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zhenek [66]
3 years ago
14

Each element possesses unique chemical and physical properties. true or false

Chemistry
1 answer:
g100num [7]3 years ago
8 0
True. An element's properties are based on their atomic numbers, atomic masses and electron configurations.


Hope it helped!
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Write an equation for the reaction that takes place in a luminous flame assuming the laboratory gas is Butane
Margarita [4]

Answer:

Fire's basic combustion equation is: fuel + oxygen —> carbon dioxide + water, a line many of us had drummed into us by school teachers. However, combustion reactions do not proceed directly from oxygen to carbon dioxide.

Explanation:

Fire's basic combustion equation is: fuel + oxygen —> carbon dioxide + water, a line many of us had drummed into us by school teachers. However, combustion reactions do not proceed directly from oxygen to carbon dioxide.

4 0
3 years ago
The diagram shows the displayed formula of a substance. Is this an element, a compound or a mixture?
STALIN [3.7K]
<h3>Answer:</h3>

A compound

<h3>Explanation:</h3>
  • The diagram above shows a compound.
  • An element is a pure substance that contains similar types of atoms and can not be broken down into simpler units using chemical means.
  • A compound is made up of two or more elements that are chemically combined. It contains atoms of different elements and its properties are different from those of individual elements.
  • For example, the above figure shows a compound made up of hydrogen atoms, carbon atoms, and an oxygen atom.
  • A mixture, on the other hand, is a substance that contains two or more components that are physically combined.
3 0
4 years ago
Farmers spray pesticides to protect fruits from pests. What is a possible harmful effect of using pesticides
dsp73

The fertilizer they're putting down on the fields, will eventually run into waterways and contaminate the water and make the PH levels out of wack and cause the water to be polluted, it will also cause coral bleaching  

5 0
3 years ago
Read 2 more answers
How many molecules are in 4K2CO3 ​
Stels [109]

Answer: 5 molecules

Explanation:

2 molecules of K and 3 molecules of O

4 0
3 years ago
How many atoms in 0.35 moles of Oxygen?
svp [43]

The answer is: 11 g .

How many molecules are in 0.35 moles?

Explanation: So, I have 0.35 moles of ethanol: thus I have 0.35×NA ethanol molecules . Now NA=6.022×1023 .

Thus, 0.25 mole of oxygen contains 1.505×1023 molecules.

One mole of oxygen atoms contains 6.02214179×1023 oxygen atoms

4 0
3 years ago
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