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3 years ago

4) express 55mg in kilograms

Chemistry

1 answer:

artcher [175]3 years ago

6 0

55 mg =

.00005500000 kg

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Marcus measured the masses and volumes of samples of four different substances, and he calculated their densities. The table sho

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Given:

Calculated density values-

Aluminum = 2.7 g/cm3

Copper = 9.0 g/cm3

Iron = 7.9 g/cm3

Titanium = 4.8 g/cm3

Unknown sample mass = 9.5 g

Sample volume = 2.1 cm3

To determine:

The identity of the unknown sample

Explanation:

'Density' is a physical parameter which can be used to identify the nature of the unknown substance.

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For the unknown sample

Density = 9.5 g/2.1 cm3 = 4.52 g/cm3

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3 years ago

If the molecule C6H12 does not contain a double bond, and there are no branches in it, what will its structure look like?

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I have attached a photo of the structure.
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3 years ago

A fossil was analyzed and determined to have a carbon-14 level that is 70 % that of living organisms. The half-life of C-14 is 5

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Answer: 2948

Explanation:

Half life is the amount of time taken by a radioactive material to decay to half of its original value.

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Expression for rate law for first order kinetics is given by:

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where,

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Thus the fossil is 2948 years old.

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3 years ago

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IceJOKER [234]

Answer:

last one

Explanation:

The elements classified as metalloids are boron, silicon, germanium, arsenic, antimony, tellurium, and polonium.

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