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An unknown gas is placed in a 1.500L bulb at a pressure of 356mm Hg and a temperature of 22.5C, and is found to weigh 0.9847g. What is the molecular mass of the gas?
1. calculate the four values of ph poh h and oh- for a 0.100 m of hcl.2. calculate the four values of ph poh h and oh-
At equilibrium the concentration of CO (g) was found to be 0.046 M. Calculate the equilibrium constant for the reaction equation at 527 degrees celcius.
When copper is heated with an excess of sulfur, copper(I) sulfide is formed. In a given experiment, 2.33 g of copper was heated with excess sulfur to yield 1.76 g of copper(I) sulfide. What is the percent yield
In S8 + 12O2-> 8SO3, if 10 grams of sulfur is used, how many grams of sulfur trioxide are produced?
silver has two naturally occurring isotopes. find the percent abundances of 107ag and 109ag given the atomic mass of
The reaction 2NO2(g)-----2NO(g)+O2(g) was studied at 383dgree c and the following data was obtained?
Estimate the heat released when ethene CH2 CH2 reacts with hydrogen gas to give CH3CH3.
Arrange equimolar solutions of the following compounds in the increasing pH (lowest to highest). Explain your answer.
When a 5.8 g serving of cereal burns in the same bomb calorimeter, the temperatrue of the calorimeter increases by 1.92 C. Calculate the fuel value of the cereal in kj/g.
calculate the change in internal energy when 2 moles of CO are converted to 2 moles of CO2 at 1 bar and 25 degrees C
Calculate the amount of heat liberated (in kJ) from 375 g of mercury when it cools from 89.2°C to 15.7°C
what is the length of the unit cell when tantalum (atomic radius = 145 pm) crystallizes in a bcc structure
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