Chemistry, 13.07.2019 07:40, alazhamason
Astudent explained to the class that helium has 8 valence electrons because it is in group 18. is the student correct? - the student is incorrect because helium has 2 valence electrons and it's in group 18 because the first energy level is full. - the student is correct because all elements in group 8 have a full outer energy shell. -the student is correct because all elements in group 18 have 8 valence electrons. -the student is incorrect because all noble gases have 2 valence electrons.
Answers: 1
Chemistry, 21.06.2019 19:50, limelight11
Which statement describes how phase changes can be diagrammed as a substance is heated? the phase is on the y-axis and the temperature is on the x-axis. the temperature is on the y-axis and the phase is on the x-axis. the time is on the y-axis and the temperature is on the x-axis. the temperature is on the y-axis and the time is on the x-axis.
Answers: 1
Chemistry, 22.06.2019 09:50, revlonknox6
Achemist has dissolved a certain substance in water. the chemist knows that more of the substance could be dissolved into the water before it stops dissolving. therefore
Answers: 2
Chemistry, 22.06.2019 12:20, tenleywood
The yearly amounts of carbon emissions from cars in belgium are normally distributed with a mean of 13.9 gigagrams per year and a standard deviation of 5.8 gigagrams per year. find the probability that the amount of carbon emissions from cars in belgium for a randomly selected year are between 11.5 gigagrams and 14.0 gigagrams per year. a. 0.340 b. 0.660 c. 0.167 d. 0.397
Answers: 2
Chemistry, 22.06.2019 12:30, kingbot350
How many grams of magnesium metal will react completely with 8.3 liters of 5.5m hcl? show all work
Answers: 1
Astudent explained to the class that helium has 8 valence electrons because it is in group 18. is th...
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