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arlik [135]
3 years ago
7

How old are the oldest fossils on earth?

Chemistry
2 answers:
blondinia [14]3 years ago
5 0

the oldest fossils on earth are 3.5 billion years

sertanlavr [38]3 years ago
4 0

Over 3.5 billion years old! Hope this helps :)

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FrozenT [24]
6.0221367 rounded from the last digit would be 6.022137 but when using it calculations, you should just use 6.022 x 10^23.  
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13. Mercury has one of the lowest heat capacities. If 257J of heat are added to 5500g of mercury,the mercury's temp will increas
NikAS [45]

Given:

257J of heat

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H = mCpT

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serg [7]
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7 0
3 years ago
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Select the best single answer. Which of the following accurately lists compounds in order of increasing solubility in water? LiC
Ann [662]

Answer:

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Molecules with Hydrogen bonding usually very soluble in water. Ionic compounds are also very soluble in water because they form ions in solutions. Molecules that possess van der waal forces are usually insoluble in water because they are non-polar.

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4 0
2 years ago
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