A glass of cold water starts at 0.3 degrees Celsius. Over the course of 9 minutes the water warms up to 9.2 degrees Celsius. At what rate is the water warming? answer without units, round to 2 decimal places.

The wave shown on the electromagnetic spectrum disturb the medium it passes through a)different frequency. b)the same frequency .

Tin has ten stable isotopes. the heaviest, 124sn, makes up 5.80% of naturally occuring tin atoms. how many atoms of 124sn are present in 82.0 g of naturally occurring tin? what is the total mass of the 124sn atoms in this sample?

What is a possible quantum number set for an electron in the 3s orbital of a magnesium atom