2 years ago

Why is productivity greatest near the ocean’s surface

Chemistry

1 answer:

Kobotan [32]2 years ago

5 0

Answer:

Sunlight penetrates the top layers of the ocean, so photosynthesis occurs there.

Explanation:

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Problems in Context Which separation method is operating in each of the following procedures? (a) Pouring a mixture of cooked pa

Serga [27]

Answer:

( a ) Filtration

( b ) sugar refining .

Explanation:

( a ) Filtration

By the process of filtration pasta from water can be removed , as pasta is not soluble in water , hence , by filtration , the solid pasta will remain in the filtration funnel , and the water will flow down , thereby , removing pasta from the water .

( b ) sugar refining

The raw sugar can be purified from the process of sugar refining .

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3 years ago

Psychologist work with "neurotics" more than psychotics. A-True B-False

dexar [7]

It would be FALSE!!!

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3 years ago

Can someone help me with these two questions?

guapka [62]

Answer:

Explanation:

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2 years ago

A compound that changes color when it comes in contact with an acid or a base is what?

Jobisdone [24]

It is called an indicator.

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2 years ago

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A 29.7 g sample of iron ore is treated as follows. The iron in the sample is all converted by a series of chemical reactions to

Softa [21]

Answer: The mass of iron in the ore is 10.9 g

Explanation:

We are given:

Mass of iron (III) oxide = 15.6 g

We know that:

Molar mass of Iron (III) oxide = 159.69 g/mol

Molar mass of iron atom = 55.85 g/mol

As, all the iron in the ore is converted to iron (III) oxide. So, the mass of iron in iron (III) oxide will be equal to the mass of iron present in the ore.

To calculate the mass of iron in given mass of iron (III) oxide, we apply unitary method:

In 159.69 g of iron (III) oxide, mass of iron present is $(2\times 55.85)=111.7g$

So, in 15.6 g of iron (III) oxide, mass of iron present will be = $\frac{111.7g}{159.69g}\times 15.6g=10.9g$

Hence, the mass of iron in the ore is 10.9 g

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2 years ago