Syndra

Factor the expression and use the fundamental identities to simplify. 1-2 cos^2x + cos^4x

Deduce the number of nitrogen atoms in: 5.00 x 10^-3 mol of ammonia, NH3 and 4.601 g of nitrogen dioxide, NO2

What is the mass of 3.01 x 10^22 iron (II) ions, Fe^2+?

Freon-12 is formed as follows: 3 CCl4 + 2 SbF3 -> 3 CCl2F2 + 2 SbCl3 150 g tetra chloromethane is combined with 100 g antimony (III) fluoride to give Freon-12 (CCl2F2). Identify the limiting and excess reagents, and calculate how many grams of Freon-12 ca...

Use a double-angle formula to rewrite the expression. 6 sin x cos x

Does anyone know a website with practice problems (and answers) regarding quantitative chemistry? I haven't been able to find anything on Google.

State the full electron configuration of a free nitrogen atom.

An open top box with a square base has a volume of 30ft^3. The total surface area of the box is? a) S.A=x^2-60/x b) S.A=x^2+60/x c) S.A=x^2-120/x d) S.A=x^2+120/x

So, you don't have to do anything about the H3 or the O2?

Thank you so much!

Thank you for the help!

I got SbF3 as the limiting reagent.

Where did the 13π/12 and 17π/12 come from?

OH, alright. I understand now. Thank you so much for your help!

How did you factor the 2 cos^2x - 1 - cosx?

Ah, okay. Thank you!

I know to use that specific formula, but I'm not sure how to incorporate it with the given.

Ah, alright. That makes sense. Thank you!