How much heat is required to raise the temperature of 8.0 g of solid water by 3.0 °C ?

Imagine that you push on a large rock. at what point does your effort change the rock’s mechanical energy?

How many moles of bromine are needed to produce 3.23 moles of potassium bromide

Use the de broglie's wave equation to find the wavelength of an electron moving at 4.5 × 106 m/s. show your work. note: h= plank's constant (6.62607 x 10-34 j s)