The wedge, screw, and lever are all a. compound machines
b.100 percent efficient
c. simple machine
d. found in the human body ​

This image is an example of a(n) a) atom. b) compound. c) mixture. d) molecule.

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

Determine the reaction and balance the following equations urgent due in the morning