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Calculate the final temperature when a 25.6 gram sample of ice at 0oC is placed into a styrofoam cup containing 115 grams of water at 75.0 oC. Assume that there is no loss or gain of heat from the surroundings.
What would be the formula for the compound sample If a sample of a compound contains 1.36 mol of nitrogen atoms and 2.72 mol of oxygen atoms?
if 50.0 mL of 10.0 degrees ceclius water is added to 40.0 mL of 65.0 degrees celcius, calculate the final temperature of the mixture assuming no heat is lost to its surroundings,
Given chemical reaction is used to produce electricity in lead storage battery that used in automobiles generally.
A 184-mg sample of Na2CO3 is dissolved in H2O to give 3.00L of solution. What is the concentration of Na+ in parts per million (ppm)?
If you have 330 ml of water at 25 degrees and add 110 ml of water at 95 degrees, What is the final temperature of the mixture.
Hydrogen is produced when methane(CH4) reacts with water. The other product is CO2. Using 80.0g of methane and 16.3g of water, how many liters of H2 can be produced at STP? what is the limiting reactant?
You have a gas occupying 75L at 800 torr and 315K. What is the volume if the pressure is decreased to 600 torr and the temp is changed to 127 C?
A gas sample containing 1.65 mol at 25°C exerts a pressure of 413 torr. Some gas is added to the same container, and the temperature is increased to 50.°C.
Calculate the mass of sugar (C12H22O11) that must be dissolved in 700 g of water to prepare 20% sugar solution
Calculate how the amount of AgCl(s )will change when the equilibrium is disturbed by Adding AgNO 3
what products may have been formed during the combustion of the gas?
How many grams of dry NH4Cl need to be added to 2.10 L of a 0.500 M solution of ammonia, NH3 , to prepare a buffer solution that has a pH of 8.76? Kb for ammonia is 1.8*10 ^-5.
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