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An airplane takes off from Boston for the 980 km trip to Detroit. The plane lands two hours later. Which of the following best describes the average speed and direction of the airplane's flight? A. 325
asked
May 1, 2020
Physics
middle-school
1
answer
5
votes
50.2k
views
HELP! CHEMISTRY QUESTIONS! 3. When two atoms of 2H (deuterium) are fused to form one atom of 4He (helium), the total energy evolved is 3.83 ?? 10-12 joules. What is the total change in mass (in kilograms)
asked
Sep 5, 2019
Chemistry
high-school
2
answers
1
vote
113k
views
Which element has an electron configuration of [Kr]5s2?
asked
Feb 18, 2019
Chemistry
middle-school
2
answers
4
votes
152k
views
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