It takes 1.25 kJ of energy to heat a certain sample of pure iron from 12˚C to 15.2˚C. Calculate the mass of the sample.

When the volume and number of particles of a gas are constant which of the following is also constant

2pos suppose an object in free fall is dropped from a building. its starting velocity is 0 m/s. ignoring the effects of air resistance, what is the speed (in m/s) of the object after falling 3 seconds? give your answer as a positive decimal without units. answer here

What is the chemical formula for the compound formed between sodium and flour one