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An unknown gas effuses through a porous barrier at a rate that is 0.752 times the rate of Ar (g) under the same conditions. Which of the following is the unknown gas?
How many moles of H+ (H3O+) are produced in 40.0 m of 0.025 M HCL?
What mass of carbon monoxide in grams is present in a room measuring 10.5 × 11.0 × 20.5 ft?
What type of forces must be overcome when solid I2 is dissolved in dissolves in methanol, CH3OH? What type of forces must be disrupted between methanol molecules when I2 is dissolved?
Calculate the number of moles of H+ and OH- initially present the number of moles of h2O produced in the response regulation reaction.
A student mixed 50.0 mL of 0.50 M H2SO4 (aq) at 18.5 degrees C with 100 mL of 0.50 M NaOH (aq) at the same temperature. After the reaction was completed, the temperature rose to 22.0 degrees C. What was the heat of reaction? (Assuming the densitie..
what weigh tof CaCO3 is required to completely react 135 ml of a 0.665M solution. Must show set up.
What is the smallest number of packages of buns, packages of patties, and jars of pickles, respectively? Express your answer as three integers separated by commas.
how many moles of N atoms are there in .882 moles of (NH2)2CO?
7.04 g of CuNO3 is dissolved in water to make a 0.300 M solution. What is the volume of the solution.
A mass of solid aluminum is at its melting point. what is the maximum mass of this sample that can be melted by 120 kJ of heat? ( Cp=0.900J/gc ; Hfus= 35.7 KJ/g
The specific heat of aluminum is 0.21 cal g°C. How much heat is released when a 10 gram piece of aluminum foil is taken out of the oven and cools from 50 to 10 °C?
10.0 L gas cylinder is filled with 5.20 moles of gas. The tank is stored at 1 C. What is the pressure in the tank?
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