The graph below shows the composition of the air we breathe. Which of the following statements correctly classified the air we breathe?
A. The air we breathe is an element because it is made of pure substances
B. The air we breathe is a compound because it is made of different pure substances.
C. The air we breathe is a heterogeneous mixture because it had visibly different substances and phases.
D. The air we breathe is a homogeneous mixture because it has substances but the same appearance throughout.
Answers: 3
Physics, 21.06.2019 20:20
Copper has free electrons per cubic meter. a 71.0-cm length of 12-gauge copper wire that is 2.05 mm in diameter carries 4.85 a of current. (a) how much time does it take for an electron to travel the length of the wire? (b) repeat part (a) for 6-gauge copper wire (diameter 4.12 mm) of the same length that carries the same current. (c) generally speaking, how does changing the diameter of a wire that carries a given amount of current affect the drift velocity of the electrons in the wire?
Answers: 2
Physics, 22.06.2019 05:30
What do you think car designers do if the damage caused by a crash test is too severe?
Answers: 1
Physics, 22.06.2019 16:30
He latent heat of vaporization for ethyl alcohol is 854 j/g. the amount of energy, rounded to the nearest whole number, needed to change 5.20 grams of ethyl alcohol from a liquid to a gas is
Answers: 2
The graph below shows the composition of the air we breathe. Which of the following statements corre...
Chemistry, 19.05.2021 05:50
Mathematics, 19.05.2021 05:50
Mathematics, 19.05.2021 05:50
Mathematics, 19.05.2021 05:50
Mathematics, 19.05.2021 05:50
Social Studies, 19.05.2021 05:50
Mathematics, 19.05.2021 05:50
Mathematics, 19.05.2021 05:50
Mathematics, 19.05.2021 05:50
Health, 19.05.2021 05:50
English, 19.05.2021 05:50
Social Studies, 19.05.2021 05:50
Mathematics, 19.05.2021 05:50