HELP PLSS 40. Calculate the orbital velocity and the period, in days, for an object orbiting the sun at distance of 1.5 x 1011m. Give the period in days (The mass of the Sun is 1.989*1030 kg).

The flame produced by the burner of a gas (propane) grill is a pale blue color when enough air mixes with the propane (c3h8) to burn it completely. for every gram of propane that flows through the burner, what volume of air is needed to burn it completely? assume that the temperature of the burner is 195.0°c, the pressure is 1.05 atm, and the mole fraction of o2 in air is 0.210.

Why are nonmetals more likely to react with eachother by sharing electrons

An athlete performing a long jump leaves the ground at a 27.0 degree angle and lands 7.80m away. what was the takeoff speed?