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When Hcl(aq) and NaHCO3 (aq) are mixed together, a reaction takes place in which a gas is one of the products. The gas had a d=1.81 g/L at 1.00 atm and 23 degrees C. What is the molar mass and identity of the gas?
83 mL of ethanol with a density of 0.79 g/cm3 was dissolved in to water making 220.00 mL of solution. what is the concentration of ethanol.
A solution contains 0.22 M CaCl2 and 0.12 M MgCl2. What concentration of hydroxide ions would be required to separate the magnesium as Mg(OH)2 without precipitating the calcium as Ca(OH)2?
what would the magnitude of q need to be to give the experimental dipole moment? Express your answer as q divided by the proton charge. In other words, what fraction of a full proton charge is the charge magnitude of the ion pair?
how many moles of ethylene glycol should be added to the radiator to lower the freezing point of the water from 0 degrees celcius to -18 degrees celcius?
A 494 mL sample of hydrogen gas was collected over water at 25°C and a pressure of 753 torr. If the pressure of water vapor is 24.0 torr at 25.0°C, what mass of hydrogen gas (g) was collected? Do not enter units with your answer.
A certain acid HX is dissolved in water to make a 0.10M solution. At equilibrium, the concentration of X^- ions is 1.0 x 10^-5 M. The Pka of HX is approximately?
consider the reaction of 215ml 2.15M nitric acid with 26.0 g of solid iron(2) carbonate for the following questions 1. write the balanced chemical equation for this reaction 2. which reactant is the limiting reactnat?
Household vinegar is 5.0% acetic acid (CH3COOH). IF you have 240.0 mL of vinegar, how many molecules of CH3COOH would there be?
Calculate the molar mass of the unknown gas. (remember that the faster the rate of effusion, the shorter the time required for effusion of 1.0L
What is the basis for distillation techniques used to separate two or more components and If so, this would give me the four apparatus requested.
container it was heated to 800K, and at equilibrium the pressure of CO ws found to be .497 atm. Calculate the equilibrium constant Kp for the reaction.
A portable electric water heater transfers 255 watts (W) of power to 5.5 L of water, where 1 W = 1 J/s. How much time (in minutes) will it take to heat the 5.5 L of water from 24 degrees C to 41 degress C? (Assume that the water has a density of 1..
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