Which of the following equations illustrates the law of conservation of matter?
A. 2H2 + O2 + 2H20
B. 2H2 + 202 + 2H20
C. H2 + O2 + H2O
D. 2H2 + O2 + H2O

Which is the best for showing percentages of different types of cars sold(gas hybrid , electric , other ) in the united states ?

When an object is heated it contracts. a. true b. false

Consider the following position function. find (a) the velocity and the speed of the object and (b) the acceleration of the object. bold r left parenthesis t right parenthesisr(t)equals=left angle 6 t superscript 4 baseline comma 2 t cubed right angle6t4,2t3 for tgreater than or equals≥0