How many protons, electrons, and neutrons, respectively, does 89sr^2+ have?
a.36, 38, 51
b. 38, 38, 51
c. 38, 36, 51
d. 38, 36, 89
d. 36, 38, 53
the following elements exist as diatomic molecules under standard condition:
chlorine
a. oxygen
b. nitrogen
c. boron
d. carbon
e. bromine

Two people each hold the end of a rope and create waves by moving their arms up and down. this wave is best classified as a transverse wave because a) both the rope particles and the wave are moving in the same direction. b) the wave is moving up and down as the particles of the rope move horizontally. c) the wave is moving horizontally as the particles of the rope move up and down. eliminate d) the wave is moving in a parallel direction with the motion of the person's arms.

Acandle’s wick is the fabric string that holds the flame, and it burns down at a constant slow pace when the candle is lit. the wick is usually surrounded by wax. which is the most important property of covalent compounds that makes them useful for making candle wax? a low boiling point a low melting point a high boiling point a high melting point

What is the source of continuous heat and energy that we receive from the sun