About how many calories are required to convert 2 g of ice at 0°c to water vapor at 50°c ?.

Did the universe cool off or get hotter as it expanded after the 'big bang"?

The measure of the angles supplement is 30 more than four times that of its complement. find the measure of the angle described

If point e(5, h) is on the line that contains a(0, 1) and b(−2, −1), what is the value of h? a)-1 b)0 c) 1 d) 6 !