Chemistry, 16.03.2020 20:19, linkhyrule9922
According to "When Is a Planet Not a Planet?" scientists determined that Pluto was not a planet. What were the causes that led them to this conclusion? Select three answers.
A.
Pluto also orbits around another sun.
B.
Pluto resembles a moon more than a planet.
C.
Pluto’s orbit crossed over the orbit of another planet.
D.
Pluto’s orbit is not the same shape as the orbits of the other planets.
E.
Scientists believed the theory that the outer planets were all made of gas, and Pluto had a rocky core.
You have to pick 3 choices
Answers: 3
Chemistry, 22.06.2019 03:50, AysiaRamosLee
What is the temperature of one mole of helium gas at stp?
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Chemistry, 23.06.2019 06:40, hackman1216
The combustion of methane, ch4, releases 890.4kj/mol. that is, when one mole of methane is burned,890.4 kj are given off to the surroundings. this meansthat the products have 890.4 kj less than the reactants. thus, ah for the reaction = - 890.4 kj. a negative symbolforah indicates an exothermic reaction. ch (g) + 20 (g)> co2 (g) + 2 h0 (1); ah = - 890.4 kga) how much energy is given off when 2.00 mol of ch, are burned? b) how much energy is released when 22.4g of ch. areburned?
Answers: 1
Chemistry, 23.06.2019 08:00, kyle65
Problem page a jet airplane reaches 846. km/h on a certain flight. what distance does it cover in 13.0 min? set the math up. but don't do any of it. just leave your answer as a math expression. also, be sure your answer includes all the correct unit symbols.
Answers: 2
According to "When Is a Planet Not a Planet?" scientists determined that Pluto was not a planet. Wha...
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