Chemistry (mathematical) question.?

Question

whats the little bar on top of a number that means repeat forever. like when you divide 2/3. its 6.666666 repeating. whats the bar you put over the 6. speaking of that my chemistry homework has a question that say 750 (with that repeating bar on the 0) and your supposed to divide that (7500000000 repeating 0s) by 32. how do you do it

thanks in advanced

Answer 1

The technical name for that symbol is a vinculum. I agree that I've never seen a vinculum appear over digits that were not to the right of a decimal point. I've also never seen them above trailing zeroes after a decimal point. However, if that's what you have here, 75.000..., where the ellipses (...) mean the same thing as a vinculum, then I think your answer should include a vinculum as well, making it 75.000 / 32 = 2.34375000..., where you would write a vinculum over the zeroes instead of ellipses.

Answer 2

I believe it's called a repetend bar. Normally those bars are used only to the right of the decimal place, so your chemistry homework sounds really strange. I'll humor it, though. In that case, a number with an infinite amount of zeros to the left of the decimal place would be equivalent to infinity. Infinity over a number like 32 would still be infinity.

Please check your homework for a missing decimal point. If the number is 75.0000 (repeating) / 32, that would be a different answer. For example, if this is a problem involving significant figures, the answer would have to be only two significant figures, which would be 3.2.

Answer 3

T temperature to be measured on kelvin scale.. i.e. 19+273 ok and no of moles.. weight divided by using employing molecular weight fee of R 2 b chosen accordin to the gadgets used for pressur en quantity.. if u use atm-l then the fee of R is 0.0821 if u use pascal-m^3 fee is 8.314 and for calculation of heat temperature or ability in potential, fee of R shud be approximated to two