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Alex17521 [72]
3 years ago
11

How much does a gold bar wiegh and how much is it wotrth

Chemistry
1 answer:
Katena32 [7]3 years ago
3 0
It depends on the gold bar.  Gold bars come in all diferent sizes.  However how much its worth depends on how big it is.  Gold is $1,320 per ounce.
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Which part of the crust is the thickest
Sergio039 [100]

Answer:

I'll take a gander at your question

Explanation:

If you mean the Earth's crust, your answer is The Mantle.

5 0
3 years ago
The following reaction is found to be at equilibrium at 25 celcius: 2SO3--->O2 + 2SO2 + 198kJ/mol. If the value for Kc at 25
kondaur [170]

Answer:

D.) Products are weakly favored

Explanation:

For the reaction:

2SO₃ ⇄ O₂ + 2SO₂ + 198kJ/mol

The kc is defined as:

kc = [O₂] [SO₂]² / [SO₃]²

As the kc is 8,1:

8,1 [SO₃]² =  [O₂] [SO₂]²

The products are favored 8,1 times. This is a weakly favored because the usual kc are in the order of 1x10⁴. Thus, right answer is:

D.) Products are weakly favored

I hope it helps!

4 0
3 years ago
Match the substance with its chemical formula.
ch4aika [34]
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4 0
3 years ago
Read 2 more answers
Oxygen is denoted as 16O *. How many protons and neutrons does an oxygen atom have?
Lena [83]
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7 0
3 years ago
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How many moles of oxygen are in 25.45 g of caco3?
emmainna [20.7K]
From the periodic table:
mass of oxygen = 16 grams
mass of calcium = 40 grams
mass of carbon = 12 grams
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To know the number of oxygen moles in 25.45 grams, we will simply do cross multiplication as follows:
number of oxygen moles = (25.45 x 3) / 100 = 0.7636
3 0
3 years ago
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