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Calculate the mass of water formed by the complete reaction of 572 g of propane (C3H8) with excess oxygen. (Write a balanced uation.) Answer in units of g.
A circular pool of diameter 15.0m is filled to a depth of 500.0cm. Explain what is the volume of water in the pool in m3
A certain enriched sample of uranium contains 92.000% U-238 and 8.000% U-235. What is the average atomic weight of the uranium atoms in this sample? The isotopic masses of U-235 and U-238 are 235.0439 amu and 238.0508 amu, respectively.
a nugget of gold with a mass of 521g is added to 50.0ml of water. the water level rises to a volume of 77.0ml. what is
Problem- A solution contains the Pb2+, Ag+ and Cl- ions. If the concentration of the Pb2+ ions of the solution is [Pb]= .06 and the solution is saturated in PbCl2, what will be the concentration of Ag+ ions in the solution if the solution is also ..
The formula needed to solve this problem. Calculating equilibrium concentrations of all three substances: N2(g) O2(g) (equilibrium arrows) 2NO
if H2 of 50.0 mL and C 2 H 4 of 50.0 mL are permitted to react at the pressure of 1.5 atm, produce C 2 H 6 that has a volume of 50.0 mille litres.. compute the amount of (PV )work done?
Refer to the periodic table and select the symbol of the element that fits each of the following descriptions: a) the group IVA/14 semimetal in the fourth period.
How do you write chemical formulas for: cobalt (II) hydorgen carbonate and sulfur hexafluoride
Consider a two dimensional potential box (where V= 0 if x is between 0 and a and if y is between 0 and b). Show one example that the energy is degernerated
palladium crystallizes with a face-centered cubic structure. it has a density of 12.0 gcm3 a radius of 138 pm and a
A certain weak acid, HA, with a Ka value of 5.61*10 raised to negative 6 is titrated with NaOH. A solution is made by mixing 7.00 mmol of HA and 1.00 mmol of strong base. What is the ph
Calculate the pH at the equivalence point for the titration of 0.250M methylamine (CH3NH2) with 0.250M HCl. Kb of methylamine is 5.0x10^-4,
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