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Lyrx [107]
4 years ago
7

Use the following terms to complete the concept map below: South America Pangaea North America Laurasia Gondwana

Chemistry
2 answers:
marusya05 [52]4 years ago
8 0
I got the same question too. The answers are:
South America: ePangaea: aNorth America:dLaurasia:cGondwana: b
If you still need them LOL 
mario62 [17]4 years ago
4 0
You need to add the map thing
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Natalie observes these characteristics in the model of an atom.
cestrela7 [59]
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Hope this helps!

5 0
3 years ago
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To separate a mixture of iron filings and salt, the<br> most efficient method would be
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4 years ago
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The atomic weight of an atom is the sum of the mass of the particles in the nucleus of the atom. These particles are called?
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Answer:

c) neutrons and protons

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5 0
2 years ago
For each of the salts on the left, match the salts on the right that can be compared directly, using Ksp values, to estimate sol
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4 0
3 years ago
Consider the following equation for the combustion of acetone (C3H6O), the main ingredient in nail polish remover.
solong [7]

Answer:

a) 4869 kj will be released

b) 43.86 g of octane

Explanation:

The heat of combustion is the amount of heat released when one mole of a substance reacts with enough oxygen

since the heat of combustion is per mol of combustible substancewjat we are required to do in this problem is calculate number moles in the reactions although in a different manner

a) MW C3H6O = 158 g/ mol

mol C3H6O = 158 g × 1 mol/ 58.08 g

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b) Here we are asked the mass of octane to produce 1950 kj of heat knowing that per mole of octane we get 5074.1 kj then

1 mol / 5074.1kj × 1950 kj= 0.384 mol

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4 0
3 years ago
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