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3 years ago

How do lewis dot structures help students visualize electron bonding arrangements?

1 answer:

6 0

The dots in the Lewis structure represents the valence electron of the atom/molecule. The valence electrons surrounds the atom/molecule. The rest all bonds are represented by line be it single, double or triple bond.

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1. Marisa determined the melting point of a substance to be 24.5C. Find the percent error of her measurement if the actual melti

USPshnik [31]

Answer:

$\%\ Error = 21.5\%$

Explanation:

Given

$Measured = 24.5$

$Actual = 31.2$

Required

Determine the percentage error

First, we need to determine the difference in the measurement

$Difference = |Actual - Measured|$

$Difference = |31.2 - 24.5|$

$Difference = |6.7|$

$Difference = 6.7$

The percentage error is calculated as thus:

$\%\ Error = \frac{Difference * 100\%}{Actual}$

$\%\ Error = \frac{6.7 * 100\%}{31.2}$

$\%\ Error = \frac{670\%}{31.2}$

$\%\ Error = 21.4743589744\%$

$\%\ Error = 21.5\%$ <em>approximated</em>

6 0

3 years ago

When iron metal reacts with sulfuric acid, it produces iron (III) sulfate and hydrogen gas. Balance the equation: Fe + H2SO4 → F

aleksklad [387]

2Fe + 3H2SO4 → Fe2(SO4)3 + 3H2

Explanation:

Changing the subscripts changes the products of the equation

7 0

2 years ago

Can anyone help me? thank you :))

Alex_Xolod [135]

8. 63360
9. 1000
if I got anything wrong please let me know thank you :)

6 0

3 years ago

describe how the current modern atomic theory and model differs from the model jj Thompson proposed ?

myrzilka [38]

J.J Thompson’s model shows a sphere with electrons that are moving around freely. However, Thompson’s model does not show protons or neutrons. The model that we have today gives a clearer structure showing protons, neutrons, and electrons inside an atom.

6 0

3 years ago

Write A balanced equation showing the formation of copper (II) nitrite from its elements

34kurt

Answer:

Cu(s) + N₂(g) + 2O₂(g) ⟶ Cu(NO₂)₂(s)

4 0

3 years ago