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Oksanka [162]
3 years ago
15

Why does food wrapped in aluminum foil keep warm for a long time? A) Aluminum foil is an insulator and prevents heat loss by con

duction. B) Aluminum foil forms an air-tight seal and prevents heat loss by convection. C) The silver surface of the foil reflects heat in and prevents heat loss by radiation. D) The silver surface of the foil absorbs heat from the surroundings and keeps the food warm.
Chemistry
2 answers:
vlabodo [156]3 years ago
8 0

the correct answer is c.


denis-greek [22]3 years ago
3 0

The answer is A or D  

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Iron forms rust, expressed as Fe2O3.
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What are some differences between Boiling & Evaporation?
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3 0
3 years ago
Read 2 more answers
What takes up the vast majority of space in an atom?
yKpoI14uk [10]

The answer is: a relatively large electron cloud.

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7 0
3 years ago
What is the molarity of a solution that contains 1000.0 mg of AgNO3 that has been dissolved in 500 mL of water
Vaselesa [24]

0.012moldm⁻³

Explanation:

Given parameters:

Mass of AgNO₃  = 1000mg

Volume of water = 500mL

Unknown:

Molarity of solution  = ?

Solution:

The molarity of a solution is the number of moles of a solute dissolved in volume of solvent.

 Molarity = \frac{xnumber of moles}{Volume}

 

Number of moles of AgNO₃  = ?

   Number of moles = \frac{mass}{molar mass}

Molar mass of AgNO₃ = 108 + 14 + 3(16) = 170g/mol

   convert mass to g;

      1000mg = 1g

 Number of moles  = \frac{1}{170}  = 0.00588moles

   convert the given volume to dm³;

       1000mL  = 1dm³;

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Now solve;

  Molarity = \frac{0.00588}{0.5}  = 0.012moldm⁻³

learn more:

Molarity brainly.com/question/9324116

#learnwithBrainly

4 0
3 years ago
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