Answer:
32.9%
Explanation:
<u>The mass of water </u>present in the original sample can be calculated by the substraction:
- m H₂O = sample mass before heating - sample mass after heating
- m H₂O = 8.24 g - 6.20 g = 2.04 g
The <u>percent by mass of water</u> can be calculated with the formula:
- Water Mass / Original Sample Mass * 100 %
* 100% = 32.9%
B, a physical change because it is not destroying the substance.
Answer:
RESPONSIBLE:
1. Joanna aims to develop a scientific product that will improve people's lives.
2. Alisha uses credible research to publish a report about the negative effects of getting insufficient sleep.
IRRESPONSIBLE:
1. Henry was selective in his use of data; he used only the data that supported his hypothesis.
2. Kevin combined data from two unrelated experiments in an effort to impress his instructor.
Answer:
Chemistry is a branch of science that involves the study of the composition, structure and properties of matter. Often known as the central science, it is a creative discipline chiefly concerned with atomic and molecular structure and its change, for instance through chemical reactions.Explanation:Chemistry is a branch of science that involves the study of the composition, structure and properties of matter. Often known as the central science, it is a creative discipline chiefly concerned with atomic and molecular structure and its change, for instance through chemical reactions.
Answer:
Having as wide a range of organisms as possible.
Hope it helps! :)
