Let’s Begin… The word “mole” suggests a small, furry burrowing animal to many. But in this lesson, we look at the concept of the mole in chemistry. Learn the incredible magnitude of the mole--and how something so big can help us calculate the tiniest particles in the world....
A 0.12-mole sample of nitrogen gas occupies a volume of 2.55 L. What is the volume of 0.32 mol of nitrogen gas under the same conditions? Calculate the volume occupied by 0.845 moles of nitrogen gas at a pressure of 1.37 atm and a temperature of 315 K. At STP, 1.0 mol...
The formation of oxygen containing compounds from the reaction of oxygen and another substance is characteristic of combustion reactions. For example, hydrocarbons form carbon dioxide and water. Carbon monoxide can be formed if the combustion reaction is incomplete....
Molarity is the most common way of expressing how much of a substance is dissolved in a given volume of solution. Although you can use a concentration calculator to find the molarity of a substance, it's well worth taking the time to learn to do the calc
This discovery adds another enticing layer to the story of chocolate, and it proves that this special bean has been revered for much longer than previously imagined. The journey from upper Amazon to Hershey's is a long and complex one, but it is encouraging to know that these ancient ...
How many moles of O2 is used when 4.5 moles of water is produced according to t How much mass does 1 mol of O2 gas have? To produce 12 moles of water, how many moles of oxygen gas are needed? The octane (C₈H₁₈) present in gasoline burns accor...
Question: How many nanograms does one mole of electrons weigh? How many nanograms does one mole of electrons weigh?Here’s the best way to solve it. Solution Share To determine the weight of one mole of electrons i...View the full answer Previous question Next question...
correlates to 6.02 x 10^23 units of a substance present. It doesn't matter what it is, one mole of it will be 6.02 x 10^23 units. A gram is a scientific measurement of an object's mass. Converting between the two shows us how much a molecule weighs, or how much of it is ...
A big step in knowing how to get rid of moles is understanding their diet. One old-wives tale that continues to live on is the suggestion of sticking a half-chewed piece of chewing gum into mole hills so the animal will eat it and choke. This is completely ineffective because moles onl...
The very first step is to stimulate as much muscle growth as you possibly can.If you start eating more food before you start lifting weights, then almost all of the weight you gain will be fat. If you’re naturally thin, then your body probably isn’t very interested in gaining fat, ...