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2 years ago

14

I need help with number 14

2 answers:

strojnjashka [21]2 years ago

7 0

The ionic compound produced would be Aluminum Oxide or Al2O3.

- The answer is C

Crank2 years ago

6 0

Al3+ & O2-
Using the cross method this is easy to change into the ionic compound.
The number in front of the charge of the opposite ion will be the subscrpit.
so is would be Al2O3 (with those numbers being subscrpit)

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PLEASE HELP! EXPLAIN HOW YOU GOT THE ANSWER AND I WILL MARK BRAINLIEST!

kow [346]

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3/4 prefer pop
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3 years ago

What is the quadrilateral and triangle and square

S_A_V [24]

They are parallelogram hopes that answer your question

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3 years ago

Fatima is on the track team. One day at practice, it took her 19 minutes to run 2 miles. Select the expression that gives this a

Aneli [31]

Answer:

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Step-by-step explanation:

6 0

3 years ago

Evaluate: 23 + x/8 for x = 8

sveta [45]

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8 0

3 years ago

Read 2 more answers

Charlie's garage has a rectangular floor space. Its length is 3 times its width. Charlie extends the width of his garage to 6 m,

MAXImum [283]

Answer:

The percentage change is 140%

Step-by-step explanation:

Given

$L= 3W_1$ ---- initial dimension

$W_2 = 6m$ --- new width

$A_2 = 45m^2$ --- new dimension

Required

The percentage increment

The length remains constant because only the width is extended.

The new area is:

$Area =Length * Width$

$A_2=L * W_2$

Make L the subject

$L = \frac{A_2}{ W_2}$

Substitute values for A and W

$L = \frac{45m^2}{6m}$

$L = \frac{45m}{6}$

$L = 7.5m$ --- this is the length of the garden

Calculate the initial width:

$L= 3W_1$

Make W1 the subject

$W_1 = \frac{1}{3} * L$

$W_1 = \frac{1}{3} * 7.5$

$W_1 = 2.5$

So, the initial area is:

$A_1 = L_1 * W_1$

$A_1 = 2.5 * 7.5$

$A_1 = 18.75$

The percentage change in area is:

$\%A = \frac{A_2 - A_1}{A_1}$

$\%A = \frac{45 - 18.75}{18.75}$

$\%A = \frac{26.25}{18.75}$

$\%A = 1.4$

Express as percentage

$\%A = 1.4*100\%$

$\%A = 140\%$

4 0

3 years ago