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If 100 g of Mg reacts with excess HCl, what volume of hydrogen gas at 25 degrees C and 1.0 atm pressure will be produced? [balanced equation]
a) 100 L
b) 25 L
c) 22.4 L
d) 11.2 L
e) 4.12 L
If you compare two acids of the same concentration with different Ka values. Which acid solution should have the lower pH value
Given the concentration of organic carbon in a soil sample and the soils bulk density, be able to calculate the mass of organic carbon
When 0.234 g of the hydrate Cr2(SO4)3•xH2O is heated, 0.128 grams of anhydrous Cr2(SO4)3 remains. What is the value of x in the formula for the hydrate
The rate at which a metal alloy oxidizes in an oxygen containing atmoshphere is a type of the Arrhenius equation (rate(k)=Ce^(-Q/RT)). For example, the rate og oxidation of a magnesium alloy is represented by a rate constant k.
A procedure called coulogravimetric analysis combines a weight determination with a measurement of the quantity of electricity in a controlled-potential electrolysis to analyze bromide-chloride mixtures
The energy of the electron in the lowest level of the hydrogen atom (n=1) is -2.179×10-18 J. What is the energy of the electron in level n=6
A phase change occurs at 298 K and deltaS system - -13.5 J/K. What is the change in the entropy of the surroundings?
Calculate the mass of sodium chloride that will result from the addition of 25.0g of sodium hydroxide to 0.140L of 4.00M hydrochloric acid
Given the following equations solve for concentration of urea in blood out (CBout) and concentration of urea in dialysate out (CDout)
Calculate how much energy in the form of heat is available from 100mL of this mixture and compare it with the amount from pure gasoline.
Calculate the molar mass of the unknown gas. Remember that the faster the rate of effusion, the shorter the time required for effusion; that is, rate and time are inversely proportional.
which 1.0 m acid solution has the largest concentration of hydronium
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