Chemistry, 20.08.2019 05:50 petertester7up
Which nuclides are used to date the remains of a once-living organism?
(1) c-14 and c-12 (3) i-131 and xe-131
(2) co-60 and co-59 (4) u-238 and pb-206
Answers: 1
Chemistry, 22.06.2019 06:00
There are 6.022, 104 atoms of hg in 1 mole of hg the number of atoms in 45 moles of hg can be found by multiplying 4.5 by 6.022, 102 which is the number of atoms in 4.5 moles of hg, correctly written in scientific notation with the correct number of significant figures? 0 21,109 0 21,100 271, 1024 27.099, 100 mark this and retum save and exit submit
Answers: 1
Chemistry, 22.06.2019 10:00
How many grams of co(g) are there in 74.5 ml of the gas at 0.933 atm and 30o c?
Answers: 1
Chemistry, 22.06.2019 10:30
Great amounts of electromagnetic energy from our sun and other bodies in space travel through space. which is a logical conclusion about these electromagnetic waves? their energy must be very their frequency must be very low these waves can travel without a medium they only travel through a vacuum of space
Answers: 2
Which nuclides are used to date the remains of a once-living organism?
(1) c-14 and c-12 (3)...
(1) c-14 and c-12 (3)...
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