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predict whether an aqueous solution of ammonium bicarbonate would be acidic, basic or netural. explain your answer, and support it with real data.
When determining the number of milliliters of mercuring with the density of 13.6 g/mL and having a mass of 501 g, do you divide 13.6 by 501?
What would the potential of a standard hydrogen (S.H.E.) electrode be if it was under the following conditions?
Acetylsalicylic acid (aspirin), HC9H7O4, is the most widely used pain reliever and fever reducer in the world. Find the pH of 0.018 M aqueous aspirin at body temperature (Ka at 37°C = 3.6 10-4).
Identify the two important classes of catalysts. Analyze the chemical reactions that take place when a biological catalyst combines with a reactant (substrate) to form an unstable intermediate.
The reaction of 2.5g of Al with 2.5g oxygen (actually) produces 3.5g of Al oxide. Calculate the % yield of aluminium oxide.
What is the density (in grams per liter) of a gas mixture that contains 26.0 % F_2 and 74.0 % He by volume at 743 mm Hg and 28.5 C?
Describe the bonding in NCl- using a molecular orbital description. Assume the molecular orbital levels are ordered as in N2. What is the NCl- bond order? How any unpaired electrons are present?
A flask contains 0.250 of liquid bromine, . Determine the number of bromine molecules present in the flask.
In a second experiment, I(electric current) broke down a sample of H 2 O into 1.45 grams of hydrogen and 11.51 grams oxygen. Are these results reliable with the law of exact extent?
The following heats of formation are used to find the change in enthalpy for the formation of tin chloride in the following reaction Sn (s) + 2Cl2(g) --> SnCl4(l).
what is the ph of a solution that is 0.100 M in HCl and also 0.125 M in HC2H3O2? What is the concentration of the acetate ion in this solution?
The mass of the isotope, I-129, is 128.905 amu while the atomic mass of the contaminated iodine sample is 127.1982 amu. What is the mass of the contaminant?
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