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what volume(in mL) of 0.0887 M MgF2 solution is needed to make 275.0mL of 0.0224 M MgF2 solution?
A 50.0g silver object and a 45.0 g gold object are both added to a 55.5 mL of water contained in a graduate cylinder. what is the new water level in the cylinder.
Heated and allowed to expand against a constant pressure of 1.20 atm until its volume reaches twenty eight Litres. Now determine Which of the given data is correct?
2 FeBr3(aq) + 3 Na2CO3(aq) Fe2(CO3)3(s) + 6 NaBr(aq) what is the net ionic eqation for this molecular equation.
121 cal of heat are added to 50.0 g of water initially at 15.0 (degrees celsius). What is the final temperature of the water.
Determine the percent yield if a student decomposes H 2 O to Form hydrogen (H) and oxygen(O). If the student starts with 34.7 grams of H2O and collects 20.0 grams of oxygen,
A woman requires taking ibuprofen twice daily in 625mg amount. Each pill in the bottle is 250 mg then determine the number of pills the woman requires to consume each time she needs 625mg dosage
A chemical firm was hired to monitor a nearby lake for possible mercury contamination. Several samples were taken at different locations around the lake, including water samples.
What is the mass, in milligrams, of mercury in 1.00 kg lake trout that just meets the Northern American standard of 0.50 ppm Hg?
If equal masses of N2 and H2 (7.00 grams each) are combined to produce ammonia NH3, how many grams of ammonia could be produced at maximum yield.
The size of a diamond is measured in carats. (1 carat=.200 g) The density is 3.51 g/cm3. How many carats is a diamond that measures .
A solution is prepared by adding some solid CaF2 to water and allowing the solid to come to equilibrium with the solution. The equilibrium constant for the reaction below is Kc = 3.9x10-11.
If 141 mL of wet H2 is collected over water at 24°C and a ba?rometric pressure of 738 torr, how many grams of Zn have been consumed.
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