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inna [77]
3 years ago
11

Can y’all help me with this question How many atoms are found in the chemical formula below Al2( SiO3)2

Chemistry
1 answer:
Arte-miy333 [17]3 years ago
7 0

Answer:

the answer is 10

Explanation:

Al2 is 2 atoms by itself

(SiO3)2 is 8 because Si is a single atom and O3 is 3 oxygen atoms but because of the subscript outside of the parentheses it doubles and becomes 2 and 6 respectively

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A food web is a diagram that shows how different food chains connect. true or false​
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Answer:

true

Explanation:

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3 years ago
The standard metric units of density are:<br> kg/N<br> g/cm3<br> kg/cm3<br> g/L
Anon25 [30]

Answer;

= g/cm^3

Explanation;

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8 0
3 years ago
Read 2 more answers
The pH of an acid solution is 5.82. Calculate the Ka for the monoprotic acid. The initial acid concentration is 0.010 M.
blagie [28]

Answer:

The answer is

<h3>Ka = 2.29 \times  {10}^{ - 14} moldm^{ - 3}</h3>

Explanation:

The Ka of an acid when given the pH and concentration can be found by

<h3>pH =  -  \frac{1}{2}  log(Ka)  -  \frac{1}{2}  log(c)</h3>

where

c is the concentration of the acid

From the question

pH = 5.82

c = 0.010 M

Substitute the values into the above formula and solve for Ka

We have

<h3>5.82 =   - \frac{1}{2}  log(Ka)  -  \frac{1}{2}  log(0.010)</h3><h3 /><h3>-  \frac{1}{2}  log(Ka)  = 5.82 + 1</h3><h3 /><h3>-  \frac{1}{2}  log(Ka)  = 6.82</h3>

Multiply through by - 2

<h3>log(Ka)  =  - 13.64</h3>

Find antilog of both sides

We have the final answer as

<h3>Ka = 2.29 \times  {10}^{ - 14} moldm^{ - 3}</h3>

Hope this helps you

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Which items are used to show elevation, relief, and slope on a topographic map? Check all that apply. topographic lines contour
Sergio [31]

Answer:

contour lines

index contours

contour interval

Explanation:

4 0
3 years ago
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