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Harrizon [31]
2 years ago
13

Which best defines a service? a task that is performed in exchange for payment an object that is acquired a plan that is execute

d an image that is drawn
Chemistry
2 answers:
tatiyna2 years ago
8 0

Answer:

a task that is performed for payment

Explanation:

all of the other answers do not pertain to the question

IrinaK [193]2 years ago
6 0

Answer:

the first option is correct (A)

Explanation:

Why would I lie?

:)

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An aqueous solution that has a hydrogen ion concentration of 1.0 x 10^-8 mole per liter has a pH of
spin [16.1K]

Answer: 8, which is basic

Explanation: The hydrogen ion concentration is 1.0 x 10^-8 mole per liter. Using [H+] = 1.0 x 10 -(pH) the pH is 8. A pH above 7 is basic.

7 0
2 years ago
Millions of years ago in many different regions of the world, large-scale burials of organic matter were followed by the formati
kramer
The answer is A: Areas where the geologic process occurred now have major petroleum reserves
5 0
2 years ago
Read 2 more answers
What is the molar mass of CaCl2?
alekssr [168]
Molar mass of CaCl2 = 40+ ( 35.5 ×2)=110

Mr of Ca(OH)2 = 40+ (16+1)×2 =74

%of Ca = (40÷ 74)×10=...

1 m = 100cm...
1cm = (1÷100) m
So 45.5 cm = 45.5 ×(1÷100) =....

1km = 1000m
1m = 100 cm
1cm =10mm
So 1km = 1000×100×10 mm
Now convert
7 0
2 years ago
Why are yeast cells used in making bread?
tatiyna

Answer:

Yeast is used for the leavening of bread. Yeast uses the sugars and oxygen in dough to produce more yeast cells and carbon dioxide gas. The carbon dioxide makes the dough rise which gives the bread a light and spongy texture. Yeast also works on the gluten network.

Explanation:

5 0
2 years ago
How do colloids that exist in nature affect people
mel-nik [20]

The exposure of a person to colloids majorly present in industrial area may results in the accumulation in the body tissue which causes dark deposit in the skin. They are not safe and is dangerous for health which may cause turning of skin blue permanently and it is life long.

Whereas, the colloid of silver nitrate is used to treat skin burns and ulcers but its overuse may result in adverse effect.

4 0
3 years ago
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