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nevsk [136]
2 years ago
15

Katie blows up a balloon and ties it so there is a fixed amount of air in the balloon. She wraps a piece of string around the wi

dest part of the balloon, and measures it to find the size of the balloon. She has access to:
-A freezer
-A warm cupboard
-A cold refrigerator
-A normal temperature classroom

Write a plan to collect results to answer the question:

How does the temperature affect the size of a blown up balloon?
​
Chemistry
1 answer:
stepladder [879]2 years ago
5 0

Answer:

According to Charles law

Explanation:

volume is directly proportional to absolute temperature

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What is the mass of 0. 513 mol Al2O3? Give your answer to the correct number of significant figures. (Molar mass of Al2O3 = 102.
Margarita [4]

The mass of a 0.513 mol of Al2O3 is 52.33g.

HOW TO CALCULATE MASS:

The mass of a substance can be calculated by multiplying the molar mass of the substance by its number of moles. That is;

mass of Al2O3 = no. of moles of Al2O3 × molar mass of Al2O3

According to this question, there are 0.513 moles of Al2O3.

Mass of Al2O3 = 0.513 × 102

Mass of Al2O3 = 52.33g

Therefore, the mass of a 0.513 mol of Al2O3 is 52.33g.

Learn more about mass calculations at: brainly.com/question/8101390?referrer=searchResults

7 0
2 years ago
P4O10 -> 4P+5O2 How many moles of phosphorus would be produced if 5.3 mol of P4O10 reacted?
viktelen [127]

Answer:

21.2 moles.

Explanation:

Hello!

In this case, for the given chemical reaction, we can see there is a 1:4 mole ratio between tetraphosphorous decaoxide and phosphorous; therefore, the following proportional factor provides the requested moles of phodphorous:

n_P=5.3molP_4O_{10} *\frac{4molP}{1molP_4O_{10}} \\\\n_P=21.2molP

Best regards!

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Just no

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