What is true in every balanced chemical equation?
A. Mass has to be conserved.
B. The reaction does not give off any energy.
C. All coefficients have to be an even number.
D. Atoms are created when products are formed.

Any french speakers? could someone check if my grammar is correct? my text: ma visite au zoo se passe bien. c’est très intéressant. ii y a les ours, les éléphants, les lions, les singes, les tigres, et les canards. les ours dorment. les singes sauter beaucoup. les tigres courent vite. les marchent canards.what i was it to say in english: my visit to the zoo is going good. it is very interesting. there are bears, elephants, lions, monkeys, tigers, and ducks. the bears sleep. the monkeys jump a lot. the tigers run fast. the ducks walk.

French speakers? i need some in french. could someone check over my french text to see if its correct? j’ai une petite famille. ma soeur est jolie et sympa, mais elle est ennuyeuse. mon petit frère est amusant et handsome. mon frère aîné est très grand, intéressant, et bon dessinateur. mon père est amusant, intelligent, et doué dans son travail. ma mère est jolie, comme ma soeur, sérieux, et un bon cuisinier. its supposed to say this in english: i have a small family. my sister is pretty and nice, but she’s boring. my little brother is fun and handsome. my older brother is very tall, interesting, and a good drawer. my dad is fun, smart, and good at his job. my mother is pretty, like my sister, serious, and a good cook.

Quelle est la relation entre napoléon i et napoléon iii? comment était son couronnement? qui était empereur pendant le premier empire et quelles sont les dates? qui était empereur pendant le second empire et quelles sont les dates? quels sont les emblèmes du premier et second empire? quelle est la signification de ces emblèmes?