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Please guide me and help me understand the "Combined Gas Law"
1) A 350 ml sample of helium gas is collected at 25 degrees C. What volume would this gas occupy at STP?
2) A sample of neon is collected at 2.7 atm and 12.0 degrees C. It has a volume of 2.25 L. What would be the volume of this gas at STP?
3) A sample of argon has a volume of 205 cm3 when its temperature is -44.0 degrees C and its pressure is 712 kPa. What would be the volume of the argon at STP?
4) A student collects a 3.00 x 102 cm3 sample of hydrogen at 22.0 degrees C and 91.9 kPa. What volume would the hydrogen occupy at STP?
Six moles of hydrogen gas at 0 degrees C is forced into a steel cylinder with a volume of 200mL. What is the pressure of this gas
Put the species below in the order of strongest to weakest nitrogen-oxygen bond. Including Lewis structures and formal charges.
Calculate the pH for the titration of 20mL of .75M formic acid (HCOOH) Ka(HCOOH) = 1.8e-4, with .2M KOH. a) Before any acid is added
At equilibrium, the concentration of [H2]= 0.6 M. What is the EQUILIBRIUM concentration for [H2],[I2]and [HI]? H2(g) + I2(g) 2 HI(g) [HI] =
A 25.0-mL sample of 0.150 M butanoic acid is titrated with a 0.150 M NaOH solution. What is the pH before any base is added? The Ka of butanoic acid is 1.5 x 10-5.
Aqueous sulfuric acid reacts with solid sodium hydroxide to produce aqueous sodium sulfate and liquid water. If 1.92 g of sodium sulfate is produced from the reaction of 4.9 g of sulfuric acid and 7.8 g of sodium hydroxide, calculate the percent y..
At a certain temperature, the equilibrium constant, Kc, for this reaction is 53.3. H2(g)+I2(g) 2HI(g) Kc=53.3 At this temperature, 0.800 mol of H2 and 0.800 mol of I2 were placed in a 1.00-L container to react. What concentration of HI is present..
The following reaction takes place when some drain cleaners are added to water. What mass of hydrogen gas will be produce from 4.76 g of aluminum and 3.23 g of NaOH- 2Al(s) + 2NaOH(s) + 6H2O(l) -> 2NaAl(OH)(aq) + 3H2(g)
when a 0.6333-g sample of a compound of carbon hydrogen and sulfur was burned in excess oxygen 0.9272 g co2 0.3795 g
In a titration of 50.0mL of 0.1000 M formic acid with 0.100 M KOH, the titration error must be no more than 0.05mL. What indicator can be chosen to realize this goal
Draw the skeletal structure of 1-isopropyl-3-methylcycloheptane. Please explain, I am having trouble grasping this concept.
Calculate the mass of each product formed when 175 g of silver sulfide reacts with excess hydrochloric acid.4 significant figures. Ag2S(s) + HCl(aq) AgCl(s) + H2S(g) [unbalanced]
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