Please help me! Which chemical equation follows the law of conservation of mass?
A. 2LIOH + H2CO3 Li2CO3 + H20
B. 2LIOH + H2CO3 → Li2CO3 + 2H20
O C. LiOH + H2CO3 → Li2CO3 + 2H20
O D. 2LIOH + H2CO3 → LICO3 + 2H20

Lin yao looks at the back of a spoon. how should she describe her reflection? upside down and smaller upside down and larger right-side up and smaller right-side up and larger

Which statement is best supported by the information in the chart? wave y is moving the fastest. wave x is moving the fastest. all of the waves are moving at the same speed. all of the waves have the same value of wavelengths per second.

Greg drew a diagram to compare two of the fundamental forces. which labels belong in the areas marked x, y and z? gravitational force electromagnetic force x. attractive y repulsive z: infinite range x: infinite range y attractive z. repulsive x. always attractive y: infinite range z: attractive or repulsive x. attractive or repulsive y infinite range z: always attractive