a laboratory has a 3.0 mol sample of pure carbon and a 3.0 mol sample of pure helium. how many more grams of carbon do they have than grams of helium?
answer choices:
the carbon sample would have the same mass as the helium sample.
the carbon sample would have two times the mass of the helium sample.
the carbon sample would have three times the mass of the helium sample.
the carbon sample would have six times the mass of the helium sample.
Answers: 2
Another question on Chemistry
Chemistry, 21.06.2019 21:00
Write the chemical symbols for three different atoms or atomic cations with 27 electrons. asap!
Answers: 2
Chemistry, 22.06.2019 11:00
The diagram below shows the different phase transitions that occur in matter. which arrow represents the transition in which dew is formed?
Answers: 1
Chemistry, 22.06.2019 18:00
Hydrogenation reactions, in which h2 and an "unsaturated" organic compound combine, are used in the food, fuel, and polymer industries. in the simplest case, ethene (c2h4) and h2 form ethane (c2h6). if 140 kj is given off per mole of c2h4 reacting, how much heat (in mj) is released when 12 kg of c2h6 forms?
Answers: 2
Chemistry, 22.06.2019 18:30
Asample of hydrated tin (ii) chloride (sncl2) has a mass of 4.90 g. when it is dehydrated, it has a mass of 4.10 g. which is the correct chemical formula for the hydrate? sncl2•2h2o sncl2•4h2o sncl2•6h2o
Answers: 2
You know the right answer?
a laboratory has a 3.0 mol sample of pure carbon and a 3.0 mol sample of pure helium. how many more...
Questions
German, 01.12.2020 19:50
History, 01.12.2020 19:50
Mathematics, 01.12.2020 19:50
Mathematics, 01.12.2020 19:50
Mathematics, 01.12.2020 19:50
Mathematics, 01.12.2020 19:50
Mathematics, 01.12.2020 19:50
Chemistry, 01.12.2020 19:50
Mathematics, 01.12.2020 19:50
Social Studies, 01.12.2020 19:50
Mathematics, 01.12.2020 19:50
Mathematics, 01.12.2020 19:50
Mathematics, 01.12.2020 19:50
