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mestny [16]
3 years ago
9

Why is elemental zinc considered a pure substance?

Chemistry
1 answer:
Veseljchak [2.6K]3 years ago
7 0

Answer:  C... Because Zinc is made of only one type of atoms.

Explanation: All elements are made of one type of atom. Pure gold is made out of only gold atoms, silver out of only silver atoms, etc.

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What is the Lewis structure for NaCl ​
Ipatiy [6.2K]

Answer:

Na has 2 valence electrons where Cl has six.

The lewis structure would be Na and Cl side by side, but make 8 dots around the Cl atom. Two on the top, bottom and each side of the Chlorine atom.

7 0
3 years ago
For a theoretical yield of 23 g and actual
solong [7]

Answer:

5. 56.5217

Explanation:

Calculate percent yield by (actual yield / theoretical yield) times 100

(13/23) x 100 = 56.52173913

6 0
3 years ago
An alkyne with the molecular formula C5H8 was reduced with H2 and Lindlar's catalyst. Hydroboration-oxidation of the resulting a
irinina [24]

Since the addition of the H2O in the last step of hydroboration is anti-Markovnikov, the starting material is 1-pentyne.

The addition of H2 to C5H8 yields an alkene when a Lindlar catalyst is used. Recall that the Lindlar catalysts poisons the process so that the addition do not go on to produce an alkane.

When hydroboration is carried out on the alkene, we are told that a primary alcohol was obtained. We must note that in the last step of hydroboration, water is added in an anti- Markovnikov manner to yield the primary alcohol. Hence, the starting material must be 1-pentyne as shown in the image attached.

Learn more: brainly.com/question/2510654

6 0
3 years ago
Scientific Method
Leona [35]

Answer:

Problem,  Variables,  Hypothesis,  Research,  Procedure,  Data, Conclusion.

Explanation:

First, you have to know what the problem that you're talking about is. Then, you have to know the independent, dependent, and controlled variables are in order to make a hypothesis. Then do research about the topic. After that, you make the procedure your experiment, if that's what your doing. Then after the experiment, you find the data. Using that data, you make a conclusion.

4 0
3 years ago
Rate 2021 so far<br> 1/5<br> 2/5<br> 3/5<br> 4/5<br> 5/5
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Answer:

Is this an actual question that you had for school?

Explanation:

4 0
3 years ago
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