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
zepelin [54]
3 years ago
7

Compare the amount of carbon dioxide released in one year from burning coal to power 10, 65-watt incandescent bulbs with the amo

unt released from powering 10, 13-watt compact fluorescent light (CFL) bulbs. Assume the bulbs are on four hours per day for 365 days. You will need to determine the kilowatt hours (kWh) used. First, multiply the wattage of the bulbs by the number of light bulbs to determine the total watts used in one hour. Then multiply the result by time in hours to obtain the watt hours. Next, divide the result by 1000 to obtain kilowatt hours. On average, 2.1 pounds of carbon dioxide are released for every kWh of electricity produced.
Chemistry
1 answer:
Ahat [919]3 years ago
8 0

Answer:

Incandescent bulbs: carbon dioxide released ≈ 1993 pounds

CFL bulbs: carbon dioxide released ≈ 399 pounds

Therefore, CFL bulbs release less amount of carbon dioxide as compared to Incandescent bulbs.

Explanation:

Incandescent bulbs:

Total watts = 10*65

Total watts = 650 watts

watt hours in 1 day = 650*4

watt hours in 1 day = 2600 Wh

In one year,

watt hours in 365 days = 2600*365

watt hours in 365 days = 949000 Wh

Convert into kilowatt hours

kilowatt hours in 365 days = 949000/1000

kilowatt hours in 365 days = 949 kWh

2.1 pounds of carbon dioxide is released for 1 kWh

carbon dioxide released = 949*2.1

carbon dioxide released ≈ 1993 pounds

Compact fluorescent light (CFL) bulbs:

Total watts = 10*13

Total watts = 130 watts

watt hours in 1 day = 130*4

watt hours in 1 day = 520 Wh

In one year,

watt hours in 365 days = 520*365

watt hours in 365 days = 189800 Wh

Convert into kilowatt hours

kilowatt hours in 365 days = 189800/1000

kilowatt hours in 365 days = 189.8 kWh

2.1 pounds of carbon dioxide is released for 1 kWh

carbon dioxide released = 189.8*2.1

carbon dioxide released ≈ 399 pounds

Conclusion:

Therefore, CFL bulbs release less amount of carbon dioxide (399 lb) as compared to Incandescent bulbs (1993 lb)

You might be interested in
In an experiment, you measure a solution absorbance of 0.2 with a path length of 1cm. If the molar absorptivity coefficient is 5
postnew [5]

A solution has an absorbance of 0.2 with a path length of 1 cm. Given the molar absorptivity coefficient is 59 cm⁻¹ M⁻¹, the molarity is 0.003 M.

<h3>What does Beer-Lambert law state?</h3>

The Beer-Lambert law states that for a given material sample, path length and concentration of the sample are directly proportional to the absorbance of the light.

A solution has an absorbance of 0.2 with a path length of 1 cm. Given the molar absorptivity coefficient is 59 cm⁻¹ M⁻¹, we can calculate the molarity of the solution using the following expression.

A = ε × b × c

c = A / ε × b

c = 0.2 / (59 cm⁻¹ M⁻¹) × 1 cm = 0.003 M

where,

  • A is the absorbance.
  • ε is the path length.
  • b is the molar absorptivity coefficient.
  • c is the molar concentration.

A solution has an absorbance of 0.2 with a path length of 1 cm. Given the molar absorptivity coefficient is 59 cm⁻¹ M⁻¹, the molarity is 0.003 M.

Learn more about the Beer-Lambert law here: brainly.com/question/12975133

7 0
2 years ago
Substances that are considered acidic are also called alkaline, true or false
V125BC [204]
False
Alkaline is something we use everyday
Acid is something sour eg lemons
7 0
3 years ago
Read 2 more answers
Which is an example of an instinct?
kompoz [17]

Answer:

An innate, typically fixed pattern of behavior in animals in response to certain stimuli.

5 0
2 years ago
Can someone help pls
zysi [14]
What is the problem u need help with
3 0
3 years ago
How equation can show physical states and reaction conditions
GarryVolchara [31]

Answer:

Explanation:

In a chemical equation, the reactants are written on the left, and the products are written on the right. Chemical equations should contain information about the state properties of products and reactants, whether aqueous (dissolved in water — aq), solid (s), liquid (l), or gas (g). hope that helped

7 0
3 years ago
Read 2 more answers
Other questions:
  • The prefix centi- means (2 points) Select one: a. 103 b. 10-2 c. 10-3 d. 102
    13·1 answer
  • Which phase of matter has a fixed volume but variable shape?
    7·2 answers
  • According to the Lewis dot structure shown here how may valence electrons does chlorine have
    14·1 answer
  • 1. What two phases of matter make up fluids?​
    13·2 answers
  • How does the diaphragm aide in breathing?
    9·2 answers
  • Which unit can be used to express the rate of a reaction?
    13·2 answers
  • Ms. Block's students are studying chemical reactions as well as the law of conservation of matter. A classic reaction occurs whe
    10·2 answers
  • The Moon is smaller than Earth. Why does the Moon have less gravity than Earth?
    11·1 answer
  • About how many times longer than modern humans have hooved mammals lived on earth?
    6·1 answer
  • What kind of crystalline solid is copper?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!