Which statement is true about a proton and an electron?
(1) they have the same masses and the same charges.
(2) they have the same masses and different charges.
(3) they have different masses and the same charges.
(4) they have different masses and different charges.

About 70 percent of the earth's surface is water-covered, and about 96.5 percent of all earth's water is salt water. identify the watery feature on earth that is made of freshwater rather than salt water. a) bay b) glacier c) ocean d) sea it is not incomplete this is the true question

0.2348 grams of pbcl2 used to form 44.0 ml of solution.

What’s the physical properties in calcium chloride