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How many moles of NiCl can be formed in the reaction of 5.00 mol of Ni and 10.0 mol of HCl?
To treat a burn on your hand, you decide to place an ice cube on the burned skin. The mass of the ice cube is 17.3 g, and its initial temperature is -14.4 °C.
2A yields 3B; ?H -50 kJ. If 9 moles of B are formed during this reaction, what was the enthalpy change
A mixture of 4.50 g of He, 12.0 g of Ne, and 29.0 g of Kr is placed in a cylinder at STP. Calculate the partial pressure of each gas.
How many grams of water can be cooled from 34°C to 26°C by the evaporation of 81 g of water? (The heat of vaporization of water in this temperature range is 2.4 kJ/g. The specific heat of water is 4.18 J/g·K.)
What is the molar mass of the compound? Express your answer to two significant figures and include the appropriate units
suppose you have 10 ml of 0.10m sucrose solution. you add 90 ml of water to the solution.Do the number of sucrose change? Does the molarity change?
A compound contains only carbon and nitrogen and is 46.2% carbon by mass. A gaseous sample of the compound has a density of 2.05 g/L at 927 torr and 105 °C
Select all of the correct statements about the relative acid strengths of pairs of acids from the choices below. HCl is a stronger acid than H2S because Cl is more electronegative than S.
The entropy increase after mixing 2 moles of oxygen 1 mole of nitrogen, which were prepared at the same pressure and temperature, is (in J/K). (Pretend oxygen and nitrogen are ideal gases)
Triethylene glycol, the solvent for your first reaction, and heavy mineral oil are both high boiling, high molecular weight solvents.
Compare the chemical structure of the nylon polymer that has been prepared to the polypeptide trimer of glycine, the simplest of the naturally occurring amino acids
a solution is prepared by dissolving 4.21 g of a nonelectrolyte in 50.0 g of water. If the boiling point increases by 0.203 C what is the molar mass of the solute? The boiling point elevation constant for water is 0.512 C/.
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