What type of submicroscopic descriptions are in body heat? Help Pleaseee

Asmall amount of a solid is added to water. the observation made after fifteen minutes is shown in the figure. which of these solids has been probably added to water? a) oil b) sand c) sugar d) wood chips

This chart represents the melting point of several substance. what besy explains the high melting point of the salt?

Blank allows you to do calculations for situations in which only the amount of gas is constant a)boyle's law b)combined gas law c)ideal gas law d)dalton's law