Matt's cube, after 5 trials, had an average density of 7.40 g/cm3 . his group's cube was made of
a) aluminum.
b) gold.
c) nickel.
d) zinc.

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

How much heat is added if 0.814g of water increase in temperature by 0.351 degree c?

Molecular iodine, i2(g), dissociates into iodine atoms at 625 k with a first-order rate constant of 0.271 s−1. part a part complete what is the half-life for this reaction?