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1. A balloon holds 29.1 kg of helium. What is the volume of the balloon if the pressure is 1.23 atm and the temperature is 22 °C?
2. A 1.71 mol sample of nitrogen gas occupies a volume of ______ L at STP.
A reaction has a rate constant of 1.27×10^4/s at 29 degrees C and 0.234/s at 79 degrees C. What is the value of the rate constant at 18
How many grams of methane gas (CH4) are in a 15.8 liter sample at 1.2 atmospheres and 27°C? Show all work used to solve this problem.
Assign oxidation numbers to all the elementals in each of the following: a)PO3^2- b)NH4^+ c)Fe(OH)2 d)HNO3 e)Cr2O7^2-
what fraction of this side chain is positively charged and what fraction is neutral at pH 7.2?
Calculate the Ka for this weak acid. If 10.00mL of this mixture was then diluted with distilled water to a total volume of 100.00mL, what would be the new solution pH?
State a Lewis structure that obeys the octet rule for each of the following ions. Allocate formal charges to each atom.
if you started a ride with ice packs that held 1600g of frozen water at 0 degree celius, and the temperature of the water at the end of the ride is 32 degree celius, How many calories of heat energy were absorb
When DMPT is treated with base, and then added to a solution of [PtCl2(K^2- dppe)], compound A forms and has the formula [PtCl(DMPT)(K^2- dppe)].
Consider the reaction CH4(g) + X2(g) → CH3X(g) + HX(g) , where X is a halogen-like atom (Group 7A). Calculate ?H for this reaction if bond energy tables give the following values
Acyl chloride can hydrolyze in water spontaneously to carboxylic acid. In the interfacial polymerization water is used as one of the solvent, why you don't have to worry about the hydrolysis of sebacoyl chloride in this action
The student then titrated 25ml of the same buffer with 0.1115M NaOH. The observed titration curve is shown before. what is the concentration of the weak acid in the buffer?
Magnesium hydroxide is only very slightly soluble in water. The reaction by which it goes into solution is: Mg(OH)_2 (s) Mg^2+ (aq) +2 OH- (aq)
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