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Consider two aqueous solutions, A and B (which contain different solutes). Is it possible for solution A to have a greater concentration than solution B in terms of mass percent, but a smaller concentration in terms of molarity? If no, explain why not. If yes, provide an example. What if the solutions contained the same solute?
what volume will 500 mL of gas at 20 C and a pressure of 420 mm Hg occupy if the temperature is reduced to -80 C and the pressure increased to 650mm Hg
a 21 l tank contains a gas under a pressure of 367 atm. what volume would the gas occupy at the same temperature at 630
A certain mass of oxygen was collected over water when potassium chlorate was decomposed by heating. The volume of the oxygen sample collected was 720. mL at 25.0 oC and a barometric pressure of 755 torr.
sulfur reacts with oxygen to produce sulfur dioxide but only if the high activation energy is supplied. which condition
along with the weight of sodium acetate (4.01g) and the volume of acetic acid used (10mL) to prepare the buffer, the expected pH of it was 5.43. What is the expected pH of buffer plus added HCl?
Calculate how many joules are needed to heat and calculate the theoretical volumes of 1.0 M Tris base?
imagine that you have a 6.50 l gas tank and a 4.50 l gas tank. you need to fill one tank with oxygen and the other with
Identify the group of elements that corresponds to each of the following generalized electron configurations and indicate the number of unpaired electrons for each:
Which satisfy the octet rule and which do not? PS3, SO2, SO3, NO3-1, CO3-2, PCl5
Balance the following skeleton reaction and include states of all reactants and products in your balanced equation.
A 0.9092-g sample of wheat flour was analyzed by the Kjeldahl procedure. The ammonia formed was distilled into 50.00mL of 0.05063 M HCl; a 7.46-mL back-titration with 0.04917 M NaOH was required. Calculate the percentage of protein in the flour.
calculate the pH of the buffer after the addition of 0.15 mL of 6M HCl based on the known value of Ka for acetic acid
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