Chemistry, 20.10.2020 18:01 Terezagonzalez2271
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[OU.03H]Two stars on the main sequence have different initial masses. Which of these graphs would best model and predict the lifetime of the two stars as compared to the lifetime of the sun?
A.) A graph comparing Stellar Mass (axis) and Main Sequence Lifetime (y-axis). The line graph shows a steep decrease in stellar mass from left to right.
B.) A graph comparing Stellar Mass (x-axis) and Main Sequence Lifetime (y-axis). The line graph shows a steep increase in stellar mass from left to right.
C.) A graph comparing Stellar Mass (axis) and Main Sequence Lifetime (y-axis). The curve shows a steep increase, then a decrease in stellar mass from left to right, peaking at the half-way mark.
D.) A graph comparing Stellar Mass (axis) and Main Sequence Lifetime (y-axis). The curve shows a steep decrease, then a increase in stellar mass from left to right, showing the lowest point at the half-way mark.
Answers: 1
Chemistry, 22.06.2019 00:00, lilyclairehutson
Which of the following statements is true? a. elements in the last period are radioactive. b. atomic weight is the same as atomic mass. c. elements in the same group have the same number of electron shells. d. atomic number equals the number of neutrons in the nucleus of an atom.
Answers: 1
Chemistry, 22.06.2019 12:10, yootmytoot
Achemistry student needs to standardize a fresh solution of sodium hydroxide. he carefully weighs out of oxalic acid , a diprotic acid that can be purchased inexpensively in high purity, and dissolves it in of distilled water. the student then titrates the oxalic acid solution with his sodium hydroxide solution. when the titration reaches the equivalence point, the student finds he has used of sodium hydroxide solution. calculate the molarity of the student's sodium hydroxide solution. be sure your answer has the correct number of significant digits.
Answers: 1
PLEASE HELP NOOWWW I WILL GIVE BRAINLIEST
[OU.03H]Two stars on the main sequence have different ini...
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