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
Novay_Z [31]
3 years ago
9

When shopping for major appliances, people should look for high energy-rating numbers because those items _____.

Chemistry
2 answers:
madam [21]3 years ago
6 0
The answer would be :Use less energy
Dmitry_Shevchenko [17]3 years ago
3 0

Answer:

Use less energy.

Explanation:

Hello,

High energy consumption implies higher costs during the usage of a product, nevertheless, by avoiding this factor, money could be saved in addition of the environmental damage that is prevented in the light of the lower energy use.

Best regards.

You might be interested in
Which describes an covalent bond?
Ilya [14]

Answer:

is there choices you have to pick from

Explanation:

or do you have to describe a covalent bond ?

8 0
3 years ago
Read 2 more answers
The average weather conditions of a region
Verdich [7]

Answer:

A) Climate

Hope this helps !

6 0
3 years ago
What is the standard unit used to measure mass?<br><br> cubic meters<br> gram<br> liter<br> meter
azamat
Your answer is grams
8 0
3 years ago
Read 2 more answers
The scientific method is a strict of steps that are always followed in the same order true or false
Sav [38]

False

hope it helps comment if you have any questions hope you have an amazing day

8 0
3 years ago
Read 2 more answers
It has been suggested that the surface melting of ice plays a role in enabling speed skaters to achieve peak performance. Carry
Fittoniya [83]

Answer:

a) Pf = 689.4 bar

b) P = 226.6 bar

c) T = 269.99 K

Explanation:

a)

The molar volume of ice is equal to:

Vi = m/p = (18.02x10^-3 kg H2O/1 mol H2O)*(1 m^3/920 kg) = 1.96x10^-5 m^3 mol^-1

The molar volume of liquid water is equal to:

Vl = (18.02x10^-3 kg/1 mol)*(1 m^3/997 kg) = 1.8x10^-5 m^3 mol^-1

The change in volume is equal to:

ΔVchange = Vi-Vl = 1.96x10^-5 - 1.8x10^-5 = 1.5x10^-6 m^3 mol^-1

using the Clapeyron equation:

Pf = Pi + ((ΔHf*ΔT)/(ΔVf*Ti)) = 1.013x10^5 Pa + ((6010 J mol^-1 * 4.7 K)/(1.5x10^-6 * 273.15 K)) = 6.89x10^7 Pa = 689.4 bar

b)

For the pressure we will use the equation:

P = (m*g)/A, where m is the mass, g is the acceleration of gravity and A is the area. Replacing values:

P = (79 kg * 9.81 m s^-2)/(1.9x10^-4 m * 0.18 m) = 2.26x10^7 Pa = 226.6 bar

c)

From Clapeyron´s expression we need to clear ΔT:

ΔT = ((Pf-Pi)*ΔV*Ti)/ΔHf = ((2.26x10^7 - 6.89x10^7)*1.5x10^-6*273.15)/6010 = -3.16 K

you can evaluate the new melting point of ice:

T = Ti + ΔT = 273.15 K - 3.16 K = 269.99 K

4 0
3 years ago
Other questions:
  • Which properties are characteristic of metalloids
    5·2 answers
  • Which of the following compounds would be named with a name that ends in -yne?
    9·2 answers
  • Does the nucleus (protons and neutrons) weigh more than the electrons?
    10·2 answers
  • How many moles of CoH12O6 are consumed<br> if 6 moles of O2 are consumed?
    12·1 answer
  • Question 7 of 32
    12·1 answer
  • Which one of the following would you expect to dissolve in water? limonene sucrose oil atmospheric oxygen none of the above
    12·1 answer
  • What are two objects used to find density
    13·1 answer
  • what must happen first before a change of state can occur (change in mass, change in position, change in volume, or change in en
    11·1 answer
  • Which represents the greatest mass of fluorine?
    15·1 answer
  • This is the question pls help me
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!