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Calculate the molar solubility of CaCO3 ( Ksp = 4.5*10-9) neglecting the acid-base character of the carbonate ion
Write a balanced chemical equation, including physical state symbols, for the combustion of gaseous methan into gaseous
Find the Diffusivity of Ammonia gas(A) in a mixture of nitrogen(B) and hydrogen(C). D(AB)=3.28x10^(-5)m2/s and D(AC)=1.093x10^(-4)m2/s.
How many grams of CH4 is needed to produce 33.5 g CHCl3.
Write the formulas for each of the following ions and compounds: (a) tetrahydroxozincate(ll) (b) pentaaquachlorochromium
The mass of the sample before heating was 3.327g and after heating the mass was 2.432g. What is the percent composition of sodium carbonate in the original mixture?
Metal X was plated from a solution containing cations of X. The passage of 48.25 C deposited 31 mg of X on the cathode. What is the mass of X (in grams) per mole of electrons.
1. How many CO2 molecules are needed to produce 1 glucose molecule (in photosynthesis)? 2. How many moles of oxygen atoms are in 1 mole of calcium phosphate?
At 0.0oC, if the volume of air is 3.4 mL and the pressure of the atmosphere that day is 695 mmHg, what is the number of moles of air?
Differences in boiling points, Rationalize the difference in boiling point between the members of the following pairs of substances:
A solution is prepared by mixing 85.0 mL of 5.00 M HCl and 25.0 mL of 8.00 M HNO3. Water is then added until the final volume is 1.00 L. Calculate [H+], [OH -], and the pH for this solution.
A goose is flying south for the winter at a constant speed. Keep in mind that one mile is 1.61 , and one pound is 454 .The goose has a mass of 20.1
If 28mL of 7.0M Sulphuric acid(H2SO4) was spilled, then determine what is the minimum mass of NaHCO3 (Sodium bicarbonate or sodium hydrogen carbonate)
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