Answers: 1
Biology, 21.06.2019 18:00
The phlogiston theory in the 17th century attempted to explain burning. the theory stated that combustable objects contained a material called phlogiston, a substance without mass, color, odor, etc. after objects burned, the objects were dephlogistonated and were then in their true form. the phlogiston theory was accepted until the 18th century, when lavoisier proved that combustion requires a gas that has mass. phlogiston is considered a) to be scientific knowledge b) not to be scientific knowledge c) to be proven by scientific method d) to be accepted in the modern scientific community
Answers: 2
Biology, 21.06.2019 18:40
The oxidizing agent our bodies use to obtain energy from food is oxygen (from the air). if you breathe 15 times a minute (at rest), taking in and exhaling 0.5 l of air with each breath, what volume of air do you breathe each day? air is 21% oxygen by volume. what volume of oxygen do you breathe each day?
Answers: 1
Biology, 22.06.2019 00:30
Which element forms the basis of all organic organisms a carbon b oxygen c hydrogen d nitrogen
Answers: 2
Biology, 22.06.2019 04:10
Anne, an intern in a microbiology lab, was observing the characteristics of various specimens of protists. match each specimen to the category of protist to which it belongs.
Answers: 1
How a scientist might use a karyotype to study genetic disorders?...
Mathematics, 02.07.2019 19:40
Biology, 02.07.2019 19:40
Mathematics, 02.07.2019 19:40
Biology, 02.07.2019 19:40
Chemistry, 02.07.2019 19:40
Mathematics, 02.07.2019 19:40
Biology, 02.07.2019 19:50
Chemistry, 02.07.2019 19:50
Mathematics, 02.07.2019 19:50
Biology, 02.07.2019 19:50