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It is not practical to count individual atoms/molecules because of their small size. However, we can determine the number of atoms/molecules in a sample if we know the mass of a single atom/molecule and use the method of "counting by weighing"
1. your expense account allows you to spend $80.00 a day when you are on a trip. If you have a week-long trip to tiny country of Kratvia, where the exchange rate is 3.50 kratvels per dollar, how many kratvels can you spend during the week? (7 ..
The pressure of hydrogen fluoride in Agent P's lab is lower than expected and rises more quickly as the temperature is increased than the ideal gas law predicts. Suggest an explanation. Are we dealing with a real or ideal gas
If 4.50 g of methane gas (CH4) is in a 2.00-L container at 35°C, what is the pressure in the container?
What systematic factors in the experience itself may lead to an answer that is not exactely correct.( Do not include student errors such as 'I forgot to set the balance to 0",etc.We assume the student is a perfect experimenter and errors result on..
What mass of carbon dioxide (in kg) is produced upon the complete combustion of a typical tank of propane containi 18.9 L. The density of the propane is 0.621 g/ mL Hint: begin by writing a balanced rquation for the combustion reaction.
A 9.767-g gaseous mixture contains ethane (C2H6) and propane (C3H8). Complete combustion to form carbon dioxide and water requires 1.120 mol of oxygen.
when 25.0 ml of 0.500m h2so4 is added to 25.0ml of 1.00m koh in a coffee cup calorimeter at 23.5 degrees cel the
what volume of carbone dioxide ,measured at STP,would result from the reaction of 9.786 kg of oxygen with excess pentane
A 100 mL of a 0.100 M solution of vinegar (acetic acid, CH3COOH) is mixed with 100 mL of a 0.100 M baking soda (sodium bicarbonate) solution and a reaction proceeds that generates carbon dioxide, water and sodium acetate.
How do the strengths of London forces compare in CO2 and CS2? Which of these is expected to have a higher boiling point?
Based on the "like dissolves like" rule, predict whether each of the following solutes is soluble or insoluble in water
What is the principal product when aniline is treated with sodium nitrite and hydrochloric acid at 0-5°C and this mixture is added to p-ethylphenol.
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