Which of the following is true for compounds?
a.
they all have the same properties regardless of their elemental composition.
b.
they can be created by chemical reactions.
c.
they can consist of no more than two types of elements.
d.
they can be separated into their component elements through physical means.
Answers: 2
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Which is the layer underground where all empty spaces are filled with a combination of air and water ?
Answers: 1
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List four observations that indicate that a chemical reaction may be taking place
Answers: 1
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8.98 dm3 of hydrogen gas is collected at 38.8 °c. find the volume the gas will occupy at -39.9 °c if the pressure remains constant.
Answers: 3
Chemistry, 22.06.2019 16:00
Click the button that shows the correct relationship of the electron affinities of the elements sodium and phosphorus. sodium’s electron affinity value is more negative than the electron affinity value of phosphorus. phosphorus’ electron affinity value is more negative than the electron affinity value of sodium. this information cannot be determined using the periodic table. answer is b on e2020.
Answers: 3
Which of the following is true for compounds?
a.
they all have the same properties reg...
a.
they all have the same properties reg...
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