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4 years ago

Question 3

Chemistry

1 answer:

adoni [48]4 years ago

7 0

Answer:

D. Territory

Explanation:

Territory is defined as an area that is claimed by one or more individuals.

Territory is often used as a form of ownership of land or water mass between two parties. It is important as it gives each party a knowledge of their designated areas.

This validates it being an area that is claimed by one or more parties as organisms use that to protect their interest of food, water and mates for their survival.

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A fertilizer is 60.9% ammonium phosphate. What is the percent P in the sample? Answer in units of %

PtichkaEL [24]

Answer:- 12.7%

Solution:- It says, ammonium phosphate is 60.9%. It means if we assume 100 g of the sample then there is 60.9 g ammonium phosphate in it.

Formula of ammonium phosphate is $(NH_4)_3PO4$ and it's molecular weight is 149 grams per mol. There is only one P in the formula and so the mass of P in 149 g of ammonium phosphate is 31 g(atomic mass of P).

Now, we could use the proportions to find out the mass percentage of P in the sample.

31 g P is present in 149 g of ammonium phosphate, how many grams of P would be present in 60.9 g of ammonium phosphate. Let's set the proportions as:

$\frac{31}{149}=\frac{x}{60.9}$

$x=\frac{31(60.9)}{149}$

$x=12.7$

This 12.7 g of phosphorous is present in 100 g of the sample means there is 12.7% phosphorous in the sample.

3 0

3 years ago

A ________________ is formed when two or more __________ bond by a covalent bond.

sergey [27]

Compound is formed when two or more atomic bond (or atom)

3 0

4 years ago

Compound A (C9H12) shows prominent peaks in its mass spectrum at m/z 120 and 91. Compound B (also C9H12) shows prominent peaks a

vodka [1.7K]

Answer:

Compound A: Propylbenzene

Compound B: Cumene

Explanation:

On this case, we have two clues:

1) The mass spectrometry info

2) The formation of benzoic acid

If we have the formation of benzoic acid with a strong oxidant ( $H_2CrO_4$ ). It means that we have an alky group bonded to benzene. Therefore we have to add three carbons to a benzene ring in order to obtain the mass of the compound (120).

The next question is how these three additional carbons are bonded to the benzene. For this, we have to check the mass info. For compound A we have a fragmentation moeity on 91 therefore we have a loss of an ethyl group. Therefore compound A have a linear structure for the aditional three carbons.

For compound B we have a fragmentation moeity on 105 this means a loss of 15 units of mass therefore we loss a methyl group. This indicates that we have a non linear structure fo the three additional carbons.

See figures 1 and 2.

I hope it helps!

7 0

4 years ago

Please help- D; . . . . .

Rama09 [41]

Answer: Silicon dioxide

Explanation:

di is 2 and since oxygen is 2

7 0

3 years ago

Is a Animal and Plant cell living

Mila [183]

Yes Animal and plant are cell living

7 0

3 years ago