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calwhite216
29.01.2020 •
Biology
Which of the following does not show the law of conservation of mass?
a. 24g of mg burn in 32g o2 to produce 56g of mgo
b. 24ml of mg burn in 32ml o2 to produce 56ml of mgo
c. 2 atoms of mg react with 1 molecule of o2 to produce 2 units of mgo
d. 1 atom of mg reacts with 1 atom of o to produce a unit of mgo that contains 2 atoms
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Ответ:
Ответ:
1. B
2. D
,3. A
4. B
5. A
6. B
7. D
8. B
9. B
10. A
11. D
12. B
13. D
14. C
15. B
Explanation:
Ответ:
We can measure the length of an object by using 'hand span', 'forearm length', or 'footstep' as the units of measuring length. But hand span, forearm length and footstep cannot be used as a standard unit's measurements because their length is not the same for all the persons.