Samuel adds a teaspoon of salt to a glass of water. he notices that the salt disappears. samuel takes a sip to discover that the water tastes salty. what kind of change has occurred?
a.
it’s a chemical reaction because a new substance has formed.
b.
it’s a physical change because the water and the salt kept their original properties.
c.
it’s an example of synthesis because two substances reacted to give one substance.
d.
it’s a chemical reaction because the water now tastes salty but originally did not.
Answers: 2
Chemistry, 21.06.2019 18:30
Calculate the change in entropy if br2(l) is converted into gaseous br atoms. s° for br2(l) = 152.2 j/(mol•k) s° for br2(g) = 245.5 j/(mol•k) s° for br(g) = 175.0 j/(mol•k)
Answers: 2
Chemistry, 22.06.2019 19:20
Anyone who's in connections academy chemistry b have the factors that affect the rate of a reaction portfolio already done?
Answers: 3
Chemistry, 23.06.2019 01:30
Some molecular compounds, such as hcl, ionize completely in solution. for molecular compounds such as h2co3, most molecules do not ionize in solution. which describes the properties of these two solutes? a. hcl and h2co3 have the same effect on the properties of the solution. b. hcl raises the freezing point of water more than h2co3 does. c. hcl raises the boiling point of water more than h2co3 does.
Answers: 2
Samuel adds a teaspoon of salt to a glass of water. he notices that the salt disappears. samuel take...
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