3 years ago

WILL GIVE BRAINIEST IF HELP Which of these is a compound

Chemistry

1 answer:

NikAS [45]3 years ago

5 0

b the awnser is b its a compound of carbon C and 2 oxygon atoms O sub 2

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Between magnesium and calcium, which has the highest ionization energy, and why?

quester [9]

Answer:

magnesium

Explanation:

magnesium has fewer valence shells meaning that the protons have a stronger hold on the electrons and it would take more energy to remove an electron to create an ion.

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2 years ago

An element has atomic number 10 and an atomic mass of 20. How many neutrons are in the atom of this element?

Igoryamba

The answer is A. 10.

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3 years ago

What is the pressure in a 5.00 L tank with 49.00 grams of oxygen gas at 350 K? ___atm

ziro4ka [17]

Answer:

The right answer is "8.81 atm".

Explanation:

Given:

V = 5.00 L

Mass = 4900 g

MW = 32 g/mol

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Now,

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$n = \frac{Mass}{MW}$

$=\frac{49.00}{32}$

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or,

⇒ $P=\frac{nRT}{V}$

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$=\frac{1.53125\times 0.0821\times 350}{5.00}$

$=\frac{44.1}{5.00}$

$=8.81 \ atm$

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2 years ago

At sea level, a kilogram weighs approximately:

Marysya12 [62]

The answer would be b, or 2

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3 years ago

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What happens to the temperature of the remaining liquid when some of the liquid evaporates

Dovator [93]

Turns into vapor. not all of the molecules are liquid have the same energy

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