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Vlada [557]
3 years ago
8

Which observations would have been consistent with Marie Curie's work? Check all that apply.

Chemistry
1 answer:
Ne4ueva [31]3 years ago
6 0

Answer:2,3,4

Explanation:

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plants are able to carry out photosynthesis because they contain the organelle known as an mitochondrion . is that true or false
MakcuM [25]
That's false. Animals have mitochondria too. It's responsible for cellular respiration, not photosynthesis. 
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4 years ago
Why the mixture of bromine and ethane is discoloured when left in the sun​
DENIUS [597]

Answer:

In the presence of UV light, ethane will react with bromine in a substitution reaction. UV light is the condition under which the reaction will occur so it is written above the arrow in the chemical equation. As the reaction proceeds, the intensity of the re-brown colour of the bromine water decreases.

8 0
2 years ago
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Which of the following is a true statement about bacteria, based on what Tim and Moby explained??
allsm [11]
I believe it’s D

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5 0
3 years ago
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When nitrogen dioxide (NO2) from car exhaust combines with water in the air, it forms nitric acid (HNO3), which causes acid rain
Gekata [30.6K]

Answer:

n_{HNO_3}=0.584molHNO_3

Explanation:

Hello.

In this case, given the described reaction, the formation of nitric acid turns out:

NO_2+H_2O\rightarrow HNO_3

Since two hydrogen atoms are present at the reactants we balance it as follows:

3NO_2+H_2O\rightarrow 2HNO_3+NO

In such a way, since there is a 1:2 mole ratio between water and nitric acid, the produced moles of nitric acid, turns out:

n_{HNO_3}=0.292molH_2O*\frac{2molHNO_3}{1molH_2O}\\\\ n_{HNO_3}=0.584molHNO_3

Best regards!

5 0
3 years ago
How many moles of oxygen are needed to completey react with 9.5g of sodium
Harlamova29_29 [7]
0.1033 moles of oxygen is needed to completely react with 9.5 G of Na.
7 0
2 years ago
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