Answer:

1. A chemical equation is a shorthand way of writing a chemical reaction using chemical symbols, formulas and coefficients.

2. Lavoisier

Through this experiment, Lavoisier proved that water was not an element, but a compound made of hydrogen and oxygen, with a weight percentage of 15% and 85%, respectively. We now know that the correct percentage should be 11% for hydrogen and 89% for oxygen.

3. The percent composition is the percent by mass of each element in a compound. It is calculated in a similar way to that of the composition of the peanut butter.

4. The percent composition of a compound is calculated with the molecular formula: divide the mass of each element found in one mole of the compound by the total molar mass of the compound.

5. mass percent = (mass of solute / mass of solution) x 100%

The units of mass are typically grams. Mass percent is also known as percent by weight or w/w%. The molar mass is the sum of the masses of all the atoms in one mole of the compound. The sum of all the mass percentages should add up to 100%.

Explanation:

Pa Brainliest nlng

Answer:

haha sec acc ko po ito sa Isa kung celphon