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3 years ago

Between energy and life which one comes first answer with scientific reason

Chemistry

1 answer:

NemiM [27]3 years ago

6 0

Explanation:

While the sun is an excellent source of energy, not all forms of life can utilize the sun's energy directly. This lesson describes how plants transform the sun's energy into potential energy stored in sugar, how living organisms utilize energy in sugar to perform work, and how the relationship between photosynthesis and cellular respiration is necessary for life.

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The answers are in the picture. this us the question, An increase in carbon dioxide production has led to an increase in global

Llana [10]

Answer: D

Explanation:

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3 years ago

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Bismuth oxide reacts with carbon to form bismuth metal:

lesya692 [45]

Answer:

(a) 1.92 moles of Bi produced.

(b) 80.6 grams

Explanation:

Balanced equation: Bi2O3(s) + 3C(s) → 2Bi(s) + 3CO(g)

1st find moles of Bi2O3:

Bi2O3 has Mr of 466 and mass of 447 g

$\hookrightarrow moles = \frac{mass}{Mr}$

$\hookrightarrow moles = \frac{447}{466}$

$\hookrightarrow moles = 0.959227$

2nd find moles of Bi:

Bi2O3 : 2Bi

→ 1 : 2 ------ this is molar ratio.

→ 0.959227 : (0.959227)*2

→ 0.959227 : 1.91845

→ 0.959227 : 1.92

Therefore 1.92 moles of Bi was produced.

3rd Find moles of 3CO:

Bi2O3 : 3CO

1 : 3

0.959227 : (0.959227 )*3

0.959227 : 2.87768

3CO has 2.87768 moles and we know the Mr is 28.

$\hookrightarrow mass = moles * Mr$

$\hookrightarrow mass = 2.87768 * 28$

$\hookrightarrow mass =80.575$ g

Therefore 80.575 grams of CO was produced.

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3 years ago

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Match each term with its correct description:

Artemon [7]

Answer:

Explanation:

Hydrocarbon:

a = An organic compound made up of only carbon and hydrogen.

Such as alkane, alkene, alkyne.

Cyclic hydrocarbon:

c = Carbon chain that form rings.

Such as benzene, cyclo heptane etc

Isomers:

d = Compounds with same molecular formula and different structural formula.

Alkanes:

e = refers to saturated hydrocarbons, no matter the shape

such as methane, ethane, propane etc.

Alkene:

f = Any hydrocarbon that have at lest one carbon carbon double bond.

such as ethene, propene, butene

Saturated hydrocarbons:

b = Carbon atoms are saturated with so many hydrogen atoms that no more bonds may be formed

such alkanes.

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4 years ago

What’s the most density thing out of

Oksanka [162]

Answer:

Iron is the densest out of the given options.

Explanation:

Oxygen

1.429 g/L

Water

1000 g/L

Hydrogen Peroxide

1450 g/L

Iron

7874 g/L

Iron Oxide

5240 g/L

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3 years ago

Picture has the question

xenn [34]

Answer:I believe it is 5

Explanation:

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4 years ago

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Between energy and life which one comes first answer with scientific reason​

Between energy and life which one comes first answer with scientific reason