05-09-2019
Chemistry

contestada

A chemical reaction gives off 2,100 kJ of heat energy.

About how many calories is it equal to?

(1 calorie=4.18 Joules)

5.0 × 10³ calories

5.0×10^4 calories

5.0×10^5 calories

5.0×10^6 calories

Respuesta :

desire04 desire04

05-09-2019

Explanation:

1KJ = 1000J

2100KJ = 2100×1000

=2,100,000J

1 Calorie =4.18J

x calorie =2100000J

x= 2100000/4.18

x= 502392.3445

x = 5.0× 10^5 calories

Answer Link

Otras preguntas

Write word problems that represent each way you can use a remainder in a division problem.include solutions.

PLEASE HELP! I will give the brainliest answer.

what type of narration can be found in What Maisie Knew by Henry James

How is genetic expression regulated?

What is the primary product of light-independent reactions? A) High-energy sugars B) High-energy carbohydrates C) High-energy salts D) High-energy proteins 13.

The half-life of a certain element is 100 days. How many half-lives will it be before only one-eighth of this element remains?

Branden has $5.The nest day for his birthday he go $30.How much money does he have now?

listing your ideas in order to generate a topic for your writing project is a.webbing b. freewriting c. brainstorming d. planning

Bede uses religious and even fantastical elements in his story about Caedmon. To modern-day readers these elements may seem out of place in a history. What woul

What progressive issue eventually led to the passage of the eighteenth amendment

Q&A Education