1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
skad [1K]
3 years ago
12

How is electromagnetic energy fromthe microwave transformed into heat energy

Chemistry
2 answers:
zysi [14]3 years ago
6 0

Answer:


First, the microwaves transmit kinetic energy to the water molecules of the food, heating the water molecules. Only, those that are not very deep into the food.


Second, the hot water molecules transmit heat by conduction to the other parts of the food.


Explanation:


1) Microwaves are a form of electromagnetic radiation. The same as any wave, they carry energy.


2) The wave length of microwaves are in the range of 0.001 mm to 1 m (shorter than radio waves and longer than infrared)


3) The microwaves of an oven, used to heat food, have a wave length aroun 12 cm.


4) The microwaves transmit energy to the water molecules in the food, by increasing the kinetic energy of water molecules. As result, the water molecules get hotter. Microwaves only penetrate about 1 cm inside the food (a potato for example) and from that the heat is transferred by conduction to the inner parts of the food.

Marizza181 [45]3 years ago
3 0
When light hits a white surface, rays are reflected. When light hits a black surface the light is changed to heat.

Infrared is electromagnetic energy. When it hits a material it causes the molecules to move faster which is showing more energy

Microwave energy is used to make food molecules hotter in the way explained above.
You might be interested in
HELP I NEED TO GET THIS FINISHED ASAP
andreyandreev [35.5K]

Answer: Cell A & Sex of rabbit

Cell A is a Sperm Which mean is a male cuz males have sperms

Explanation: Explain why the offspring os not genetically identical to either parents  

I don't know how to answer that one

3 0
3 years ago
If the temperature of the water an ice cube is placed in is ______________, then the ice cube will melt __________.
Anit [1.1K]

Answer:

I have no clue what is being asked in the second half of the question.  Is there some context from which the question is taken?

Explanation:

If the temperature of the water an ice cube is placed in is <u>___above 0°C__</u>, then the ice cube will melt <u>_unless you remove it??_________</u>.

8 0
2 years ago
If you start a chemical reaction with 5 atoms of hydrogen, how many hydrogen atoms will you have when it is finished? Group of a
mote1985 [20]

Answer:

5 atoms

Explanation:

According to the law of conservation of mass, "matter is neither created nor destroyed in the cause of a chemical reaction".

We finish with what we start with in a chemical reaction. Although new species might form, the number of atoms on both sides of the expression will still be maintained.

All chemical reactions obey this law of conservation.

8 0
3 years ago
A 1 mol sample of gas has a temperature of 225K, a volume of 3.3L, and a pressure of 500 torr. What would the temperature be if
serg [7]
<h3>Answer:</h3>

78.75 K

<h3>Explanation:</h3>

<u>We are given;</u>

  • Initial pressure, P₁ = 500 torr
  • Initial temperature,T₁ = 225 K
  • Initial volume, V₁ = 3.3 L
  • Final volume, V₂ = 2.75 L
  • Final pressure, P₂ = 210 torr                        

We are required to calculate the new temperature, T₂

  • To find the new temperature, T₂ we are going to use the combined gas law;
  • According to the combined gas law;

P₁V₁/T₁ = P₂V₂/T₂

We can calculate the new temperature, T₂;

Rearranging the formula;

T₂ =(P₂V₂T₁) ÷ (P₁V₁)

  = (210 torr × 2.75 L × 225 K) ÷ (500 torr × 3.3 L)

  = 78.75 K

Therefore, the new volume of the sample is 78.75 K

5 0
3 years ago
Can someone explain these?​
elena-s [515]

Answer:

what??

Explanation?/

6 0
3 years ago
Other questions:
  • Liquid carbon disulfide (CS2) reacts with 44.8 L O2 gas to produce the gases carbon dioxide (CO2) and sulfur dioxide (SO2). What
    6·2 answers
  • Which one is denser? question 2 options: the earth (a solid object) the sun, which is about 300,000 times more massive than the
    11·1 answer
  • A(n) ____ is an abbreviation for the name of an element and has either one or two letters.
    6·1 answer
  • A 0.100 L sample of an unknown HNO3 solution required 51.3 mL of 0.250 M Ba(OH)2 for complete neutralization. What is the concen
    12·1 answer
  • The change in entropy in the sublimation of solid co2 is expected to be
    13·1 answer
  • Cellulose could provide an abundant and cheap form of glucose for humans. Why is cellulose not a source of nutrients for humans?
    8·1 answer
  • Is backbonding is possible in BF4- ? If no then why?
    8·1 answer
  • How are reactants different than products?<br>​
    7·1 answer
  • A) F-F
    11·1 answer
  • What charge (positive, negative, neutral) does the complete atom<br> have?
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!