Sunday
April 20, 2014

Posts by Gurjot


Total # Posts: 28

Chemistry 3A
C2H2(g)+ 5/2o2(g)-> 2Co2(g)+ H2o(g)+ 1255.8KJ how many grams of C2H2 are reacted when 310 KJ of heat are released? I left the oxygen (O) lowercase in the equation so it does not get mixed up with zero.

Chemistry 3A
CS2 + O2 -> CO2 + SO2 and 10.0 grams of each reactant, calculate the number of moles of SO2 that can be produced in this reaction

Chemistry 3A
compute the molarity of a solution consisting of 2.0 moles of calcium chloride in 500mL of solution.

Chemistry 3A
How many grams of KCl would you need to weigh out to prepare 0.25L of a 2.00 M KCl solution?

Chemistry 3A
calculate the mass of solid NaCl that must be added to 1.50L of a 0.100M AgNO3 solution to precipitate all the Ag+ ions in the form of AgCl. calculate the mass of AgCl formed.

Chemistry 3A
what is the maximum number of electrons that may occupy the second electron energy level?

Chemistry 3A
what is the maximum number of electrons that may occupy the second electron energy level?

Chemistry 3A
i got it... thank you

Chemistry 3A
calculate the empirical formula for an unknown compound from the following information: C= 39.2%, H= 8.73% and O= 52.1%

Chemistry 3A
how do i find the number of moles of oxygen atoms in: Al(OH)3

Chemistry 3A
how do we write a nuclear symbol?

Chemistry 3A
a student weighed out 1.106g of KHP. How many moles was that?

Chemistry 3A
a titration required 18.38mL of 0.1574 M NaOH solution. how many moles of NaOH were in this volume?

Chemistry 3A
A volume of 122mL of argon, Ar, is collected at 50 degrees Celsius and 758 torr. What does this sample weigh?

Chemistry 3A
in a lab experiment, 133mL of gas was collected over water at 24 degrees Celsius and 742 torr. Calculate the volume that the dry gas would occupy at STP.

Chemistry 3A
how do i calculate the density of sulfur dioxide, SO2, at STP.

Chemistry 3A
what volume would 10.5 g of nitrogen gas, N2, occupy at 200 K and 2.02 atm?

Chemistry 3A
that is what i was confused about?

Chemistry 3A
the question says what will it occupy at STP?

Chemistry 3A
A 425mL volume of hydrogen chloride gas, HCL, is collected at 25 degrees Celsius and 720 torr. what volume will it occupy?

Chemistry 3A
a quantity of oxygen occupies a volume of 19.2L at STP. How many moles of oxygen are present?

Chemistry 3A
a sample of gas occupies 500ml at STP. what volume will the gas occupy at 85.0 degrees Celsius

Chemistry 3A
thank you

Chemistry 3A
thank you

Chemistry 3A
a 325ml sample of air is at 720 torr and 30.0 degrees Celsius. what volume will this gas occupy at 800 torr adn 75.0 degrees Celsius.

Chemistry 3A
the pressure of hydrogen gas in a constant volume cylinder is 4.25atm at 0 degrees celsius. what will the pressure be if the temp. is raised to 80 degress celsius? Also do we have to first convert celsius to kelvin?

Chemistry 3A
a sample of methan gas, CH4, occupies 4.50L at a temp of 20.0 degrees celsius. if the pressure is held constant, what will be the volume of gas at a 100 degrees celsius

Chemistry 3A
a sample of nitrogen gas, N2 occupies 3.0L at a pressure of 3.0 atm. what volume will it occupy when the pressure is changed to 0.50 atm and the temperature remains constant?

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