I need help fast please Two chemical reactions are shown:
A. Ca(OH)2 + CaO + H2O
B. 4K + O2 → 2K20
Which statement is true? (5 points).

Both are synthesis reactions.

Both are decomposition reactions.

A is a synthesis reaction, and B is a decomposition reaction.

A is a decomposition reaction, and B is a synthesis reaction

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

A2.5% (by mass) solution concentration signifies that there is a 2.5 % (by mass) solution concentration signifies that there is blank of solute in every 100 g of solution. of solute in every 100 g of solution

What if it is did darwin used to support his theory of evolution