Answer:
Steps of a scientific investigation include 1. make observation
2. ask a question
3. form a hypothesis
4. test the hypothesis
5. analyze results
5 , drawing conclusions,
6. and communicating the results
Answer:
firstly ,<u>GREEK PHILOSPHER </u><u>DEMOCRITUS </u>suggested that matter is composed of tiny particles called atom . In the beginning of 19th century <u>JOHN DALTON </u> put forward atomic theory . At the end of 19th century it was considered that atom can not be subdivided .
You are given
300 grams of FeCr2O7. You are required to get the mass of O2 in grams. The first
thing to do is to find a reaction between FeCr2O7 and O2. The balanced chemical
reaction is 2Fe + 6Cr + 21/2O2 -> Fe2(Cr2O7)3. The molar mass of Fe2(Cr2O7)3
is 759.65 grams per mole and 32 grams per mole for O2.
<span>
300g Fe2(Cr2O7)3
(1 mol Fe2(Cr2O7)3/759.65 g Fe2(Cr2O7)3)(21/2 mol O2/1 mole Fe2(Cr2O7)3)(32 g
O2/1 mole O2) = <u>132.7 g O2</u></span>
Answer:
Which ever item has more water inside of it
Explanation:
Answer: 12% sugar i think
Explanation:
