Chemistry, 05.03.2020 13:01 fansofboys
The most abundant elements in the universe are hydrogen and helium, but there are also small but significant amounts of heavier elements in stars and planets and in our own bodies. Where did these heavy elements originate?
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Chemistry, 21.06.2019 19:00
Y=ā1x + 7 if y has a value of ā24 what is the value of x?
Answers: 1
Chemistry, 22.06.2019 06:00
How much would the freezing point of water decrease if 4 mol of sugar were added to 1 kg of water(k=1.86 c/mol/kg for water and i=1 for sugar
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Chemistry, 22.06.2019 18:50
Which of the following is a conclusion that resulted from ernest rutherfordās scattering experiment? (will mark brainliest) a. the nucleus is negatively charged b. the atom is a dense solid and is indivisible c. the mass is conserved when atoms react chemically d. the nucleus is very small and the atom is mostly empty space
Answers: 3
Chemistry, 22.06.2019 20:30
The activation energy for the reaction no2(g)+co2(g)ā¶no(g)+co(g) is ea = 300 kj/mol and the change in enthalpy for the reaction is Ī“h = -100 kj/mol . what is the activation energy for the reverse reaction?
Answers: 3
The most abundant elements in the universe are hydrogen and helium, but there are also small but sig...
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