# Posts by Theodore

Total # Posts: 9

**math**

If a CD makes 58 and half revolutions in 3 fourths a min ,how many in a min

**life orientation**

How to provide a safe and healthy enviroment

**CHEMISTRY**

2H2S + 3O2 → 2H2O +2SO2 given the balanced equation, if 4 moles of hydrogen sulfide react: How many moles of oxygen consumed? How many moles of water and sulfur dioxide are produced?

**optics**

I want to substitude the ray optics analysis with what are the resultant waves that happen. I say "resultant" because many waves that would exist if they were alone, as they are not alone, after their superposition with the other waves become some resultant waves ...

**math**

Given the following set, select the statement below that is true. V = {a, e, i, o, u} 1. v ¡ô V 2. a ¡ô V 3. y ¡ô V 4. o ∉ V 5. V ¨ª

**math**

yes

**pre algebra**

I have a problem and I would like to know how to work out the problem to get the answer. Write an algebraic expression for each phrase product of m and n -2 What are the steps in working this out?

**chemistry**

how many grams of CO are needed to react with an excess of Fe2O3 to produce 209.7gFe? Fe2O3(s) + 3CO(g) => 3CO2(g) + 2Fe(s)

**Chemistry - Equations**

I am a student in the ninth grade and I need help with the following problems because I do not understand how to do them. I appreciate your help and thanks once again. 7. in 2CO(grams) + O2(grams) => 2CO2(grams), what is the ratio of moles of oxygen used to moles of CO2? 9...