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Calculate the volume (in dm3) of 1.50 mol.dm-3 H2SO4 necessary to react completely with 2.000 g CuO according to the equation below.
CuO + H2SO4 → CuSO4 + H2O
What are the Importance of organic and inorganic substances in our body?
A mixture of mercurous chloride (MW 472.09) and mercurous bromide (MW 560.99) weighs 1.50 g. the mixture is quantitatively reduced to mercury metal (MW 200.59) which weighs 1.50 g. Calculate the % mercurous chloride and mercurous bromide in the original mixture. Show your solution.
The density of a 15.00% by mass aqueous solution of acetic acid, CH3COOH, is 1.087 g/mL. What is the molarity, the molality, and the mole fraction of each component? Show your solution.
Calculate the Gravimetric factor of the following. Show your Solution.
A. Al in Al2O3
B. Na in Na2C2O4
C. Cr2O3 in PbCrO4
D. K in K2PtCl6
E. Cl in AgCl
Mercury freezes at -40oC. How many Joules of heat energy would you need to heat 2.0 g of Hg(l) from the freezing point to the boiling point (356.6oC)? The specific heat of mercury is 0.14 J/(g*oC).
How much work was done when 46 kJ of energy was spent compressing a gas it released 28 kJ of heat?
Two aqueous solutions denoted S1 and S2 are prepared in the laboratory, solution S1 contains 37g of copper sulfate dissolved in 100 ml of water and solution S2 contains 50 g of the same solute dissolved in 200 ml of water.
1- Show that the concentration (C) of S1 is 370 g\l and that of S2 is 250 g L.
2- Specify which of the two solutions is the most concentrated and which is the most dilute.
3- Explain how the S1 solution can be made more dilute.
4- Suggest a method to increase the concentration of S2.
When aluminum reacts with hydrochloric acid, HCl, both aluminum chloride and hydrogen gas are produced. If 108 grams of aluminum is reacted, what volume of gas may be collected at STP?
What is the molarity of a 1.5 L solution containing 80.02g of sodium hydroxide.
