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iren [92.7K]
2 years ago
7

PLEASEEEEEEEEEEEEEEEEE HELPPPPPPPPPPPPPPPPPPPPPPPP

Chemistry
1 answer:
Sophie [7]2 years ago
7 0

give a very origin example a student that include B sin displayed

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As the amount of salt in water increases, the___________ of the water increases.
Gnom [1K]

Answer:

3

Explanation:

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3 years ago
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What diffuses more quickly: tetracarbon decahydride (C4H10) or iodine (12)? By how much?
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Answer: Butane will effuse more quickly because it has a smaller molar mass

Explanation:

Molar mass of C4H10 = 58.123 g/mole

Molar mass of I2 = 253.808 g/mole

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What trend is seen in atom size, going down the periodic table?
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Answer:
It is called Ionization Energy.
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3 years ago
Consider an ideal gas at 30 ∘C and 1.02 atm pressure. To get some idea how close these molecules are to each other, on the avera
Nastasia [14]

Answer: They are close to each other by 41.03 m^3

Explanation:

From Ideal gas equation, PV = nRT

Where n is negligible

R is gas constant = 8.314 J/mol.k

T = 30 + 273 = 303K

P = 1.02 * 103351.5 = 103351.5 Pascal

Then;

PV = RT

V = P/RT

V = 103351.5/(8.314*303)

V = 41.03m^3

8 0
3 years ago
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From 1962 until 1981 pennies were made from 95% copper and 5% zinc and had a mass of 3.1 g. Starting in 1982, pennies have been
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Answer:

2.7724 g

Explanation:

Mass of pre- 1892 pennies = 3.1 g

Abundance = 45.4 %

Mass of post 1892 pennies = 2.5 g

Abundance = 100 - 45.4 = 54.6 %

The average mass is given as = ( 3.1 g   *  45.4 / 100)  +  (2.5g  *  54.6 / 100)

Average Mass = 3.1 * 0.454   +   2.5  *  0.546

Average Mass = 1.4074  + 1.365 = 2.7724 g

8 0
3 years ago
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