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When a load of 4 N is hanging on a spring, it stretches 0.5 m. If you cut the spring in half and 4 N is hanging on it again,
(a) How much will the spring stretch?
(b) What is the ratio of the shortened spring period to the original one?
Explain what is the percent purity of a sample of impure H2C2O4•2H2O (oxalic acid dehydrate, 126.07 g/mol) if 0.6299 grams of this material require a titration with 28.35mL of a potassium permanganate solution
explain the basis of your decision and note if the bond(s) formed are ionic or covalent. a.) sodium and fluorine b.) nitrogen and hydrogen c.) silicon and oxygen d.) chlorine and bromine (please explain in details.)
A beaker with 185 mL of an acetic acid buffer with a pH of 5.00 is sitting on a benchtop. The total molarity of acid and conjugate base in this buffer is 0.100 M. A student adds 6.70 mL of a 0.440 M HCl solution to the beaker.
Suppose 532 mL of neon gas at 20C and 1.04 atmospheres and 376 mL of SF6 gas at 20C and 0.97 atmospheres are put into a 275-mL flask. If the temperature remains constant, calculate the partial pressure, in atmospheres, of the SF6 gas in the mixtur..
Calculate the vapor pressure of a solution made by dissolving 109 grams of glucose
For each of the pairs of elements below give the formula for the simplest compound to be formed from them and explain the basis of your decision and note if the bond
A solution of NH4Cl is prepared and its molarity is 1.00 x 10-3; what is the pH of this solution. Show all work.
We are titrating 27.00 mL of 0.2501 M hypobromous acid (HOBr, Ka = 2.000x10?9) with 0.5200 M LiOH. What is the pH at the equivalence point
What is the molar mass of cholesterol if 0.00105 mol has a mass of 0.106g
In which substance does the molecules packs more efficiently? In which substance do the molecules pack more efficiently?
In an experiment using 2 nM of fumarase, what is Vmax? What is the catalytic efficiency of fumarase
If a buffer is made up to be 1.0M in acetic acid and 1.0 M in sodium acetate, predict how much acid will be required to change the pH of 100mL of the buffer by 0.1 pH units.
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