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pickupchik [31]
3 years ago
12

When is heat exchanged during the refrigeration cycle? During the initial condensation and final expansion of the refrigerant. D

uring the initial expansion and final condensation of the refrigerant. During the pumping of hot air into the expansion valve. During compression and heating of the refrigerant into a super hot vapor.
Chemistry
2 answers:
sattari [20]3 years ago
3 0

Answer:

During the pumping of hot air into the expansion valve.

Ede4ka [16]3 years ago
3 0

Answer:

option C

Explanation:

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How many is too many
Rufina [12.5K]

Answer:

to manyneh nrjwsj

Explanation:

6 0
3 years ago
Please solve for Cu,N,and O an dif you can show how cause ik confused
belka [17]

Cu⇒ 1 atom

N⇒2 atoms

O⇒6 atoms

Total 9 atoms

<h3>Further explanation  </h3>

The empirical formula is the smallest comparison of atoms of compound forming elements.  

A molecular formula is a formula that shows the number of atomic elements that make up a compound.  

<em>(empirical formula) n = molecular formula  </em>

Chemical formula : Cu(NO₃)₂

Number of Cu : 1

Number of N : 2

Number of O = 2 x 3 = 6

Total atoms in Cu(NO₃)₂ : 1 + 2 + 6 = 9

4 0
2 years ago
f 37.4 grams of water decompose at 297 Kelvin and 1.30 atmospheres, how many liters of oxygen gas can be produced?
Allisa [31]
2H2O=2H2+O2
37.4g H2O(1 mol/18.02)=2.07547 mol H2O
PV=nRT
(1.30)(V)=(2.07547)(.0821)(297)
Vwater=38.92898L
38.92898L (1 mol O2/2 mol H2O)=19.46449L O2 gas
4 0
3 years ago
A watt of is a unit of power equivalent to 1 joule per second (1 J/sec). In other words, a 60 watt light bulb consumes 60 joules
Juli2301 [7.4K]

The time the chocolate bar could power the laptop in hours is 0.00233 hrs.

Since 200 Calories of chocolate bar were burned to power the 100 Watt laptop, we need to find the number of joules on energy in 200 calories of chocolate bar.

Knowing that 4.2 Joules = 1 Calorie, then

200 Calories = 200 × 1 calorie = 200 × 4.2 Joules = 840 Joules

Since the power required by the laptop is 100 W = 100 J/s and Power, P = energy/time

so, time = energy/power

So, the time for the laptop to use 840 J of energy from the chocolate bar at a rate or power of 100 W = 100 J/s is

time = 840 J ÷ 100 J/s = 8.4 s

So, the time in hours is 8.4 s ÷ 3600 s/1 h = 0.00233 hrs (since 1 hr = 3600 s)

So, the time the chocolate bar could power the laptop in hours is 0.00233 hrs.

Learn more about time to power here:

brainly.com/question/17732603

7 0
2 years ago
Match the words to the appropriate blanks in the sentences.
Mariulka [41]

Answer:

a. NO2

b. NH3

c. CO2

Explanation:

a. For the pair of compounds CO2 or NO2 the one with the highest boiling point is __________ .

The answer is NO2. It has a higher boiling point than CO2 because it exhibits dipole-dipole interactions.

b. For the pair of compounds NH3 or CH4 the one with the highest boiling point is _________

NH3 has a higher boiling point compared to CH4. This is due to the presence of the hydrogen bonds in NH3,

c. For the pair of compounds CS2 or CO2 the one with the highest boiling point is _________

CS2 has a higher boiling point than CO2. This is because of the high molecular mass of CS2.

7 0
3 years ago
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