C 203 + 3C - 2Cr + 3CO If the experimental yield obtained was 18.45 g of Cr, but you should have produced 535 g of Cr, what is the percent yield?

c is the answer because when something is left after something evaporates that shows the chemical change.

when [oh-] is 10-5  m, and [h3o+] is 10-9  m, the poh is 5 and ph is 9. again in both cases the sum of ph and poh is 14. however, the hydrogen ion concentration is not always going to be equal to exactly 1 x 10 raised to a negative number. for example, we skipped over the value of 2.0 x 10-7.

colorless gas, exhibiting a blue glow when placed in an electric field

b) solid

its a type of rock