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3 years ago

The operations of a cell are directed by the

Chemistry

1 answer:

8_murik_8 [283]3 years ago

3 0

Answer:

Nucleus. This structure directs all of the cell's activities, including reproduction.

Ribosomes. These small structures function as factories to produce proteins.

Cytoplasm. The area between the cell membrane and the nucleus. It contains a gel-like fluid.

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What is the speed of a car that has traveled 100 miles in 20 hours? |

77julia77 [94]

Answer:

5 mph

Explanation:

100 miles, 20 hours (divide by 2)

50 miles, 10 hours (divide by 2)

25 miles, 5 hours (divide by 2)

divide both sides by 5

5 miles, 1 hour

3 0

3 years ago

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Plants and animals can cause weathering of rocks. True or false

Keith_Richards [23]

True hope this helps you.

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3 years ago

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Consider the following four structures: What is the relationship of I and II? What is the relationship of I and III? What is the

daser333 [38]

Answer:

The different structures are shown in the attachment.

I and II - structural isomers

I and III - Structural isomers

I and IV - structural isomers

II and III - structural isomers

II and IV - structural isomers

III and IV - stereoisomers

Explanation:

The knowledge of Isomerism is tested here; there are two types of isomerism ; structural and stereoisomerism.

Structural Isomers have similar molecular and different double bond positioning, these occurs mostly in ALKENE FAMILY.

Stereo-isomers have the same molecular formular and similar patterns but differ in their spatial arrangement. trans and cis are typical examples of stereo-isomers.

From the question; Relationship between I and II is that they are structural isomers since they have the same molecular formula, but different bond atom arrangement and infact they are the same compound.

Relationship between I and III is that they are structural isomers with similar molecular formular but differ in the double bond position.

Relationship between I and IV is that they are structural isomers with similar molecular formula but different double bond arrangement.

Relationship between II and III is that they are structural isomers with similar molecular formular but different double bond position

Relationship between II and IV is that they are also structural isomers with the same molecular formular but different double bond position.

Relationship between III and IV is that they are stereo-isomers with same molecular formula but different spatial arrangement, hence cis and trans.

4 0

4 years ago

Helpppppppp plzzzzzz asaaaapppp

9966 [12]

Answer:

Alright, the first thing we have to do is to balance the chemical equation

2Na3N -----> 6Na + 1N2

We have 60g of Na3N, we convert them into moles by dividing the mass of the compound by the molar mass.

Molar mass of Na3N = (22.98 x 3) + (14) = 82.94g/mol

60 = 0.72341451651 moles of Na3N

82.94

Now because we did the balanced equation, we know the mole to mole ratio of Na3N to N2 would be 2:1, so in order to get the moles of N2 you have to divide the moles of Na3N by 2

0.72341451651 moles/2 = 0.361707258 moles of N2

Now that we have the moles of N2, we just have to determine the mass of it in grams. In order to do that, just multiply the moles by the molar mass of N2 (28g/mol)

0.361707258 x 28 = 10.13g of N2

Therefore the decomposition of 60g of Na3N would result in 10.13g of N2 (nitrogen gas)

3 0

3 years ago

Please help asap!!!!!!!

Slav-nsk [51]

Answer:

Explanation:

Power is measured in Watts, and can we calculated by taking the work done in joules / the time in seconds. Thus, 1 Watt is 1 joule per 1 second (1 Watt = 1J/s)

6 0

2 years ago

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