Helium has two protons, two neutrons and two electrons. what is the charge of this atom?
a....
Chemistry, 30.12.2019 22:31 theirishgold42
Helium has two protons, two neutrons and two electrons. what is the charge of this atom?
a. 0
b. 2
c. 4
d. more information is needed.
Answers: 3
Chemistry, 21.06.2019 17:30
Which type of stress results when two plates push against one another? a. compression b. tension c. force d. shear
Answers: 1
Chemistry, 22.06.2019 10:30
Acompound has a molar mass of 92.02 grams/mole, and its percent composition is 30.4% nitrogen (n) and 69.6% oxygen (o). what is its molecular formula? a. n2o4 b. no2 c. n2o d. n4o2
Answers: 1
Chemistry, 22.06.2019 18:00
Alidded glass container is filled with a colored gas. after a period of time, it is observed that the gas is uniformly spread throughout the box and that the movement has slowed considerably. next, a warm iron plate is carefully placed under the box. why is there resumed movement of the gas in the container?
Answers: 2
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