A student measures the mass of an object to be 5.7 grams. What would the final density be if the volume of the object was 45.0 mL?
A. 0.126 g/mL
B. 79g/ml
C. 0.56 g/ml
D. 8.5g/ml

20 pts ‼️ an unmanned spacecraft travels to mars. mars has a lower strength of gravity than earth. where in the image is the spacecraft’s weight the greatest?

Two metal blocks that have slightly different temperatures are placed next to one another. after five minutes, they both have lower but equal temperatures. according to the law of conservation of energy, what  most likelyhappened? energy was created inside the blocks.energy was destroyed inside the blocks.energy was absorbed into the blocks from outside the system.energy was transferred from the warmer block to the cooler block.

What is the percentage of hydrogen in c2h4