Other Chemistry Answers

If a cube of material is subdivided into 1000 smaller cubes of equal size, the surface area of the smaller cubes will be what fraction of the original? How many times greater than the original will the total surface area of the cube be?

The following surface tension were mesaured for the aqueous solutions of the nonionic
surfatant CH3(CH2)9(OCH2CH2)5OH at 25oC.

Determine the critical micelle concentration (cmc) and the area occupied by each surfactant molecule at the critical micelle concentration (cmc).

Prove that 1ppm = 1mg/L

The concentrations of arsenic (As) and selenium (Se) in a drinking water well were 2.0 and 3.8 ppb. (a) Convert arsenic concentration into ppm and mg/L, (b) Convert selenium concentration into molarity (M) and micro-molarity (mM), (c) Have the concentrations exceeded the maximum contaminant level (MCL) of 50 mg/L for both elements? The atomic weight of Se is 79.

How many grams of ethane gas (C2H6) are in a 12.7 liter sample at 1.6 atmospheres and 24°C? Show all work used to solve this problem.

what is the mass of sodium carbonate (eq.wt id na2co3=53 ) which should react with 25 ml of 1N hcl?

Will a precipitate form when 20.0 mL of Pb(NO3)2 with a concentration of 2.50 x 10^-4 mol/L is mixed with 45.0 mL of CaCl2 with a concentration of 1.25 x 10^-3 mol/L?

What mass of Mg(OH)2 will dissolve in 1.0 L of 0.050 mol/L solution of MgSO4?
Ksp = 5.6 x 10^-12

Calculate the Ksp of Ag2CrO4. Make sure your Ksp has the correct number of significant digits.

Questions a, g and h in the questions on the following link:
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