Question 17(Multiple Choice Worth 2 points)
A scientist measures the rate of a reaction between two liquids. Then, he performs the reaction again, adding solid manganese. The reaction takes place more
quickly the second time. The mass of the manganese decreased by 0.45 grams during the reaction. He claims that the manganese acted as a catalyst because
sped up the reaction. Is the scientist correct? Why or why not?
Yes, because the reaction happened more quickly with the manganese.
Yes, because the manganese was a solid, and all solids are catalysts.
No, because manganese is a metal, and metals cannot be catalysts
No, because some manganese was used during the reaction, and catalysts are not used up.
Answers: 2
History, 21.06.2019 17:00
Which of the following groups of sentences most accurately describes the cuban missile crisis?
Answers: 1
History, 22.06.2019 01:00
What does the document of the birtish octopus is an uderlying cause of the world war 1
Answers: 1
History, 22.06.2019 01:30
Which of the following acts or treaties tried to american indians?
Answers: 2
Question 17(Multiple Choice Worth 2 points)
A scientist measures the rate of a reaction between two...
History, 02.01.2020 22:31
Computers and Technology, 02.01.2020 22:31
Biology, 02.01.2020 22:31
Mathematics, 02.01.2020 22:31
Biology, 02.01.2020 22:31
Biology, 02.01.2020 22:31
Social Studies, 02.01.2020 22:31
English, 02.01.2020 22:31