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Basile [38]
3 years ago
15

True or False: All material has the same density.

Chemistry
2 answers:
AlexFokin [52]3 years ago
8 0

Answer:

The answer is False

Burka [1]3 years ago
4 0

Answer:

Different materials have different densities. So it is False

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A hydrogen filled balloon has a volume of 8.3 L at 36°C and 751 mmHg. How many moles of hydrogen are inside the balloon?
tamaranim1 [39]

Answer: I think the formula is PV=nRT and I divide both sides by RT, but this is as far as I can get in my equation before I get stumped: (751 mm Hg) (8.3 L)/ (309 K) Can you help?

Explanation:

8 0
3 years ago
A chemical equation is shown: C2H4 + O2 → CO2 + H2O According to the law of conservation of mass, how many atoms of oxygen exist
astraxan [27]

Answer:

6 oxygens on the product side

Explanation:

1) balance the equation:

C2H4 + 3O2 → 2CO2 + 2H2O

2) calculate the number of oxygens on the product side

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6 0
3 years ago
Lindsey is trying to gain credibility for her studies. She completed her experiment and discussed her finding with colleagues. H
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Answer:

Option B:Publishing scientific journals

Explanation:

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Since she completed her experiment and discussed her finding with colleagues, the most logical next step would be to publish scientific journals. This is because the other options given are not steps that should be taken because she has completed the research and therefore has no need to speak at a conference next nor even create new charts which they must have done during the research. No need for her to make sure the topic is popular.

Option B is correct

8 0
3 years ago
Sodium metal reacts with water to produce hydrogen gas.
Kobotan [32]

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5 0
3 years ago
Read 2 more answers
ASAP please and thankyou<br><br>Options:<br>pollen<br>pistil<br>purple<br>white​
AURORKA [14]

Answer:

pistil

Explanation:

5 0
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