During which stage of a scientific investigation is data collected?
a. evaluate the con...
Chemistry, 03.10.2019 05:00 zacklofton6518
During which stage of a scientific investigation is data collected?
a. evaluate the conclusions
b. conduct an investigation
c. analyze the results
d. design an investigation
the answer is b. conduct an investigation
Answers: 2
Chemistry, 21.06.2019 17:00
Two friends at different locations want to communicate with each other by sending low energy signals. which of the following methods can they use to communicate? a) produce x-rays using colliding electrons and send them to radios, which capture sound b) send messages using infrared radiation, which travel in the form of waves c) send radio waves through intervening media like radio and television d) produce sound waves using microwaves from heated objects
Answers: 2
Chemistry, 21.06.2019 17:10
There are 6.022 x 10^23 atoms of hg in 1 mole of hg. the number of atoms in 4.5 moles of hg can be found by multiplying 4.5 by 6.022 x 10^23 a. 2.7 x 10^24 b. 27 x 10^23 c. 2.71 x10^24 d. 27.099 x 10^23
Answers: 3
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Asample of aluminum foil contains 8.60 × 1023 atoms. what is the mass of the foil?
Answers: 1
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Which other elements contain the same number of outer electrons as sodium
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