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A chemist prepares 460 mL of a 2.0 M solution of K2Cr2O7 in water. A week later, the chemist wants to use the solution, but the stopper has been left off the flask and 35 mL of water has evaporated. What is the new molarity of the solution? (assume 1g of K2Cr2O7 = 1 ml of K2Cr2O7).
How many grams of glucose are in 100. rm mL of the final solution?
Liquid methanol (CH3OH) can be used as an alternative fuel in pickup and SUV engines. An industrial method for preparing it uses the catalytic hydrogenation of carbon monoxide
What is the density of a block of marble that occupies 350 cm3 and has a mass of 660 g?Answer in units of g/cm
Explain the type of nonrenewable energy resource used and their short-term and long-term effects on the environment
Calculate the molar solubility of silver thiocyanate, AgSCN, in pure water and in water containing 0.010 M NaSCN.
Fe 2+(aq) + 6CN- (aq) -->/
what is the partial pressure of carbon dioxide at the end of the reaction. What is the mole fraction of carbon dioxide at the end of the reaction
A certain brand of antacid has a dosage that contain 400 mg Mg(OH)2. How many mmoles of HCl can be neutralized by one dose of this antacid?
If chlorine gas (Cl2) is added at a dose of 2 mg/L, estimate the quantity (pounds) of chlorine that must be added to treat 15,000,000 gallons of water
What mass of solid sodium formate (of MW 68.01) must be added to 140 mL of 0.3 mol/L formic acid (HCOOH) to make a buffer solution having a pH of 3.77? Ka = 0.00018 for HCOOH.
Assume that you have carried out a radical chlorination reaction on (R)-2- chloropentane and have isolated (in low yield) 2,4-dichloropentane.
What volume of a 15% by mass NaOH, which its density is 1.116g/mL, should be used to make 5.40L of an NaOH solution with a pH of 10.2
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