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Elodia [21]
3 years ago
13

6 Which of the following would provide the best evidence that air is made of matter? A Making a small hole in a tire and measuri

ng the amount of time it takes for it to become flat B Comparing the mass and volume of an empty balloon to the mass and volume of an inflated balloon C Measuring the temperature of the air in several rooms of varying sizes D Finding the volume of the air between marbles in a jar by pouring water over them​

Chemistry
1 answer:
amm18123 years ago
3 0
Correct answer is B
Y welcome
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AnswerIm telling your teacher "Ms.Byrd" your in 8th grade and go to berry middle?

Explanation:

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3 years ago
How many bromine atoms are present in 37.9 g of CH2Br2?
VARVARA [1.3K]

Answer:

The answer to your question is: 6.55 x 10 ²³ atoms of Br

Explanation:

CH2Br2 = 37.9 g

MW CH2Br2 = (12 x 1) + (2 x 1) + (80 x 2) = 174 g

                   174 g of CH2Br2 ------------------  160 g of Br2

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                         x              ----------------    174 g Be2

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3 years ago
Consider an element Z that has two naturally occuring isotopes with the following percent abundances: the isotope with a mass nu
rodikova [14]

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Z=22.70

Explanation:

It is given that,

An element Z that has two naturally occurring isotopes with the following percent abundances as follows :

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The average atomic mass for element Z is given by :

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So, the average atomic mass for element Z is 22.70.

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Thermochemistry
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hope this helps and please brainliest, I was first :)
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3 years ago
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