HELPP ASAP!!Which of the following is a true statement? A. Organic carbón is found in all living things

B. a compound has different properties from each of its elements

C. Water is made from the elements of carbon and oxygen

D. Hydrogen compounds are the most comment in the world

With these questions , 15 pts & brainliest

Aplane travels 1000 miles in 5 hours .what is the planes average speed?

An object with initial temperature 130 ∘ f is submerged in large tank of water whose temperature is 50 ∘ f . find a formula for f ( t ) , the temperature of the object after t minutes, if the cooling constant is k = − 0.2 . remember newton's law of cooling (the rate of change of temperature with respect to time is equal to k times the difference between the temperature of the object and the surrounding temperature) ! : )