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If the volume of ocean water 5.4*10^20) contains 4.1 percent sodium chloride ("salt") by mass and the density of the water is 1.86 g/mL, calculate the total mass of sodium chloride. (1 ton = 2000 lb, 1 lb = 453.6 g)
Calculate the mass of sodium chloride in kg
Nitrogen is contained in a 300 ml vessel at 400 mm Hg and 10°C. How many grams of nitrogen are in the vessel?
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 milliliters of 0.124 M KOH required to neutralize 46.0 mL of 0.200 M HNO2-?
What is the pOH of a 0.0054 M KOH solution? 2. Rank H3PO4, H2PO4^-, and HPO4^2- in order of increasing acid strength.
For each of the following unbalanced equations calculate how many moles of the second reactant would be required to react completely with 0.413 mole of the first reactant. Al + H20SO4 ----> Al2(SO4)3 + 3H2
When HSCN is added, you expect that the equilibrium will shift to the right and the reaction mixture will become darker (more orange).
A solution is prepared by adding 60.0 mL of 0.060 M HBr to 180.0 mL of 0.70 M HI. Calculate the concentrations of all species in this solution. HBr and HI are both considered strong acids
If Ice melts at 273.15K with delta H fusion equaling 6.01kJ/ mol. An ice cube whose mass is 13.8 kg is dropped in a swimming pool whose temperature is held at 22.5 degrees Celsius.
The value of ?Ho for the reaction below is -126 kJ. The amount of heat that is released by the reaction of 25.0 g of Na2O2 with water is ________kJ. 2Na2O2 (s) + 2 H2O (l) -> 4NaOH + O2 (g)
What is the HCl concentration if 69.7 mL of 0.350 M NaOH is required to titrate a 30.0 mL sample of the acid?
Predict the following Bronsted acid-base reaction at 25 C: HF+CL- -> HCL + F- (a)Predict whether K will be greater or smaller than one? (b)Does delta S prime and delta H prime make a greater contribution to delta G prime?
How many mL of a 0.8 M NaOH(aq) solution are required to make 500 mL of a solution with pH=12.50?
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