# chemistry

posted by .

What is the oxidation number of sulfur in SO4-2?

• chemistry -

## Similar Questions

1. ### subscripts and superscripts enabled

Examples: The water molecule: H 2 0 Quadratic: ax 2 + bx + c = 0 Just like you would use the b tag for bold or the i tag for italic, use the sub and sup tags for subscript and superscript. that's great...but what do you mean "b tag" …
2. ### confused+ math!

A finite geometric sequence has t1= 0.1024 and t2= 0.256 how many terms does this sequence have if its middle temr has the value 156.25?
3. ### someone explain to me!

the third term of a geometric sequence is t3= -75 and the sixth term is t6=9375. determine the first term and the common ratio. how do I do this question I am tying really hard but I still don't comprehend this question! We have t …
4. ### check!

Write a recursive formula that generates the terms of the following: . . .1, 3, 9, 27 my answer: t1=1, n>2 --> tn= 3tn-1 is this correct?
5. ### Derivatives

What is the fourth derivative of f(x)= e^-x^2. I got f''(x)=-2e^-x^2 + 4x^2e^-x^2 i need some help on find f''''(x) You have f(x) = e -x 2 then f'(x) = -2x*e -x 2 = -2x*f(x) f"(x) = (4x 2 - 2))e -x 2 = f(x)*(4x 2 - 2)) f"'(x)= f'(x)*(4x …
6. ### Chemistry

What is the formula for the ions in the compounds BaSO4 and Li2CO3 BaSO4 has barium ions (Ba 2+ , Sulfate ions SO 4 2- , and Lithium carbonate has lithium ions Li 1+ , and carbonate ions CO 3 2- Ba ions (might be written as Ba^2+) …
7. ### Chemistry

Hey i was wonderingg for my science homework i don't understand how to do this problem. It says: Plutonium 239 can be produced by bombarding uranium 238 with alpha particles. How many neutrons will be produced as a product of each …
8. ### science(chem)

For an example of charge balance in my text it says Write a charge balance eqzn for an aqueous sol that contains NaCl, Ba(ClO 4 ) 2 , & Al 2 (SO 4 ) 3 The answer given is: [Na+] + [H30+] + 2[Ba+] + 3[Al3+]= [ClO4-] + [NO3-] + 2[SO42-] …
9. ### Chemistry

Compound Identification How can I identify the anion of an unknown solution?
10. ### Physical Chemistry

In my physical chemistry book, I'm reading about "Margules Equations": ln γ A = Βx B 2 ln γ B = Βx A 2 I don't understand where these equations come from. How is it known that there is a single constant Β …

More Similar Questions