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svlad2 [7]
3 years ago
9

Balance the following reactions CuO+S2

Chemistry
1 answer:
Natali [406]3 years ago
4 0
2CuO+S2 -------> 2Cu + 2SO
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Your friend Niko predicts that iron and silver nitrate will form when silver is placed into an iron (III) nitrate solution. Is t
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It is correct because iron is more reactive than silver.

Explanation:

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3 years ago
A 0.1025-g sample of copper metal is dissolved in 35 ml of concentrated hno3 to form cu2 ions and then water is added to make a
GalinKa [24]

Molarity is defined as number of moles of solute in 1 L of solution.

Here, 0.1025 g of Cu is reacted with 35 mL of HNO_{3} to produced Cu^{2+} ions.

The balanced reaction will be as follows:

Cu+3HNO_{3}\rightarrow Cu(NO_{3})_{2}+NO_{2}+H_{2}O

From the above reaction, 1 mole of Cu produces 1 mole of Cu^{2+}, convert the mass of Cu into number of moles as follows:

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n=\frac{0.1025 g}{63.55 g/mol}=0.0016 mol

Now, total molarity of solution, after addition of water is 200 mL or 0.2 L can be calculated as follows:

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Thus, molarity of Cu^{2+} is 0.008 M.



7 0
3 years ago
What determines the velocity of an object? Its acceleration at a given point in time Its weight in a given location Its displace
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We can confirm that the velocity of an object is determined by the displacement of the object over a period of time.

<h3>How do we know that displacement and time determine velocity?</h3>

We know this by analyzing the scientific formulas created to measure the velocity of an object. The formula for this is \frac{d}{t} , meaning displacement over a period of time. Since option 3 described this equation perfectly, we can say that this is the correct option.

Therefore, we can confirm that the velocity of an object is determined by the displacement of the object over a period of time.

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