Which compound most likely has atoms held together by covalent bonds? A. Lithium fluoride, LiF
B. Methane, CHA
C. Sodium chloride, NaCl
D. Magnesium chloride, MgCl2​

State one advantage and one disadvantage of using a plane mirrior as a driving mirrior

How many hydrogen (h) atoms are in one molecule of sulfuric acid, h2so4? (1 points) 1 2 4 7

An astronaut in space cannot use a scale or balance to weigh objects because there is no gravity. but she does have devices to measure distance and time accurately. she knows her own mass is 77.4 kg , but she is unsure of the mass of a large gas canister in the airless rocket. when this canister is approaching her at 3.50 m/s , she pushes against it, which slows it down to 1.30 m/s (but does not reverse it) and gives her a speed of 2.60 m/s . what is the mass of the canister?