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lina2011 [118]
3 years ago
8

Compare and contrast an element and a compound.PLZ HELP ITS DUE TOMORROW!!​

Chemistry
1 answer:
hjlf3 years ago
7 0

Answer:

Explanation:

The answer is that "elements are a single atom and compounds are a mixture of two elements or more." Elements are atoms that have protons, neutrons, and electrons. Compounds are mixtures with two or more elements.

Hope this helps.

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Why does a can of diet cola float in water but a can of regular cola does not
maria [59]

Answer:

because there more acid in diet cola

7 0
3 years ago
How many atoms does 2.0 moles of He represent
Rudiy27

We use the following formula to calculate the number of atoms:

n (mol) = N(number of atoms) / NA

N(He) = n(mol) · NA

N(He) = 2,0 moles · 6.02·1023 = 12.04·1023 atoms

6 0
3 years ago
Which is an example of a medicine that is made up of synthetic materials?
iren [92.7K]

Answer: Aspirin

Explanation:

6 0
2 years ago
If you had a glacier and an ice cube, how would the melting points of both differ?​
Dima020 [189]

Answer:

Due to how big the glacier is you would need more heat to melt it and since the ice cube is smaller a small amount of heat would melt it

Explanation:

8 0
3 years ago
A sample of gas exerts a pressure of 16 atm at a temperature of 340 K. What is the pressure of the gas in atm if the temperature
gavmur [86]

Answer:

P2 = 19.2atm

Explanation:

Initial pressure (P1) = 16atm

Initial temperature (T1) = 340K

Final temperature (T2) = 408K

Final pressure (P2) = ?

This question involves the use of pressure law

Pressure law states that the pressure of a fixed mass of gas is directly proportional to it's temperature provided that volume is kept constant.

Mathematically,

P = kT, k = P / T

Therefore,

P1 / T1 = P2 / T2 = P3 / T3 = ......=Pn / Tn

P1 / T1 = P2 / T2

We need to solve for P2

P2 = (P1 × T2) / T1

Now we can plug in the values and solve for P2

P2 = (16 × 408) / 340

P2 = 6528 / 340

P2 = 19.2atm

The final pressure (P2) of the gas is 19.2atm

5 0
3 years ago
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