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Suppose I gave you a balloon that contains 7.2 L of gas. If I tell you that originally, the balloon's volume was 1.4 L and that it contained 2.3 moles of gas, how many moles did I add to it before giving it to you?
Three manufacturers are producing carbonated bottled water. One company introduces carbonate by bubbling carbon dioxide into water until CT=10-3 M (equivalent to adding "H2CO3*" until CT = 1 x 10-3 M), a second adds sodium bicarbonate (NaHCO3) unt..
Titration of 25.00 mL of HCl requires 15.62 mL of 0.250 M Ba(OH)2. Determine the concentration of the HCl solution
When might BTB be a better choice than pH paper - Write the chemical equation of mixing hydrogen nitrate (HNO3) with water.
What would the mass of 1 Liter (1000 mL or 1000 cm3) of your element be? With equations (my element is calcium)
what is the structure of A 1:1 molar ratio of methane and oxygen, and calculate the oxygen balance
Platinum (Pt), with a mass number of 190 and an atomic number of 78, decays by beta emission. Identify the product of the nuclear reaction by providing its atomic symbol, mass number and atomic number.
Describe the structural and sequence elements that are common to all tRNA molecules, addressing the function of each of the elements.
What is the concentration of the sodium ion (in M) in a solution of 0.681 M sodium chloride
Calculate the molar solubility of AgCl in a solution made by dissolving 10.0 g of CaCl2 in 6.00 L of solution
if you have a five carbon molecule that has an aldehyde group on one end and an oh group on the other and you put it
Hydrogen and oxygen react vigorously to form water. If 120 hydrogen molecules are reacted with 200 oxygen molecules in a closed container define how many hydrogen, oxygen and water molecules will remain after the reaction is complete
A pure gas sample at room temperature (25 C) has an average molecular speed of 682 m/s. What is the identity of the gas.
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