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Anettt [7]
3 years ago
5

A compound is a pure substance composed of two or more elements, combined by chemical means, in a definite ratio. Which containe

r resents a chemical compound?
A) Cl
B) H2O
C) N2
D) Na

Chemistry
1 answer:
strojnjashka [21]3 years ago
8 0

Answer:

H20

Explanation:

H20 (WATER) is a compound because its constituent atoms, oxygen and hydrogen are present in a definite ratio (1:2)

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3 years ago
55 L of a gas at 25oC has its temperature increased to 35oC. What is its new volume?
ladessa [460]

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Approximately 56.8 liters.

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Assume that the gas here acts like an ideal gas. Assume that this process is isobaric (in other words, pressure on the gas stays the same.) By Charles's Law, the volume of an ideal gas is proportional to its absolute temperature when its pressure is constant. In other words

\displaystyle V_2 = V_1\cdot \frac{T_2}{T_1},

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  • T_1 is the initial temperature in degrees Kelvins.

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