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Chemistry, 18.03.2021 03:30 zackarygonzalez1028
Three treatments of different starting materials are listed.
Substance Characteristics
1
The substance was heated and then placed in an ice bath.
2
The substance was in a salt solution of 2M and later placed in a
solution of 4M to cause a reaction.
3
The substance was hammered and broken into pieces.
Which statement explains the treatments?
O Substance 1 was activated by a decrease in temperature, Substance 2 was activated by the change in
concentration, and Substance 3 decreased the surface area.
O Substance 1 was activated by a decrease in temperature, Substance 2 was activated by the change in pressure,
and Substance 3 increased the surface area.
O Substance 1 was activated by the heat and inactivated by ice, Substance 2 was activated by the change in pressure,
and Substance 3 decreased the surface area.
Substance 1 was activated by the heat and inactivated by ice, Substance 2 was activated by the change in
concentration, and Substance 3 increased the surface area.
Answers: 3
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Find the mass in grams of hydrogen gas produced when 14.0 moles of hcl is added to an excess amount of magnesium.
Answers: 3
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21. consider the following chemical reaction: n2+ o2 2 no if 10.0 g of n2 reacts with excess oxygen then how many grams of no can be formed? a) 10.7 g b) 21.4 g c) 32.9 g d) 42.8 g page 4 of 8
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Chemistry, 22.06.2019 16:50
Which of the following is an indication that a substance has undergone a chemical change? a. no new product has been formed. b. the color of the substance has not changed. c. the original constitute has not changed. d. the molecular structure has changed.
Answers: 1
Chemistry, 22.06.2019 18:00
Which statement best describes the he properties of iconic compounds ?
Answers: 1
Three treatments of different starting materials are listed.
Substance Characteristics
1
1
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