Physics, 09.12.2020 22:50 genyjoannerubiera
How many electrons are in an element with an atomic number of 20 and an atomic mass of 40? options: ANSWER FOR BRAINLIES
A. 40
B. 20
C. 60
D. 0
Answers: 2
Physics, 21.06.2019 13:30, jigaboo420
Темирказык жулдызынын жулдыздык шамасы 2,02, ал веганын жулдыздык шамасы 0,03. осылардын кайсысы жарык жане неше есе жарык?
Answers: 2
Physics, 22.06.2019 00:30, powberier6979
Consider an ordinary, helium-filled party balloon with a volume of 2.2 ft3. the lifting force on the balloon due to the outside air is the net resultant of the pressure distribution exerted on the exterior surface of the balloon. using this fact, we can derive archimedes’ principle, namely that the upward force on the balloon is equal to the weight of the air displaced by the balloon. assuming that the balloon is at sea level, where the air density is 0.002377 slug/ft3, calculate the maximum weight that can be lifted by the balloon. note: the molecular weight of air is 28.8 and that of helium is 4.
Answers: 2
Physics, 22.06.2019 14:00, smkw04p3ao0n
If element x has 99 protons how many electrons does it have
Answers: 1
How many electrons are in an element with an atomic number of 20 and an atomic mass of 40? options:...
Mathematics, 01.04.2021 20:40
Medicine, 01.04.2021 20:40
Mathematics, 01.04.2021 20:40
Mathematics, 01.04.2021 20:40
Mathematics, 01.04.2021 20:40
Mathematics, 01.04.2021 20:50
English, 01.04.2021 20:50