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If a student weighed a copper wire that was significantly larger than the size recommended in the procedure.
how many hydrogen bonds exist per full turn of the alpha helix? what is the rise in angstrom? can these be different in
metal a was determined to be 95extracted into methylene chloride with dethizone at ph6 when equal volumes of aqueous
element x crystallizes in a body-centered cubic lattice. its atomic mass is 59 amu. the edge length of a unit cell of x
To account for the high electronegativity difference between hydrogen and fluorine, we reassign the orbital sites in HF in order to create an energy ladder that gives us a logical sequence for assigning electrons
What is the pH of a buffer solution if 100.0 mL of the solution is 0.15 M with respect to acetic acid and contains 1.56 g of sodium acetate, CH3COONa.
Predict whether or not a precipitate will form upon mixing 75.0 mL of a NaOH solution with pOH=2.58 with 125.0 mL of a 0.018 M MgCl2 solution. Identify the precipitate, if any. Express as a chemical formula
how are the empirical and molecular formulas of a compound related? what is the empirical formula of compounds ethyne
A buffer that contains 0.347 M of a base, B and 0.483 M of its conjugate acid BH+, has a pH of 8.08. What is the pH after 0.00713 mol of HCl are added to 0.442 L of the solution
analysis. To a 500 mL air sample at 700 torr and 38 deg C, she adds 20.00mL of 0.01017 M aqueous iodine which reacts as follows:
if a 210 mg piece of gold density19.32 bcm3 is hammered into a sheep measuring 2.310 ft. what is the average thickness
Calcium hydroxide, Ca(OH)2, has a solubitlity of 1.85 g/L at 0.0 C. What is the solubility product constant (Ksp) for a saturated solution of Ca(OH)2 at 0.0 C
Which of the following signs on q and w represent a system that decreases in volume and causes the surroundings to get hotter
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