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The bond angles in H3O+ are:?a) slightly less than 109.5ob) exactly 109.5oc) slightly less than 90od) exactly 90oe) exactly 120oc) slightly less than 120o
Plutonium-240 (PU-240) is a byproduct of the nuclear reaction that takes place in a reactor. It takes one thousand years for 10% of a 4.60 g sample to decay. (Nuclear decays are first-order reactions)
When steam (hot water) is passed over iron, hydrogen gas and iron (3) oxide are formed. What weight of steam would be needed to react completely with 100.0g of iron.
Uric acid dissociates with a pKa of 5.80, and can be treated as a simple monoprotic acid in this pH range. Its solubility in urine depends on the relative amount of protonated and unprotonated forms
dry-cleaning solvent (molecular weight = 146.99 g/mol) that contains C, H, and Cl is suspected to be a cancer-causing agent. When a 0.133 g sample was studied by combustion analysis, 0.239 g of CO2 and 0.0323 g of H2O formed. How many moles of eac..
What mass of copper would be produced by the reduction of copper(II) ions during passage of 1 ampere of current through a solution of copper(II) sulfate for 51 minutes?
calculate the concentration in molarity of a NaOH solution if 25.0 ml of the solution are needed to neutralize 17.4 ml of a .312 M HCl solution.
Briefly explain why caffeine will prefer the methylene chloride solvent to the water solvent? draw the structure for all 3 compounds?
Cobalt-60, which undergoes beta decay, has a half life of 5.26 years.
The vapor pressure of chlorine dioxide (ClO2) is 155 Torr at -22.75 ? C and 485 Torr at 0?C. What is the normal boiling point of chlorine dioxide?
How many hours are required for 0.100 mol of electrons to flow through a circuit if the current is 1.00 A
Calculate the overall relative standard deviation, the relative standard deviation of the method, and the relative standard deviation of the sampling process.
refer to the given equation as 4NH3(g) + 7O2(g) = 4NO2(g) + 6H2O(g) How many moles of ammonia will be required to produce 13.8 mol of water.
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