Chemistry, 26.04.2021 08:50 michaelwilliams1356
What is the volume occupied by 0.255 mol of helium gas at 1.31 atm and 301 K?
Answers: 1
Chemistry, 22.06.2019 05:30, madisonrosamond99
Astudent carefully transfers 30 g of water and 30 g of alcohol in a glass tube, forming two layers and filling the tube completely. after sealing the tube, the student mixes the solutions, and notices a bubble that forms in the tube. what is the mass of the contents in the glass tube after mixing?
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Chemistry, 22.06.2019 16:50, Pookiev
Which of the following is an indication that a substance has undergone a chemical change? a. no new product has been formed. b. the color of the substance has not changed. c. the original constitute has not changed. d. the molecular structure has changed.
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Chemistry, 23.06.2019 04:31, diamondscott9297
Which of the following is an example of how telecommunication devices people do their jobs? a.) a security guard checks the time using a digital watch. b.) a banker does some quick math using a solar calculator. c.) a nurse uses a digital thermometer to take a patient’s temperature. d.) a construction worker reports in to his office using a cell phone.
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What is the volume occupied by 0.255 mol of helium gas at 1.31 atm and 301 K?...
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