Chemistry, 04.03.2021 21:50 tyijiapostell
Procedure Part 1: Baking soda in water 1. Find the mass of the baking soda (in the weigh boat) before adding water. 23 grams 2. Add a little bit of water to the weigh boat, and let it sit for 5 minutes. 3. Find the mass of the baking soda (in the weigh boat) after adding the water. 46.5 grams 4. Throw the baking soda in the trash (NOT THE WEIGH BOAT). 5. Clean out the weigh boat with water at the sinks. a. Calculate the molar mass of baking soda, NaHCO3. (g/mol) b. Calculate the number of MOLES of baking soda after adding water. c. Calculate the number of MOLECULES of baking soda after adding water.
Answers: 3
Chemistry, 22.06.2019 07:30
11. phosphorus-32 is radioactive and has a half life of 14 days. how much of a 124 mg sample of phosphorus-32 is present after 56 days? a) 7.75 mg b) 15.5 mg c) 31.0 mg d) 62.0 mg
Answers: 3
Chemistry, 22.06.2019 17:20
The small bags of silica gel you often see in a new shoe box are placed there to control humidity. despite its name, silica gel is a solid. it is a chemically inert, highly porous, amorphous form of sio2. because water vapor readily adsorbs onto the surface of silica gel, it acts as a desiccant. despite not knowing mechanistic details of the adsorption of water onto silica gel, from the information provided you should be able to make an educated guess about the thermodynamic characteristics of the process. predict the signs for δg, δh, and δs for the adsorption of water.
Answers: 2
Chemistry, 23.06.2019 01:30
Polar bears give birth and hunt on sea ice. which of the following would polar bears survive during the melting of arctic ice? growing another layer of fur during summer migrate inland to search for different food sources staying put until the ice refreezes sticking to the usual diet of seals
Answers: 1
Procedure Part 1: Baking soda in water 1. Find the mass of the baking soda (in the weigh boat) befor...
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