Answers created by Room 204

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Question #38fc1
What is the oxidation number of carbon in the salt sodium oxalate, $N a_{2}^{+} C_{2} O_{4}^{2 -}$ $Na_2^(+)C_2O_4^(2-)$ ?
What is the role of water in the carbon cycle?
How do you solve $\frac{2^{6} \times 2^{3}}{2^{n}} = 2^{5}$ $(2^6 times 2^3)/(2^n) = 2^5$ ?
Why is salt sprinkled on icy roads and sidewalk?
Question #6bd4c
What is megahertz a measurement of?
How do you simplify ${(7 y - x)}^{2}$ $(7y -x)^2$ ?
How do you simplify $\frac{3}{2 x + 2} + \frac{x + 4}{2 x + 2}$ $(3)/(2x+2)+(x+4)/(2x+2)$ ?
How do you solve $3 x^{2} + 7 x - 13 = 0$ $3x^2+7x-13=0$ ?
Except for helium, how many electrons do noble gases have in their outer energy levels?
Question #80adf
Why do cells need water?
What is the most abundant carbohydrate and its formula?