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A drug with the molecular formula C25H38O5 has 2.14 x 10^23 carbon atoms. What is the mass of the sample? (MW: 418.57 g/mol)
A.) 2.12 x 10^-2 gB.) 3.72 gC.) 149 gD.) 5.95 g
What is the entropy change for freezing 4.25 g of C2H5OH at 158.7 K? H = -4600 J/mol. Answer in units of J/K.
Suppose that you have 1.55grams of nitroglycerin( also known as nitroglycerine, trinitroglycerin, trinitroglycerine) in a 603.0 mili litres of steel container at 20 degree celsius and one atm pressure.
if you had excess chlorine how many moles of of aluminum chloride could be produced from 17 grams of aluminum
The results of this test demonstrate that the compound is 83.24% C and 16.76% H with a molar mass of 72 g/mole. What is the molecular formula for this compound?
A sample of gas at 47°C and 1.03 atm occupies a volume of 2.20 L. What volume would this gas occupy at 110.°C and 0.795 atm?
Is the Br2 a gas, and what is the net ionic equation for this reaction?
For each of the following, calculate the concentration of Tris, Tris-H+ and the pH of the solution in each of the following solutions.
What is the Volume of 1.05 mol of Benzene (C6H6) at 20.7 degrees C. The density of Benzene is 0.879 g/mL.
A sample of neon is collected at 2.7atm and 12.0C.It has a volume of 2.25L. what would be the volume of this gas at STP.
What is the mass of air in the cylinder? What is the temperature in the cylinder when the volume reaches 4.00 in3?
Calculate the standard reaction enthalpy for the reaction above (as written) using the following data: N2(g) + O2(g) -→ 2 NO(g)
How many moles of nitrate ions are present in a sample that contains 4.82 moles of chromium(III) nitrate, Cr(NO3)3
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