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nexus9112 [7]
3 years ago
6

Tarnished silver can be cleaned with toothpaste. Give reason

Chemistry
1 answer:
vfiekz [6]3 years ago
6 0
Toothpaste is an abrasive that contains many things, but mainly phosphates.
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How many moles of magnesium are in 3. 01 x 10^22 atoms of magnesium.
marshall27 [118]

Answer:

Explanation:

1 mol of anything is 6.02 * 10^23 atoms (in this case)

x mol of 3.01 * 10^22

Set up the proportion

1/x = 6.02*10^23 / 3.01 * 10^22                 Cross multiply

x*6.02 * 10^23 = 1 * 3.01 * 10^22               Divide by 6.02*10^23

x = 3.01 * 10^22 / 6.02*10^23

x = 1/(2 * 10)

x = 1/20 mol

x = 0.05 mol

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b) The reactivity of alkali metals increases as atomic mass increases.

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Discuss some of the biotic (living) and abiotic (nonliving) factors in the chimps’ ecosystem that affect their behavior.
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Answer:

Diet:  fruit, leaves, bark, stems, seeds, eggs, insects, birds, small to medium sized primates - red tail monkeys, yellow baboons, bushbuck and warthogs.

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Different biotic and abiotic factors affect why the chimps live where they do. (Spatial Relationships)

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hope this was helpful (plz vote brainliest, I would appreciate it!) :)

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