Chemistry, 11.07.2019 04:30 hntnhtthnyt
All magnetic minerals will have the element iron in the chemical composition true or false
Answers: 1
Chemistry, 21.06.2019 18:30
Calculate the change in entropy if br2(l) is converted into gaseous br atoms. sĀ° for br2(l) = 152.2 j/(molā¢k) sĀ° for br2(g) = 245.5 j/(molā¢k) sĀ° for br(g) = 175.0 j/(molā¢k)
Answers: 2
Chemistry, 22.06.2019 02:10
When 225mg of anthracene, c14h10(s), was burned in a bomb calorimeter the temperature rose by 1.75k. calculate the calorimeter constant. by how much will the temperature rise when 125mg of phenol, c6h5oh(s), is burned in the calorimeter under the same conditions? (Ī“ch< (c14h10,s)=ā7061 kj molā1.)
Answers: 3
Chemistry, 22.06.2019 08:00
Which of the following observations indicates that there is a small, dense, positively charged part in the center of an atom? some uncharged particles are scattered by a gold foil. all uncharged particles are attracted towards a gold foil. all positively charged particles pass straight through a gold foil. some positively charged particles bounce back from a gold foil.
Answers: 2
Chemistry, 22.06.2019 09:30
In 2002, the rare earth elements mine in mountain pass, california was closed because
Answers: 1
All magnetic minerals will have the element iron in the chemical composition true or false...
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