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2 years ago

5

Most of the chemical reactions inside your body rely on protein catalysts called enzymes to take place. For example, the enzyme

pepsin helps to break down protein molecules in your stomach. What might happen if your stomach stopped producing pepsin?

1 answer:

charle [14.2K]2 years ago

5 0

It would affect protein digestion.

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

Zina [86]

<u>Given:</u>

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

<u>To determine:</u>

The identity of the unknown sample

<u>Explanation:</u>

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

Density = Mass/Volume

For the unknown sample

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

This matches closely with the calculated density of titanium

Ans: The unknown substance is made of titanium

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