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Sophie [7]
3 years ago
9

Which of the following is a pure substance? A. Air B. carbon dioxide C. soda D. salt water

Chemistry
2 answers:
VLD [36.1K]3 years ago
6 0
Hey There,

The answer to your Problem is 

B. Carbon Dioxide

If this Helps May I have Brainliest?
uysha [10]3 years ago
4 0
B- Carbon dioxide, every other option listed is composed of more than one thing.
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HRISTINA HERRERA: Attempt 1
Lunna [17]

Answer:

7.5 g of hydrogen gas reacts with 50.0 g oxygen gas to form 57.5 g of water.

Explanation:

Here we have the check if the mass of the reactants is equal to the mass of the products.

Reactants

7.5+50=57.5\ \text{g}

Products

57.5\ \text{g}

The data is consistent with the law of conservation of matter.

Reactants

50+243=293\ \text{g}

Products

206+97=303\ \text{g}

The data is not consistent with the law of conservation of matter.

Reactant

17.7+34.7=52.4\ \text{g}

Products

62.4\ \text{g}

The data is not consistent with the law of conservation of matter.

Only the first data is consistent with the law of conservation of matter.

8 0
3 years ago
Sodium atoms differ from sodium ions in that sodium atom contains
Olenka [21]

Explanation:

sodium atom is neutral while sodium ion is a charged specie with a charge of +1

3 0
3 years ago
Ocean tides observed at coastal locations each day are primarily caused by what?
Andru [333]
Ocean tides are caused by mostly wind but can also be caused by earthquakes
4 0
3 years ago
Read 2 more answers
Does the sound wave above experience a change in pitch or loudness? Why?
Basile [38]

My Apoligies for not being sooner.

Answer: The closer the particles get or the further apart they get, the greater the sound's amplitude. Sound amplitude causes a sound's loudness and intensity. The bigger the amplitude is, the louder and more intense the sound. - (This is copied)

General Answer : Its a change in sound, bassically the bigger the waves are, the louder the sound is.

4 0
2 years ago
How many atoms of germanium<br> are present in a sample<br> containing 1.65 moles Ge?
otez555 [7]

Answer:

9.9363 x 10^23  atoms

Explanation:

1.65   x   Avagadro's Number

1.65 * 6.022 x 10^23 =

5 0
2 years ago
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