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Determine whether each of the given amounts of solid will completely dissolve in the given amount of water at the indicated temperature.
Check all that apply.
15.0 g KClO3 in 115 g of water at 25 ?C
50.0 g Pb(NO3)2 in 95.0 g of water at 10 ?C
45.0 g CaCl2 in 105 g of water at 5
ammonium hydrogen phosphate is made from reacting phosphoric acid with ammonia. if 10.00g of ammonia react, how many moles of fertilizer will be produced?
A 64gram piece of ice at 0 celsius is added to a sample of water at 9 celsius. All of the ice melts and the temperature of the water decreases to 0 celsius. how many grams of water were in the sample?
Calculate the density and radius of the ball bearing (volume of a sphere of radius r is 4/3pi r^3).
methyl alcohol (CH3OH) is made by reacting carbon dioxide with H2. Starting with 2.5g of H2 and 30.0 L of Co, what mass of methyl alcohol could be produced at STP.
A typical commercial-grade phosphoric acid solution is 75% phosphoric acid by mass, and has a density of 1.57 grams per milliliter. What are the molarity and molality of H3PO4 in this acid?
The rate constant increases by a factor of 2.00 when the temperature is increased from 80 C to 115 C. estimate the arrhenius activation energy.
The elements X and Y form a compound that is 33.33% X and 66.67% Y by mass. The atomic mass of X is twice that of Y.What is the empirical formula of the compound?
Sn2 requires a strong nucleophile while E2 requires a strong base. But relatively compared if you have a very strong base the E2 is preferred. Why is it so?
if each reactant molecule in the above image represents 0.0157 mol and the reaction yields is 89%, how many grams of Si-containing product form?
Calculate the pH of a solution prepared by dissolving .370 mol (HCO2H) and .230 mol (NaCO2H) in H2O sufficent to yeild 1.00L of solution. Ka=1.77x10^-4
Thus, as long as the concentrations of HA(aq) and A-(aq) are not consumed, the pH change is minimal compared to addition to a non-buffer solution. Why is the buffer most effective when pH = pKa?
What is the pH of a solution which is 0.021 M in weak base and 0.039 M in the conjugate weak acid (Ka = 7.1 Ã- 10â€"6)? pH=?
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