1.50g of NaNO3 is dissolved into 25.0mL of water, causing the temperature to increase by 2.2°C. The density of the final solution is found to be 1.02g/mL. Which of the
following expressions will correctly calculate the heat gained by the water as the NaNO3 dissolves? Assume the volume of the solution remains unchanged.

Which class of molecules functions as chemical signals? hormones water carbohydrates proteins

What is the mass of 0.46 mil of mgcl2

Diffraction is when light is bent around obstructions. which of the these observation about clouds would indicate diffraction? a) after rain storms, you can sometimes see rainbows. b) clouds are white or gray and cannot be seen through. c) on a cloudy day, the temperature tends to be cooler than a sunny day. d) the edges of dark clouds appear lighter. this