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
Maru [420]
3 years ago
5

In an area in which electricity costs 8 cents/kilowatt-hour, a 5 kW clothes dryer runs for 90 minutes to dry a load of laundry.

How much did it cost to dry these clothes?
Chemistry
1 answer:
Orlov [11]3 years ago
4 0
90 minutes is 1.5 hours.

5 kW * 1.5 hours = 7.5 kWh

8c/kWh * 7.5 kWh = 60 cents
You might be interested in
Would any Chemistry braniacs be kind enough to help explain how to work these out? Any help is appreciated, thanks
o-na [289]

Answer:

NO.3) Mass of Al2O3 formed = 229.5g

7 0
2 years ago
If a 5¢ coin has a mass of 5.07 g and is 75.0% copper, what is the mass of copper in the coin?
ollegr [7]

Answer:

3.80g

Explanation:

5 0
3 years ago
A 0.2121g sample of an organic compound was burned in a stream of oxygen and the carbon dioxide produced was collected in a stre
pav-90 [236]

Answer:

The answer to your question is: 17.26% of carbon

Explanation:

Data

CxHy = 0.2121 g

BaCO₃ = 0.6006 g

Molecular mass BaCO₃ = 137 + 12 + 48 = 197 g

Reaction

                    CO₂  +  Ba(OH)₂  ⇒   BaCO₃  +  H₂O

Process

1.- Find the amount of carbon in BaCO₃

                              197 g of BaCO₃   ---------------  12 g of Carbon

                               0.6006 g           ----------------    x

                               x = (0.6006 x 12) / 197

                               x = 0.0366 g of carbon

2.- Calculate the percentage of carbon in the organic compound

           0.2121 g of organic compound  ---------------  100%

           0.0366g                                       --------------    x

                              x = (0.0366 x 100) / 0.2121

                              x = 17.26%

4 0
3 years ago
-
VLD [36.1K]

Answer:

arthropod

Explanation:

hope this helps

pls mark as brainliest

8 0
2 years ago
Which of the following is an example of a longitudinal wave?
Genrish500 [490]

An example of a longitudinal wave would be the first option:

<em>"A wave traveling down a stretched Slinky toy, with both ends held</em>

<em>fixed"</em>

<h3>What is a longitudinal wave?</h3>

A longitudinal wave is a wave that oscillates in the same direction that the wave moves.

For example, the option D would not be a longitudinal wave, as the wave travels along the string direction, but the oscillations would be up and down, so this is a transversal wave.

Similarly with option C, water waves, where you can see how the waves expand radially with peaks and throughs, but again, the peaks and throughs are perpendicular to the motion direction, so again this is not a longitudinal wave (the same thing happens with the wave on the surface of a drum, only that here the patterns may be a lot more complex).

Finally, the correct option is A.

The oscillations on a spring are back and forth, so the oscillations are in the same directions than the wave motion, thus, these are longitudinal waves.

If you want to learn more about waves, you can read:

brainly.com/question/15531840

8 0
2 years ago
Other questions:
  • Rocks formed by changes in heat and pressure or the presence of hot, watery fluids
    7·2 answers
  • Calculate the specific heat capacity of a piece of ice if 1.30 kg of the wood absorbs 6.75×104 joules of heat, and its temperatu
    11·2 answers
  • 4. Describe in detail the relationship between chemical bonds and energy. What must be true of the bonds for a reaction to be en
    9·1 answer
  • What is the error in the electron configuration, 1s2 2s2 2p6 3s2 3p5 4s2?
    7·1 answer
  • How many hydrogen atoms are attached to each carbon participating in a double bond?
    6·1 answer
  • 4Fe +302 + 2Fe2O3 <br> How many grams of Fe2O3 will be produced from 10.0 g of Fe and 7.00 g of O2?
    13·1 answer
  • Please balance the equation, putting the correct coefficient in each box.
    14·1 answer
  • A boy swings a rubber ball attached to a string over his head in a horizontal, circular path. The piece of string is 1.15 m long
    14·1 answer
  • in the mitochondria, we use _______ as a way of making the fuel for our cells which is termed as _______
    13·1 answer
  • What will be the primary result of the continuation of the
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!