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18.0 mL of HCl was required to titrate 10.0 mL of a 10.0% by mass NaOH solution (density=1.1 g/mL). What is the concentration of NaOH solution?
What are the factors that can influence the rate of a chemical reaction? 2- Why do the rates of most chemical reactions slow down over time?
Ethylene dibromide (EDB) is a liquid that boils at 109C. Its molecular weight is 188g/mol. Calcuate its density as a gas
suppose that 1.08 g of rubbing alcohol c3h8o evaporates from a 75.0 g aluminum block.if the aluminum block is initially
Consider two DNA molecules: one 400 base pairs long, the other 800 base pairs long. Assuming that each is a rigid rod of diameter 25 Å, with a length of 3.4 Å per base pai.
a 45-g piece of ice at 0 degrees C is added to a sample of water at 9 degrees C. All of the ice melts and the temperature of the water decreases to 0 degrees C. How many gram sof water were in the sample?
react with an excess of H3PO4, how many grams of water and how many grams of Ca3(PO4)2 will have on the products side? Also, what type of reaction is it?
2H2O (l)>2H2 (g)+ O2. How many moles of H2O are required to form 1.6L of O2 at a temperature of 325K and a pressure of 0.990 atm
Organic chemistry solution - First question wants the product of certain oxidation reaction of chromic acid with a secondary alcohol and primary alcohol.
An organic compound is quite polar and is thus much more soluble in methanol than in pentane (bp 36 degree C). Why would methanol
How many molecules of carbon dioxide are produced when 129 molecules of acetylene (HCCH) to react in excess oxygen produce carbon dioxide and water.
Two samples of sodium chloride were decomposed into their constituent elements. One sample produced 2.84 g of sodium and 4.37 g of chlorine
Crime scene investigators keep a wide variety of compounds on hand to help with identifying unknown substances they find in the course of their duties
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