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Dimensional Analysis

Q. If you wanted to make an accurate scale model of the hydrogen atom and decided that the nucleus would have a diameter of 1mm, what would be the diameter of the entire model?

Solved • Jan 26, 2020

Dimensional Analysis

Q. What is the molar volume of Ar gas under the conditions of temperature and pressure where its density is 1.19 g/L?

Solved • Jan 23, 2020

Dimensional Analysis

Q. The vapor pressure of a substance describes how readily molecules at the surface of the substance enter the gaseous phase. At the boiling point of a liquid, the liquid's vapor pressure is equal to or greater than the atmospheric pressure exerted on the surface of the liquid. Since the atmospheric pressure at higher elevations is lower than at sea level, the boiling point of water decreases as the elevation increases. The atmospheric pressure at sea level is 760 mm Hh. This pressure decreases by 19.8 mm Hg for every 1000-ft increase in elevation. The boiling point of water decreases 0.05 °C for every 1 mmHg drop in atmospheric pressure. What is the boiling point of water at an elevation of 1.40x10^4 ft? Express your answer with the appropriate units using three significant figures.

Solved • Jan 22, 2020

Dimensional Analysis

Q. When one thing is ten times larger as another, it is said to be "an order of magnitude" larger. A hundred times larger is two orders of magnitude. A thousand is three orders of magnitude. By how many orders of magnitude is the Empire State Building taller than a chair seat? Enter an integer.

Solved • Jan 21, 2020

Dimensional Analysis

Q. The volume of a single niobium atom is 9.46x10^-24 cm^3. What is the volume of a niobium atom in microliters?

Solved • Jan 20, 2020

Dimensional Analysis

Q. Carry out each of the following conversions. (f) 6359 L to cm^3

Solved • Jan 20, 2020

Dimensional Analysis

Q. How many hours are there in exactly 28 days? This answer has ____ significant figures.

Solved • Jan 20, 2020