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MatroZZZ [7]
3 years ago
14

The combustion of ________ has added great quantities of carbon dioxide to the atmosphere. Group of answer choices

Chemistry
1 answer:
forsale [732]3 years ago
7 0

Answer:

Fossil fuels.

Explanation:

A fossil fuel is a fuel obtained from nature such as crude oil, coal, wood etc. The burning of fossil fuels releases tremendous amounts of carbon IV oxide into the environment causing a myraid of environmental problems paramount among them is global warming with its attendant consequences.

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One method of favoring the formation of an ester is to add excess acetic acid.
AleksandrR [38]

Answer: True

Explanation:

An ester refers to the class of organic compounds which react with water in order to produce organic acids, inorganic acids or alcohol. They are usually gotten from carboxylic acids.

A method of favoring the formation of an ester is to add excess acetic acid. Therefore, the above statement is true.

4 0
2 years ago
How many molecules of CO are produced when 2.73 moles of HPO3 react? 4HPO3 + 12C ----> 2H2 + 12CO + P4
Zina [86]
According to the balanced chemical equation:
4 HPO₃ + 12 C → 2 H₂ + 12 CO + P₄
4 moles of HPO₃       ---gives---> 12 moles of CO
2.73 moles of HPO₃  ---gives---> ? moles of CO
so number of moles of CO = \frac{(2.73 * 12)}{4} = 8.19 moles of CO
Number of molecules of CO = number of moles * Avogadro's number
                                       = 8.19 * (6.022 * 10²³) = 4.93 * 10²⁴ molecules
3 0
3 years ago
What is formed when atoms of elements combine?
Eva8 [605]

Answer:

compounds , because they're combined

7 0
2 years ago
Modern periodic table is less defective than mendeleev's periodic table. Give two reasons​
Talja [164]

Answer:

there is no chance of any defects. 2) The position of isotopes becomes clarified in modern periodic table. That is the main two reasons as to why modern periodic table is less defective than Mendeeleev's periodic table.

Explanation:

Reason 1:- It is based on atomic number.

Reason 2:-Problem regarding Position of isotopes is resolved.

Reason 3:-Problem of position of Cobalt and Nickel is resolved whigh were placed wrongly in mandeelev periodic table.

Reason 4:-Blank spaces which were there in mandeelev periodic table are no more vacant now.

4 0
2 years ago
Bronze is a(n)<br> A. Alloy<br> B. Pure substance.<br> C. Element.<br> D. Compound.
Verdich [7]

Answer:....

Explanation:...

4 0
2 years ago
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