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sweet-ann [11.9K]
3 years ago
12

Suppose that 0.250 mol of methane, CH4(g), is reacted with 0.400 mol of fluorine, F2(g), forming CF4(g) and HF(g) as sole produc

ts. Assuming that the reaction occurs at constant pressure, how much heat is released?
Chemistry
1 answer:
shtirl [24]3 years ago
7 0

300 gallons

Explanation:

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Andi performs the calculation that is shown below.
rodikova [14]

Answer: 3.59

Explanation:

(2.06)(1.743)(1.00)

2.06 × 1.743 × 1.00

= 3.59058

Two of the multiplied digits are represented in 3 significant figures. Therefore, for correct representation, the result of the product should be written to three significant figures.

3.59058 to 3 significant figures:

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Therefore, (2.06)(1.743)(1.00) to 3 significant figures equals :

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3 years ago
A resting adult requires about 240 ml of pure oxygen/mind and breathes about 12 times every minute. if inhaled air contains 20 p
Dmitry_Shevchenko [17]

12 times breathe give 240 ml of pure O_{2}. Each breathe gives 20 ml of O_{2}.

Let us consider, volume of air per breathe= x ml.

Pure O_{2} from inhaled air= \frac{20}{100}x ml and Pure O_{2} from exhaled air= \frac{16}{100}x ml.

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So, \frac{20}{100}x + \frac{16}{100}x = 20

Therefore, x = 55.5 ml

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What is the net ionic charge of a calcium ion?
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Ca generally loses two electrons from its outer shell to form a Ca2+ ion.

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