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rosijanka [135]
2 years ago
6

How many moles are equal to 89.23 g of calcium nitrate?

Chemistry
1 answer:
DanielleElmas [232]2 years ago
6 0

Answer:

23

Explanation:

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How many significant figures are there in the measurement 0.0034 Kg?
Mama L [17]

Answer:

2 significant figures

Explanation:

Your measurement will have 2 significant figures, the two non-zero digits.

<em>I hope this helps you out! :)</em>

8 0
2 years ago
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Silver-108 has how many protons, neutrons, and electrons
Bezzdna [24]

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Ag has atomic number 47 = 47 protons and 47 electrons. mass number is 108, neutrons = 108 - 47 protons = 61 neutrons.

Explanation:

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3 years ago
AgNO2+Na3PO4<br><br> Solve and predict if its a precipitate
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3 years ago
Calculate the ph of sweater which has a hydrogen ion concentration of 1 times 10 to the power of 8
telo118 [61]

Answer:

The pH of the sweater containing Hydrogen ion concentration

[H^{+}]=1\times 10^{-8} is

<u>8</u>

<u></u>

Explanation:

pH = It is the negative logarithm of activity (concentration) of hydrogen ions.

pH = -log([H+])

Now, In the question the concentration of [H+] ions is :

[H^{+}]=1\times 10^{-8}

pH = -log(1\times 10^{-8})

use the relation:

log(10^{-a})=a

pH= -(-8)

pH = 8

Note : <em><u> 1 times 10 to the power of 8 must be" 1 times 10 to the power of -8"</u></em>

If the concentration is

[H^{+}]=1\times 10^{8}

Then pH = -8 , which is not possible . So in that  case the pH calculation is by other method

5 0
3 years ago
What molarity is prepared when a solution contains 0.277 moles of calcium bromide in 500 mL of solution (must change mL to Liter
Vladimir79 [104]

Answer:

0.554M of Calcium Bromide

Explanation:

Molarity by defintion is #of moles of something/litres of solution.

Therefore, here, we have 0.277 moles of calcium bromide and 500mL (divide 500ml by 1000 to go from mL to L because for every 1L there's 1000mL) or 0.5L.

Molarity= 0.277/0.5 = 0.554M of Calcium Bromide

5 0
3 years ago
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