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...