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mafiozo [28]
3 years ago
9

Why is important to use the same ink dots for both the alcohol and oil experiments?

Chemistry
1 answer:
patriot [66]3 years ago
3 0
So you don’t mess it up
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What is a single<br> replacement rxn?
jeka94

Answer:

A reaction in which one element replaces another element in a compound.

7 0
4 years ago
Organisms that are producers
goldfiish [28.3K]

Answer:

Grass, trees, and flowers.

Explanation:

A producer converts the suns energy to make its own food, and a producer uses photosynthesis.

7 0
3 years ago
A human lung at maximum capacity has a volume of 3.0 liters. If the partial pressure of oxygen in the air is 21.1 kilopascals an
Juliette [100K]

V = maximum capacity of human lung = 3 liter = 3 x 0.001 m³ = 0.003 m³      (Since 1 liter = 0.001 m³)

P = pressure of oxygen = 21.1 kilo pascal = 21.1 x 1000 = 21100 Pa      (since 1 kilo = 1000)

T = temperature of air = 295 K

n = number of moles of oxygen

Using the ideal gas equation

PV = n RT

inserting the above values in the equation

(21100) (0.003) = n (8.314) (295)

n = 0.026 moles



4 0
3 years ago
A sample of an ionic compound containing iron and chlorine is analyzed and found to have a molar mass of 126.8 g/mol. what is th
julsineya [31]
Answer is: <span>the charge of the iron in this compound is +2.
Atomic mass of iron is 55,8 g/mol.
Atomic mass of chlorine is 35,5 g/mol.
If compound is FeCl, molar mass would be 55,8 </span>g/mol + 35,5 g/mol = 91,3 g/mo, that is not correct.
If compound is FeCl₂, malar mass of compound would be:
55,8 g/mol + 2·35,5 g/mol = 126,8 g/mol, that is correct.
Oxaidation number of chlorine is -1.
5 0
3 years ago
Read 2 more answers
Is oxygen a necessary reactant for oxidation reaction ​
storchak [24]

Answer:

Oxidation: A process in which an atom loses an electron and therefore increases its oxidation number. ... So oxidation reactions need not involve oxygen. This redox reaction is actually the sum of two separate half-reactions (a reduction half-reaction and an oxidation half-reaction).

Explanation:

Hope this helped!

3 0
3 years ago
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