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-- Matter is neither created nor destroyed in a chemical reaction. Thus, the mass of the products of a chemical reaction must be equal to the mass of the starting materials. Formally, this concept is called the law of conservation of mass.
-- A sample of sodium reacts completely with 0.213 of chlorine, forming 351 of sodium chloride. What mass of sodium reacted?
-- When carbon is burned in air, it reacts with oxygen to form carbon dioxide. When 24.0 of carbon were burned in the presence of 75.4 of oxygen, 11.4 of oxygen remained unreacted. What mass of carbon dioxide was produced?
Assuming that you could express and purify both components, describe TWO different experimental methodologies (including SALIENT details) that you would conduct to determine whether the two proteins interact in vivo in a mammalian cell line?
A 739 mL gas sample at STP is compressed to a volume of 244 mL, and the temperature is increased to 24 ? C. What is the new pressure of the gas in Pa? Answer in units of Pa.
Which plot would not have a slope from which the indicated quantity for the reaction A ? Product(s) could be determined
when a stip of zinc metal is placed in a blue aqueous solution of copper (II) sulfate, the surface of the zinc becomes coated with a reddish solid, and the zinc begins to dissolve to form aqueous zinc sulfate. Which of the following statements reg..
Calculate the 1)mls of 100mM of NaOH or HCl 2) grams of disodium phosphate 3) and the mls of water required to make a 200mM phosphate buffer at pH 6.85
What is the pH of the solution in the cathode compartment of the following cell if the measured cell potential
a.)100 mL of 1.00 M HCl solution is titrated with 1.00 M NaOH solution. You added the following quantities of 1.00 M NaOH to the reaction flask. Classify the following conditions based on whether they are before the equivalence point
A compound burns in a bomb calorimeter that contains 2.80 L of water. If the combustion of 0.161 moles of this compound causes the temperature of the water to rise 48.0oC, what is the molar heat of combustion of this compound (dH2O= 1.00g/mL, cH2O..
Write a balanced equation for the reaction of NaCH3COO and HCl. Express your answer as a chemical equation. Identify all of the phases in your answer. Enter no reaction if no precipitate is formed.
Which is the best acid to use in the preparation of a buffer with pH = 9.3?
calculate E when 830.0 g of CH3OH(g) completely reacts at a constant temperature of 300 K and constant pressure of 0.95 atm.
Explain how the yield of reaction can be greatly increased (meaning reactants are more extensively converted into products) by applying Le Chatelier's principle.
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