pH solution in water

What is the pH of a solution in water with a H3O+ ion concentration of 3.5x10-8 M. Is this solution acidic or basic?

pH solution in water

A solution in water has a pH of 5.25. What is the molarity of H3O+ ions in this solution?

Coal combustion

A particular coal contains 5.45% by weight of sulfur. How many grams of SO2 gas will be produced when 100.0g of the coal is combusted? S(s) + O2(g) SO2(g)

Grams of Pb in water

If a water sample is found to contain 0.015 ppm of Pb, how many grams of Pb are in 3.00L of this water?

What is the pressure in atm?

What is the pressure in atm of 1.00g of NH3(g) in a 500mL container at 20oC?

The reaction in an automobile airbag is:

The reaction in an automobile airbag is: 2NaN3(s) 2Na(s) + 3N2(g) If 80.0g of NaN3 reacts, what volume of N2(g) is produced at 25oC and a pressure of 1.00 atm.?

How many grams of particulates?

If a person breathes in 20m3 of air per day and the air contains 263 micrograms of particulates per m3, does a person breathe in per day?

Finding the percent yield of cobalt in an analysis of a coordination compound

The purpose of the lab is to analysis this coordination compound Co(x)NH3(y)Cl(z) and give the percent yield of colbalt. I started out with 8.007 g of CoCl2*6H20 and 4.007 g of NH4Cl. The experiment required the following procedures: Mixed the 4.007g of NH4Cl with 25mL 15 M NH3. Then added the 8.007g of CoCL2*6H20. Then ad ...continues

A rapid way to convert iron to rust (Fe2O3) WITHOUT using heat as a catalyst.

I'm working on an experiment that requires the rapid (minutes rather than days) conversion of Iron into red rust (Fe2O3) WITHOUT using heat as a catalyst. The reverse reaction (also without heat as a catalyst) would also be helpful.

chemical equations

I need help to balance the 5 chemical equations 1.Write balanced chemical equations for the following: •Ionization in water of the weak acid HF •Ionization in water of the strong acid HI •Reaction of the strong acid HI with the strong base NaOH in water •Interaction of the weak base C2H5NH2 with water. • ...continues