Chemistry, 10.06.2021 21:40, mkingston1705
-Um estudante fez a seguinte afirmação: "Enquanto o gelo derretia, sua temperatura subiu de 0 °C a 5 °C". Você acha que a afirmação do estudante está correta? Justifique sua resposta.
Answers: 1
Chemistry, 21.06.2019 22:30, Cnolteb5663
Often on a topographic map, every fifth contour line is darkened. what is this line called? a. key b. slope c. benchmark d. index contour
Answers: 1
Chemistry, 22.06.2019 04:00, lucasrandall
Asolution contains 225 g of sodium chloride, nacl, dissolved in enough water to make a 0.25 l of solution. what is the molarity of the solution?
Answers: 2
Chemistry, 22.06.2019 08:00, wizz4865
Why is the bond angle in a water molecule less than the bond angle of methane? a. the central oxygen atom in water has two lone pairs of electrons, whereas the central carbon atom in methane has no lone pairs. b. the central hydrogen atom in water has one lone pair of electrons, whereas the central carbon atom in methane has two lone pairs. c. the central oxygen atom in water has four lone pairs of electrons, whereas the central carbon atom in methane has only one lone pair. d. the central oxygen atom exerts more repulsive force on surrounding atoms than the central carbon atom in methane does. reset next
Answers: 2
Chemistry, 22.06.2019 17:00, emma3216
In a heat engine of 1000 j of heat enters the system and the piston does 500 j of work what is the final internal energy of the system if the inital energy was 2000 j we have to do all of these down here 1)write the equation 2)list out your know variables 3)plug the numbers into the equations 4)solve 5)write your solution statemtn that includes inital energuy and final energuy added
Answers: 1
-Um estudante fez a seguinte afirmação: "Enquanto o gelo derretia, sua temperatura subiu de 0 °C a 5...
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