. What is its final volume?

Suggest a reason why the number of GC peaks observed for the alkene product in this experiment is smaller than the number of isomeric alkenes that are formed in this reaction.