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Orlov [11]
3 years ago
10

Contamination of food items by other living organisms is known as?

Chemistry
1 answer:
Elena-2011 [213]3 years ago
6 0
The answer is, "biological-contamination".
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Which kind of energy does matter have when it is in motion?
Rzqust [24]

Answer:

Kinetic Energy

Explanation:

Kinetic energy is the energy inside moving objects of things.

8 0
3 years ago
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Write word equation for reaction between sodium and sulphur​
White raven [17]

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2Na + S —> Na2S

Hope this helps.

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3 years ago
Why empty gas cylinder is dangerous?​
Irina-Kira [14]

Answer:Empty gas cylinders are dangerous because the can explode and cause hazards and empty gas cylinders with open valves can breath,this can cause explosion.

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4 0
2 years ago
What are the 4 factors that makes a good fuel
Paha777 [63]

Hi Jojo


The 4 factors that makes a good fuel are

1) It should be cheap

2)It should not burn too fast or too slowly

3) It should be easily available

4) It should have a high calorific value


I hope that's help !

8 0
3 years ago
PLEASE HELP I HAVE LIMITED TIME!!
n200080 [17]

Answer:

Explanation:

Si tomamos en cuenta el peso molecular del agua, que es equivalente a:

1 Átomo de H₂O

O = 16 gr/mol

H = 1 gr/mol

H₂O = 18 gr/mol

Teóricamente sabemos que en 1 mol de H2O habrá 18 gr.

 

Para obtener los moles presentes en 1 mg de H₂O, (como 1 gr = 1000 mg), decimos:

1 mol H2O …………………………..  18000 mg

       X          ……………………………   1 mg

X = 1 / 18000 = 5,56 X 10⁻⁵ moles de H20

 

Y para obtener la cantidad de moléculas presentes, de acuerdo a los moles, multiplicamos por el número de Avogadro (6,023 X 10²³ moléculas /mol)

Moléculas de H₂O = 5,56x 10⁻⁵ mol x 6,023 x 10²³

Moléculas de H₂O = 3,34488 x10¹⁹ moléculas de H₂O

En el copo de nieve habrá 3,34488 x 10¹⁹ moléculas de H₂O.

Espero que te sirva =)

3 0
3 years ago
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