Other Chemistry Answers

a tire contains a mixture of gases with the following partial pressures: Po2=51.3 kPa, Pco2= 0.10 kPa, Pn2 = 191.3 kPa, and P others= 2.3 kPa. calculate the total pressure as described by daltons law of partial pressures
a. 101.3 kpa
b. 183.7 kpa
c. 242.7 kpa
d. 245.0 kpa

the mole fraction of He is gaseous solution prepared from 4.0g of He, 6.5g of Ar. and 10.0g of Ne is

4NH3+5O2 yields 4NO+6H2O. In a certain condition this reaction occurs and yields 45.64 NO. How many grams of NH3 and O2 are needed to make 19.6 NO.

what are the types of forces in water

how many grams of potassium nitrate will you need to prepare 10L of a .75M solution

how many atoms are in 5.081 moles of Zn? In 1 lb. box of salt (NaCl), 1 lb=454 gram, how many atoms of Cl are in the box?

A solution is made by adding 70.00grams of sodium acetate to 400.0mL of 0.60 mol/L solution of acetic acid.
a.What is the pH of the solution?
b.10.0mL of 2.0M of sodium hydroxide solution was added to the solution above. Calculate the new pH.
c.10.0mL of 2.0M of hydrochloric solution was added to the solution in part a. Calculate the new pH.

What is the molecular mass of a molecular compound with a freezing point -.520 degrees C when 6.21 g is dissolved in 500 g of water?

An impure sample of barium hydroxide of mass 1.6524 g was allowed to react with 100cm3 of 0.200 mol/dm3 HCL. When the excess acid was titrated against NaOH, 10.9cm3 of NaOH solution was required. 25.0cm3 of the NaOH required 28.5cm3 of the HCL in a seperate titration. Calculate the percentage purity of the sample of barium hydroxide.

An automatic gun fires ' n ' bullets with a speed of 1800 m/ sec in 3 seconds. The mass of each bullet is 25 gm. If 450N force is required to hold the gun in position.Find the number of bullets fired in each second.