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A) How many liters of H2 gas can be produced at 0 °C and 1.00 atm (STP) from 40.0 g of Zn?
Zn(s)+2HCl(aq)→ZnCl2(aq)+H2(g)
B) A steel cylinder with a volume of 15.0 L is filled with 64.2 g of nitrogren gas at 25°C .
What is the pressure, in atmospheres, of the N2 gas in the cylinder?
C) A gas mixture containing oxygen, nitrogen, and neon exerts a total pressure of 1.16 atm .
If helium added to the mixture increases the pressure to 1.74 atm , what is the partial pressure (atm) of the helium?
Draw the Lewis structure of the molecule, assuming that the Cl atoms bond to a single C atom and that there is a C -C bond and two C - O bonds in the compound.
Problem- When 2.05 g of polystyrene was dissolved in toluene to give 100 mL of solution, the osmotic pressure of the solution was 0.605 kPa at 25oC. The molar mass of the polymer is: Select one:
Enthalpy of combustion of ethanol(g) is -1371 kJ/mol. Temperature and pressure of intake mixture is 25 oC and 1 bar, respectively. Assume ideal behavior of diatomic gas and ignore the changes in the number of moles of gas during combustion.
How many moles of helium have been evolved?
If 159 of wet is collected over water at 24 and a barometric pressure of 737 , how many grams of have been consumed.
What is radioactivity and state there economical importance in a country
Estimate the average concentration of methylene chloride. Look up the TL V or the 1WA for methylene chloride and consider how the: evaporation might be performed.
Draw the structure of the product that is formed when but-1-yne is treated with the following reagents:1) disiamylborane; 2) H2O2, KOH; 3) LiAlH4. Disiamylborane = [(i-Pr)(CH3)CH]2BH, a hindered derivative of BH3.
Illustrate the bond angles which are at least slightly different in the C2H2Br2 molecule. Therefore this has isomers and find the isomer that shows the least slightly different bond angle
Indicate the concentration of each of ion present in the solution formed by mixing
Using the same sample of gas (P 1= 795 torr , T 1 = 37 C ), we wish to change the pressure to 7950 torr with no accompanying change in volume or amount of gas. What temperature T 1, in Celsius, is needed to reach this pressure
Draw the reaction between benzoic acid and NaOH and explain why it is neccessary to use 3M NaOH as the aqueous layer to better separate the benzoic acid.
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