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Tom [10]
3 years ago
15

HELP NEEDED ASAP !! VERY MUCH APPRECIATED ! CHEMISTRY

Chemistry
1 answer:
mash [69]3 years ago
5 0
Workings are in the picture! first you get moles of Fe2O3, then you get moles of Al and then you get mass of Al!

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What word is the biotic factor in this sentence:<br> Fish breath oxygen that is dissolved in water.​
Vladimir [108]

Answer: Fish

Explanation:

Biotic factor is one of the component of the ecosystem. It is the living component of the ecosystem. It is affected or influenced by the non-living or abiotic components of the ecosystem like water, air, sunlight, and others. Fish is an example of biotic factor which is dependent on abiotic component that is oxygen which is the chief gas required for the breathing. The oxygen is one of the components of the water. So, the oxygen is dissolved in water and the fish acquire the oxygen through water only.

4 0
3 years ago
1. How many metals, nonmetals and metalloids are there in the periodic table?
sweet-ann [11.9K]

Answer:

There are 110 elements known to us, out of which 92 are naturally occurring, while the rest have been prepared artificially. Elements are further classified into metals, non-metals, and metalloids..

Explanation:

Hope it helps you..

Y-your welcome in advance..

(;ŏ﹏ŏ)(ㆁωㆁ)

8 0
3 years ago
. Guillermo was finding it difficult to walk up the steps to his family’s apartment. His doctor thinks that his cells might not
morpeh [17]

Answer:

Because oxygen is the combustion  fuel and glucose  is the substrate needed for synthesis of energy as ATPs during cellular respiration.Therefore Guillermo lacks enough energy as ATPs in her  body cells, especially skeletal muscles cells to complete the task of ascending the s steps.

For all the mitochondrial in cells(sites of energy production)   to receive needed glucose,and other metabolites needed for  energy synthesis; an efficient transport system is needed, so that  these materials   are available  immediately, in required amount. This system is called circulatory system.

And for the the supply of combustion fuel (oxygen) needed for the completion of the ATP synthesis mechanisms;  respiratory systems which  convey oxygen from the external environments to the circulatory system through breathing mechanisms, for distribution is needed.

Thus the  doctor needs to test both the circulatory and respiratory systems.

Explanation:

4 0
3 years ago
List three reasons why nonvascular plants are important
weqwewe [10]

Answer:

They are food for some animals. Some animals use them for nesting material. Humans can dry and burn some types of nonvascular plants as a fuel.

Explanation:

Some nonvascular plants produce various nutrients that are passed to the soil and can be used by other plants. Also, nonvascular plants that cover a large surface area help maintain the cohesion of the land by reducing the risk of erosion. Nonvascular plants are also very important to animals.

3 0
3 years ago
Read 2 more answers
Janice needs to have a gastro-intestinal study. So she is given 375 mg of radiocontrast dye containing Barium-142. The half-life
katovenus [111]

After one half life, 188mg

46.9 mg of Ba-142

After 5 half lives

After 106 minutes

20 half lives , only 0.000358 mg remains

Hope this helps

5 0
3 years ago
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