Chemistry, 07.07.2019 21:00 joynerjaila
All substances are composed of which type of matter? a. ions b. mixtures c. elements d. molecules
Answers: 1
Chemistry, 22.06.2019 09:00
An excess of lithium oxide undergoes a synthesis reaction with water to produce lithium hydroxide li2o+h2o→2lioh if 1.05 g of water reacted, what is the theoretical yield of lithium hydroxide? a) 5.83 x 10–2 g lioh b) 1.17 x 10–1 g lioh c) 2.79 x 100 g lioh d) 1.40 x 100 g lioh
Answers: 1
Chemistry, 22.06.2019 17:10
)benzene and toluene form nearly ideal solutions. consider an equimolar solution of benzene and toluene. at 20 °c the vapour pressures of pure benzene and toluene are 9.9 kpa and 2.9 kpa, respectively. the solution is boiled by reducing the external pressure below the vapour pressure. calculate (i) the pressure when boiling begins, (ii) the composition of each component in the vapour, and (iii) the vapour pressure when only a few drops of liquid remain. assume that the rate of vaporization is low enough for the temperature to remain constant at 20 °c.
Answers: 1
Chemistry, 22.06.2019 18:50
Which of the following is a conclusion that resulted from ernest rutherford’s 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 23:10
Match the formula for the following compound: magnesium sulfate heptahydratemgs·7h2omg2so4·7h2omg(so4)2·7h2omgso4·7h2o
Answers: 1
All substances are composed of which type of matter? a. ions b. mixtures c. elements d. molecule...
History, 07.04.2021 14:00
Chemistry, 07.04.2021 14:00
Chemistry, 07.04.2021 14:00
Social Studies, 07.04.2021 14:00
Mathematics, 07.04.2021 14:00
Mathematics, 07.04.2021 14:00
Mathematics, 07.04.2021 14:00
Mathematics, 07.04.2021 14:00
Chemistry, 07.04.2021 14:00
Chemistry, 07.04.2021 14:00
English, 07.04.2021 14:00
Social Studies, 07.04.2021 14:00