A balloon contains 20.0 L of helium in the morning when the temperature is 23.0°C. By afternoon, the temperature has increases to 45.0°C. What is the new
volume of the balloon? *
O 21.49 L
39.13 L
0 0.02 L

Explanation:

We want to find the new volume given the temperature, so we use Charles's Law. This states the volume of a gas is directly proportional to the temperature. The formula is:

We know the original volume is 20.0 liters and the temperature is 23.0 degrees Celsius. The temperature changes to 45.0 degrees Celsius, but we don't know the new volume. Substitute the known values into the formula.

We are solving the new volume, so we need to isolate the variable V₂. It is being divided by 45.0 degrees Celsius. The inverse of division is multiplication, so we multiply both sides by 45.0 °C.

The units of degrees Celsius cancel.

If we round to the nearest hundredth, the 0 in the thousandth place tells us to leave the 3.

The new volume of the balloon is approximately 39.13 Liters.

pure water does not conduct electricity very well. however, when certain substances are dissolved in water, the solution does conduct electricity. you can make a simple device that shows how well a solution conducts electricity. this device uses a flashlight bulb to indicate how well the solution conducts electricity. the better the solution conducts electricity, the brighter the bulb will glow.

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