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Art [367]
2 years ago
15

What type of observation can be stated with just numbers?

Chemistry
1 answer:
djverab [1.8K]2 years ago
7 0

Answer:

D. Quantitative

Explanation:

Quantitative observation deals with numbers, or amounts.

Qualitative observation deals with de- scriptions that cannot be expressed in numbers.

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Explain how carbon monoxide can cause death
Anvisha [2.4K]

Answer:

Carbon monoxide is not breathable.

Explanation:

If you breath in Carbon monoxide you'll first pass out from the lack of Oxygen. If Oxygen does not reach your lungs in time death will occur from suffocation.

4 0
3 years ago
Choose two ways carbon returns to nature from animals
SVEN [57.7K]

Answer:

its D and C I did the test

8 0
3 years ago
The human body excretes nitrogen in the form of urea, NH₂CONH₂. The key step in its biochemical formation is the reaction of wat
Misha Larkins [42]

Mass perventage of nitrogen in urea, arginine, ornithine is   46.67%, 32.2%,21% respectively.

What is Mass perventage ?

Mass percentage is one way of representing the concentration of an element in a compound or a component in a mixture. Mass percentage is calculated as the mass of a component divided by the total mass of the mixture, multiplied by 100.

Molecular mass of urea (NH2CONH2) is= 2× (Atomic mass of N ) + 4 × (Atomic mass of H) + (Atomic mass of C) (Atomic mass of O) = 60

Mass percentage of N = Total mass of N atoms in the compoundMass of compound×100=2860×100=46.67%

chemical formula for arginine is C6H14N4O2

molar mass of C6H14N4O2=174g/mol

moles of N atoms in C6H14N4O2=4

mass of N atoms=14*4=56g

mass percent of N in C6H14N4O2=(56/174)*100=32.2%

the chemical formula for ornithine is C5H12N2O2

molar mass of C5H12N2O2=132g/mol

moles of N atoms in C5H12N2O2=2

mass of N atoms in C5H12N2O2=2*14=28

mass percent of N in C5H12N2O2=(28/132)*100=21%

To learn more about urea click on the link below:

brainly.com/question/17812875

#SPJ4

7 0
1 year ago
Classify each of the following properties by writing physical or chemical matter
Ivenika [448]
1. Physical matter
2. Chemical matter
3. Physical matter
4. Physical matter
5. Chemical matter
6. Physical matter.
6 0
2 years ago
PLEASE HELP ME URGENT!!! How do i find mass when not given in chemistry
Arisa [49]

Answer:

It depends what other values you have. Can you give more info? If they give density then you can solve for m.

3 0
2 years ago
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