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If a 1.8 mole sample of a compound weighs 195 g and is found to be 11.18% H and 88.82% C. explain what is the molecular formula for the compound?
Aluminum reacts with oxygen to yield aluminum oxide. If 5.0g of AL reacts with 4.45g of oxygen what is the empirical formula of aluminum oxide
Calculate the concentration of the acid solution after all teh metal has reacted. Assume that the volume remains unchanged.
What is the purpose of distilling two mixtures whose boiling points are very close.
Assuming a BOD reaction rate constant of -0.4/day, what will be the the BOD remaining in the stream after the combined flow has traveled for 2 days? Remaining BOD after 2 days = [BOD] mg/L
A mixture of Na2CO3 and NaHCO3 has a mass of 81.1g. it is dissolved in 1.00L of water and the pH is found to be 9.92. what is the mass NaHCO3 in the mixture
A sealed tube contains 1.66 atm PCl5 at 500 K. The PCl5 decomposes until equilibrium is established. The equilibrium pressure in the tube is 2.28 atm. Calculate Kp for this equilibrium.
which of the following is the correct chemical formula for a formula unit of aliminum
Diamonds are measured in carats, where 1 carat=0.200 g. The density of diamond is 3.51 g/cm^3. What is the volume of a 2.50-carat diamond
The binary hydrogen compounds of the Group 4A elements and their boiling points are: CH4, -162 deg C; SiH4, -112 deg C; GeH4, -88 deg C; and SnH4, -52 deg C. Explain the increase in boiling points from CH4 to SnH4.
ch3br aq oh- aq -gt ch3oh aq br- aq . the reaction is first order in each reactant. a write the rate law. b how does
multiple choice questions in radioactive decay.1.an alpha alpha particle is essentially a
Calculate the solubility of Ni(OH)2 in a) distilled water and b) at pH of 4.0. Justify your answer. I know I need to use a mass balance ans the reaction for disolution is
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