If you were to test how much time it takes to melt a piece of ice in warm water, what are three different variables in your test that you must consider?

HELPP

Match the formula for the following compound:   magnesium sulfate heptahydratemgs·7h2omg2so4·7h2omg(s o4)2·7h2omgso4·7h2o

Which element below could be an isotope of berylliumsodium-10beryllium-10boron -9carbon-9

Light travels through space at 186,282 miles per second and it takes about 1.3 seconds for light to travel from the moon to earth. which of the following is the correct method of finding the distance, in miles, between the moon and earth? add 186,282 and 1.3 divide 186,282 by 1.3 multiply 186,282 by 1.3 subtract 1.3 from 186,282