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A large piece of iron with a volume of 0.25 m3 is lowered into a lake by means of a rope until it is just completely submerged. It is found that the support on the rope is less than when the iron is in air. How does the support vary as the iron is lowered further?
a solution is prepared by dissolving 0.11 mol of acetic acid and 0.11 mol of ammonium chloride in enough water to make
A separate experiment is conducted in which 4.82 x 10-5 M CaI2(aq) is added to a solid solution of PbI2 at 20 oC. Qualify how the molar solubility changes
Convert 45.3 inches to millimeters
Problem- Gastric juice is made up of substances secreted from parietal cells, chief cells, and mucous-secreting cells. The cells secrete HCl, proteolytic enzyme zymogens, mucin, and intrinsic factor.
The Kjeldahl was used to analyze 322 ul of a solution containing 54.2 mg protein/ ml. The liberated NH3 was collected in 7.00 ml of 0.04325 M HCl. The remaining acid required 7.62 ml of 0.01221 M NaOH for complete titration. What is the weight per..
What mass of sodium chloride would need to be added to the blood to bring the sodium ion concentration up to 0.138 M, assuming no change in blood volume?
Which of the following factors does not affect the velocity of an enzyme catalyzed reaction
a metal object with a mass of 19g is heated to 96 degree celcious then transferred to acalorimeter containing 75g of
A homeowner uses 4.00 x 10^3 m^3 of natural gas in a year to heat a home. Assume that natural gas is all methane, CH4, and that methane is a perfect gas for the conditions of this problem, which are 1.00 atm and 20 C. What is the mass of gas used
For a given reaction, the reaction forms predominantly products at equilibrium (i.e. it essentially goes to completion). Which of the following represents a reasonable value for K
Consider the reaction between 15.0 mL of a 1.00 M aqueous solution of AgNO3 and 10.0 mL of a 1.00 M aqueous solution of K2CrO4. When these react, a precipitate is observed. What is present in solution after the reaction is complete? Note: the sol..
What volumes of 0.150 M acetic acid and 0.065 M NaOH solutions must be mixed to prepare 1.00L of a buffer solution of pH 4.50 at 25C.(Show all work for 5 stars)
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