What is the total number of Joules of heat energy absorbed when 30g of water is aporized at its normal boiling point?

Convert the temperature of dry ice, –77 ∞c, into degrees fahrenheit and kelvin.

Jenny wants to test the electrical conductivity of two substances dissolved in water. she is preparing the containers for the experiment. which factor is most important for her to control?

What is the relative mass of an electron? a) 1/1840 the mass of a neutron + proton b) 1/1840 the mass of an alpha particle c) 1/1840 the mass of a c-12 atom d) 1/1840 the mass of a hydrogen atom