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tekilochka [14]
3 years ago
13

Draw the lewis structure for c2h2 (whose skeletal structure is hcch). draw the molecule by placing atoms on the grid and connect

ing them with bonds. include all lone pairs of electrons.
Chemistry
1 answer:
NISA [10]3 years ago
4 0
<span>The Lewis structure of a compound can be generated by trial and error. c2h2 would turn into what is known as Ethyne. Two Hydrogens are on the top and lower parts and sandwiched in btwn these two is the chained portion of carbon-carbon and the 3rd and 4th hydrogen atom. Again the sequence for the carbon is a long drawn line chaining them together and remember on both sides on the left side top and lower branches is the second sets of Hydrogen. H: _____ :H C C _____ H: :H Remember that Hydrogen (H) atoms always go on the outside of a Lewis Structure.</span>
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The electronic configuration of an element is given below.
drek231 [11]

Answer:

C. It is reactive because it must gain two electrons to have a full outermost energy level.  

Step-by-step explanation:

The electron configuration of this element ends in 2s²2p⁴.

A filled energy level would end in 2s²2p⁶.

The element will be reactive, because it must gain electrons to have a full energy level, and it needs two more electrons to do this.

4 0
3 years ago
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Nataly [62]

Answer:

1) Constructive Interference

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QUESTION 3 (a) Ammonium sulphate, (NH),50, is a soluble salt and it is used in agriculture as fertiliser. 5 g of ammonium sulpha
nataly862011 [7]

Answer:

The equation: (NH₄)₂SO₄ = 2NH4(+) + SO4(-2)

The number of moles = 5 g / 132.14 g/mol = 0.038 mol

The number of molecules = 0.038 X 6.022x10^23 = 2.29x10^23

the number of positive ions present in the ammonium sulphate solution:

2 positive ions for every 1 molecule of (NH₄)₂SO₄

so 2 x 2.29x10^23 = 4.58x10^23

the number of negative ions present in the ammonium sulphate solution

1 negative ion for every 1 molecule of (NH₄)₂SO₄

so 1 x 2.29x10^23 = 2.29x10^23

the total number of ions present in the ammonium sulphate solution​

4.58x10^23 + 2.29x10^23 = 6.87x10^23

4 0
3 years ago
What is a small-ball shaped organelle that helps the cell break down nutrients and old cell parts.
Gemiola [76]
Lysosome: only ones that  break down old cell parts<span>
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6 0
2 years ago
A sample of a substance has a mass of 27.3 grams and a volume of 7.0 centimeters3. The density of this substance is
lora16 [44]

Answer:

The density of the substance is 3.9 grams per cubic centimeter.

Explanation:

Given mass=27.3 grams

volume=7 cubic centimeter

We need to find the density.

Density of a substance can be calculated by dividing mass of substance by volume of a substance  

Density\ =\ \frac{mass}{volume}

\\Therefore\ density\ =\ \frac{27.3}{7} \ =\ 3.9\ \frac{gm}{cm^3}

Hence Density of the substance is 3.9gm/cm^3.

4 0
3 years ago
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