I DONT NEED THE ANSWER JUST PLEASE TELL ME HOW TO DO THIS PLEASE, ITS DUE AT 12. BRAINLIEST. 15 POINTS! Copper (II) chloride has a molar mass of 134.452 g/mol. What is the mass of 2.17 moles?

Melting and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.

Look at the spectrums of a star moving towards earth and a motionless star. which of these is a correct inference that can be draw from the observation of the two spectrums? (2 points) the spectrum of a motionless star is difficult to be viewed separately using oridinary telescopes. the spectrum of a motionless star is identical to the spectrum of a star which moves towards earth. the spectrum of a star shifts towards the red region when the star moves towards earth. the spectrum of a star shifts towards the blue region when the star moves towards earth.

If you burn 46.6 g of hydrogen and produce 416 g of water, how much oxygen reacted