Chemistry, 12.02.2021 21:20 backyardmastrs
There are two bright stars in the constellation One of the stars appears red and the other star appears blue which of the following is the best explanation for the difference in the stars color ?
A the blue star must be moving toward earth in red star away from earth
B The red star must be moving toward earth in the blue star away from earth
C The red star must have a greater surface temperature compared to the blue star
D that blue star must have a greater surface temperature compared to the red star
Answers: 2
Chemistry, 21.06.2019 12:30, kat2177
The electron configurations of two different atoms are shown below. each yellow electron has a charge of 1−, and the net charge of each nucleus is shown. these atoms will combine with bond. a. an ionic b. a positive c. a negative d. a covalent plzzz mee with !
Answers: 1
Chemistry, 23.06.2019 01:40, mandilynn22
Calcium carbonate decomposes at high temperatures to give calcium oxide and carbon dioxide as shown below. caco3(s) cao(s) + co2(g) the kp for this reaction is 1.16 at 800°c. a 5.00 l vessel containing 10.0 g of caco3(s) was evacuated to remove the air, sealed, and then heated to 800°c. ignoring the volume occupied by the solid, what will be the mass of the solid in the vessel once equilibrium is reached?
Answers: 1
There are two bright stars in the constellation One of the stars appears red and the other star appe...
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