subject
Chemistry, 25.06.2020 02:01 xcji2277

A balloon containing helium gas expands from 230 mL to 860 mL as more helium is added. What was the initial quantity of helium present if the expanded balloon contains 3.8 × 10-4 mol, assuming constant temperature and pressure? Which of the variables are known?

ansver
Answers: 2

Another question on Chemistry

question
Chemistry, 21.06.2019 22:20
One or more substances changing into one or more substances is an example of a
Answers: 1
question
Chemistry, 22.06.2019 19:00
Suppose that a certain fortunate person has a net worth of $71.0 billion ($7.10×1010). if her stock has a good year and gains $3.20 billion (3.20×109) in value, what is her new net worth?
Answers: 3
question
Chemistry, 23.06.2019 00:30
Which radioisotope is used to date fossils? a. oxygen-16 b. carbon-14 c. uranium-238 d. carbon-12
Answers: 2
question
Chemistry, 23.06.2019 01:30
Ascientist conducted an experiment and discovered that certain plants grow faster when given a particular amount of fertilizer. anouther scientist conducted the same experiment and got similar results. which concept does this best illustrate? a) repetition b) replication c) precision d) validity
Answers: 2
You know the right answer?
A balloon containing helium gas expands from 230 mL to 860 mL as more helium is added. What was the...
Questions
question
Social Studies, 31.03.2020 04:44