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liq [111]
3 years ago
6

IF CORRECT ILL GIVE BRAINLIEST

Chemistry
1 answer:
Lynna [10]3 years ago
4 0

Answer:

Hydrogen = element

Carbon dioxide = compound

Water = compound

Zinc = element

Nitrogen = element

Salt = compound

Helium = element

Carbon monoxide = compound

Explanation:

An element and a compound are different when it comes to the types of atoms they possess. An element has only<u><em> one type of atom</em></u> while a compound has <u><em>two types of atoms.</em></u> For example, Hydrogen is an element because it has two atoms of the same type and that is, the "Hydrogen atom."

On the contrary, Carbon dioxide has<u><em> one carbon atom</em></u> and<u><em> two atoms for Oxygen.</em></u> Therefore, it is a compound because it has two types of atoms: <u><em>Carbon atom</em></u> and <em><u>Oxygen atom.</u></em>

Water has<u><em> two atoms of Hydrogen </em></u>and<u><em> one atom of Oxygen</em></u>. Therefore, it is a compound because it has two types of atoms: <u><em>Hydrogen atom</em></u> and <u><em>Oxygen atom</em></u>.

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The number of repetition of the Beta oxidation requires to fully convert 18 carbon activated fatty acid to Acetyl COA molecule is NINE.
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4 0
3 years ago
To a 25.00 mL volumetric flask, a lab technician adds a 0.250 g sample of a weak monoprotic acid, HA , and dilutes to the mark w
Basile [38]

Answer: The number of moles of the weak acid in the solution is 0.00396

Explanation:

To calculate the number of moles for given molarity, we use the equation:

\text{Molarity of the solution}=\frac{\text{Moles of solute}}{\text{Volume of solution (in L)}}      

a) {\text{Moles of}KOH=0.0846M\times 0.04683L=0.00396mol

The balanced chemical reaction is:

HA+KOH\rightarrow KA+H_2O  

1 mole of base uses = 1 mole of HA  

0.00396  moles of base use = \frac{1}{1}\times 0.00396=0.00396 moles of HA  

Thus the number of moles of the weak acid in the solution is 0.00396

6 0
3 years ago
Which of the following are examples of chemical changes? Select all that apply.
Natali5045456 [20]

Answer:

b. milk spoiling and c. firecrackers exploding

Explanation:

These are both chemical changes, the composition of them change when this happens and it cannot be reversed

6 0
2 years ago
How much energy would be released if 450.0 g of the substance completely reacted with oxygen?
SOVA2 [1]

Answer:

1.1853 kJ

Explanation:

4 0
4 years ago
Old thermometers contained very small amounts of mercury. The mercury in the photo has a melting point of -38.8 degrees Celsius.
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Answer:

••It's melting point equals -38.8 degrees Celsius because it is mercury. |••

Explanation:

This one makes the most sense out of the answers.

7 0
3 years ago
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