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a sample of oxygen occupies 178 mL in a cylinder shown at a barometric pressure of 734 torr and 25 degrees Celcius. If the piston is pushed in and compresses the oxygen sample to 134 mL, what is the pressure (in torr) of the gas?
The density of benzene at 15C is 0.8787 g/mL. Calculate the mass of 0.1500 L of benzene at this temperature.
calculate the equivanent weight of the acid. (B) How many moles of protons were titrated? (C) How many moles of H3PO4 were titrated? (D) How many grams of H3PO4 were titrated?
What is the half life of the decomposition of A at 60C? e)If the concentration of a is found to be 2.78 x 10^-3 mole/L at t= 1.80 s and 60C, what is the initial concentration of a at 60C?
You are given some reactions as a. Cl2(aq) + 2NaI(aq)= I2(aq) + 2 NaCl(aq), b. Br2(l) + 2K(S)=2KBr(s), c. Pbs( s) + 4H2O2(aq)= PbSO4(s) + 4H2O(l) you just need to Indicate which element is reduced and which is oxidized in the given equations?
Alfred bought a new graduated cylinder for his chemistry class. It holds 416 milliliters of liquid. If the cylinder has a radius of 4 cm, then how tall is the cylinder?
A compound containing only carbon, hydrogen, and oxygen is subjected to elemental analysis. Upon complete combustion, a 0.9294-g sample of the compound
What is the mole fraction of ethanol in a solution made from mixing 299 grams of ethanol (C2H5OH) and 360 grams of water? (Round your answer to 2 places after the decimal.)
Calculate the molar mass of the biomolecule. For carbon tetrachloride, the boiling point constant is 5.03°C · kg/mol, and the boiling point of pure carbon tetrachloride is 76.50°C.
Determine how many moles of each Na+ and Cl- are in 1.00L of the saline solution?
Glacial acetic acid is mixed with liquid methanol (nonaqueous). What type of organic reaction can this be characterized as?
a saline solution contains 150 mEq/L each of Na+ and Cl- how many moles of Na+ and Cl- are in 2.50L of the solution
calculate how many moles of KIO3 are needed to make 50 ml of 0.20 M solution?
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