Chemistry, 31.03.2020 04:25 denzel6887
In the following experiment, a coffee-cup calorimeter containing 100 mL of H2O is used. The initial temperature of the calorimeter is 23.0 ∘C. If 4.00 g of CaCl2 is added to the calorimeter, what will be the final temperature of the solution in the calorimeter? The heat of solution ΔHsoln of CaCl2 is −82.8 kJ/mol. Assume that the specific heat of the solution formed in the calorimeter is the same as that for pure water: Cs=4.184 J/g⋅∘C.
Answers: 3
Chemistry, 21.06.2019 23:00
What is the molecular formula for a compound that is 46.16% carbon, 5.16% hydrogen, and 48.68% fluorine? the molar mass of the compound is 156.12 g/mol
Answers: 2
Chemistry, 22.06.2019 07:40
The formation of a solid, also known as a is an indication of a chemical change. precipitate particulate particle powder
Answers: 3
Chemistry, 22.06.2019 14:30
Aroom with dimensions 7.00m×8.00m×2.50m is to be filled with pure oxygen at 22.0∘c and 1.00 atm. the molar mass of oxygen is 32.0 g/mol. how many moles noxygen of oxygen are required to fill the room? what is the mass moxygen of this oxygen?
Answers: 1
Chemistry, 22.06.2019 17:10
Calculate the estimated density of each ball. use the formula d = m/v where d is the density, m is the mass, and v is the volume. record your calculations in table a of your student guide. given that the density of water is 1.0 g/cm3, make a prediction about whether each ball will float in water. record your prediction in table a. what is the estimated density of the table tennis ball? record your answer to the nearest hundredth
Answers: 2
In the following experiment, a coffee-cup calorimeter containing 100 mL of H2O is used. The initial...
English, 03.09.2021 18:00
History, 03.09.2021 18:00
Mathematics, 03.09.2021 18:00
Mathematics, 03.09.2021 18:00
History, 03.09.2021 18:00
Mathematics, 03.09.2021 18:00
Social Studies, 03.09.2021 18:00
Mathematics, 03.09.2021 18:00
Biology, 03.09.2021 18:00