Chemistry, 25.12.2019 16:31 hhomeschool24
Sam's father bought sam a goldfish and a fish bowl. what must sam put in the fish bowl so that the goldfish will survive?
a. water
b. plants
c. sand
d. air
Answers: 3
Chemistry, 22.06.2019 10:00
How many mmols of tris-hcl are there in 100 ml of a 100 mm tris-hcl buffer solution at ph 8.1? note that the 100 mm refers to the sum of tris and tris-hcl concentrations?
Answers: 3
Chemistry, 22.06.2019 20:30
The activation energy for the reaction no2(g)+co2(g)⟶no(g)+co(g) is ea = 300 kj/mol and the change in enthalpy for the reaction is δh = -100 kj/mol . what is the activation energy for the reverse reaction?
Answers: 3
Chemistry, 23.06.2019 06:30
Which of the following is true about the products formed during photosynthesis? (5 points) select one: a. they have the same mass as the mass of reactants. b. they are the same set of compounds as the reactants. c. they have more mass than the mass of reactants. d. they are chemically the same as the reactants.
Answers: 1
Chemistry, 23.06.2019 07:00
Ajar contains a certain substance. which observation would show that the substance must be either a solid or a liquid?
Answers: 1
Sam's father bought sam a goldfish and a fish bowl. what must sam put in the fish bowl so that the g...
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