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Mariulka [41]
3 years ago
14

In the world of chemistry, a 'mole' is a number of something... a very large number of something.

Chemistry
1 answer:
valkas [14]3 years ago
3 0
Mole is equal to 6.02*10^23 atoms, and you have 7.00*10^23 atoms
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Land breezes near bodies of water occur because
Aleksandr [31]

B) land cools off much faster than water (creating a air region of high density  above land and lower density above sea)

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3 years ago
An automobile tire was inflated to a pressure of 24 lb in-2 (1.00 atm = 14.7 lb in-2 ) on a winter’s day when the temperature wa
const2013 [10]

Explanation:

Initial Pressure = 24 lb in-2

Initial Temperature = –5 o C = 268 K (Converting to kelvin temperature)

Final Pressure = ?

Final Temperature =  35 o C = 308 K (Converting to kelvin temperature)

No Change in Volume.

From Gay Lusaac's law; pressure of a given amount of gas held at constant volume is directly proportional to the Kelvin temperature.

P1T1 = P2T2

P2 = P1T1 / T2

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There would be a drop in pressure as the temperature increases. Appropriate measures should b taken by regularly gauging the pressure of the tire.

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3 years ago
The process of gas converting to a liquid is called evaporation.<br><br> TRUE<br><br> FALSE
motikmotik
False. Because gas to a liquid is called condensation
6 0
3 years ago
How much heat energy is required to raise the temperature of 0.358 kg of copper from 23.0 ∘C to 60.0 ∘C? The specific heat of co
NNADVOKAT [17]
In order to calculate how much heat is needed to raise the temperature you need to use the formula q =mass x specific heat x (final temperature- initial temperature) where q represents heat being absorbed or released. Before you begin you would convert kg to g because the specific heat is measure in g. So you would set up the equation as q = 358 g x .092 x (60-23 degrees Celsius) which would give you 1218.6
7 0
3 years ago
Read 2 more answers
Convert 78.9 kJ into calories Can you also explain how pls? ty
Naddik [55]

Explanation:

1 kJ = 238.85 cal and

1 cal = 0.004187 kJ

so it will be 78.9×238.85 = <em><u>1</u></em><em><u>8</u></em><em><u>,</u></em><em><u>8</u></em><em><u>4</u></em><em><u>4</u></em><em> </em>calories

78.9 Kilojoules (kJ) = 18,844 Calories (IT) (cal)

3 0
3 years ago
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