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Sergio039 [100]
3 years ago
9

Please help

Chemistry
1 answer:
Rainbow [258]3 years ago
7 0

Hi there!

\large\boxed{\text{Carbon.}}

Coal and charcoal are almost entirely made up of carbon. Charcoal is made from wood that is burned to form pure carbon, whereas coal is a fossil fuel formed by decayed organic matter from millions of years ago.

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3 years ago
Combustibilty defined?
Phantasy [73]
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8 0
3 years ago
The heating element of a hair dryer dissipates 1500 w when connected to a 180 v outlet. part a what is its resistance?
Sophie [7]

The resistance of the heating element is 21.61 Ω

Given

The power dissipated = 1500 W

Voltage = 180 V

We know that

Power = Voltage * Current

⇒ Power / Voltage = Current

⇒ 1500 W/180 V = Current

⇒ 8.33 A = Current

In order to calculate the resistance of the heating element. We Have to apply the formula

Power = (Current)^2 * Resistance

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⇒ Resistance = 1500 W/ (8.33) ^2

⇒ Resistance = 21.61 Ω

Hence the resistance of the heating element is 21.61 Ω

Learn more about resistance here: -

“ brainly.com/question/17330679  “

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5 0
2 years ago
Which of the following statements are true of acids and bases?
gtnhenbr [62]
A. Acids increase the number of OH- ions in a solution. FALSE
B. Bases increase the number of OH- ions in a solution. TRUE
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8 0
3 years ago
08.04 MC) An unknown solution has a pH of 7.2. Which of these chemicals is likely to cause the greatest decrease in the pH of th
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Answer:

HNO3

Explanation:

i have the test

6 0
3 years ago
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