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3 years ago

Question 1

Chemistry

1 answer:

VladimirAG [237]3 years ago

6 0

Answer:

5:4

Explanation:

The equation given is balanced. There are 5 O2's on the left (reactant side) and then 4 H2O's on the right (product side). Thus, it's a 5:4 ratio.

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In order to determine the magnetic properties of phosphorus atom we need to find out the number of unpaired electrons present in

Papessa [141]

Answer:

Think of it this way If you have a phosphorus atom whats its oposites once you found that out you may be able to find the answer

Explanation:

Hope this helps :)

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3 years ago

Make a paragraph with the word barometer and weather vane and anemometer and aerovane

koban [17]

Answer:

Anemometers measure wind speed and wind vanes measure wind direction. A typical wind vane has a pointer in front and fins in back. When the wind is blowing, the wind vane points into the wind.Barometers, manometers and anemometers are all scientific instruments. Scientists use barometers and manometers to measure atmospheric pressure, while anemometers measure wind speed.

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3 years ago

If 200.0 g of copper(II) sulfate react with an excess of zinc metal, what is the theoretical yield of copper? 1.253 g 50.72 g 79

Helen [10]

1)we need a balanced equation: CuSO₄ + Zn ---> ZnSO₄ + Cu

2) we need to convert the grams of CuSO₄ to moles using the molar mass.

molar mass CuSO₄= 63.5 + 32.0 + (4 x 16.0)= 160 g/mol

$200.0 g CuSO_4 ( \frac{1 mol}{160 grams} )= 1.25 mol CuSO_4$

3) convert moles of CuSO₄ to moles of Cu

$1.25 mol CuSO_4 ( \frac{1 mol Cu}{1 mol CuSO_4} )= 1.25 mol Cu$

4) convert moles of Cu to grams using it's molar mass.

molar mass Cu= 63.5 g/mol

$1.25 mol (\frac{63.5 grams}{1 mol} )= 79.4 grams Cu$

I did it step-by-step as the explanation but you can do all of this in one step.

$200.0 g CuSO_4 ( \frac{1 mol CuSO_4}{160 g} ) ( \frac{1 mol Cu}{1 mol CuSO_4} ) ( \frac{63.5 grams}{1 mol Cu} )= 79.4 grams Cu$

4 0

4 years ago

How should I write balanced net ionic equation for this reaction?

Maksim231197 [3]

Answer:

Explanation:

Assumptions

They would ionize completely, or you must assume that.
The volumes must be the same as well.
0.11M Cu(NO3)2 ===> 0.11MCu2+ + 0.22 NO3-

Note

The concentrations would merely add. All things change if the assumptions I've made are not true.

3 0

3 years ago

What mass of iron(III) oxide will be formed if 9.30 L of oxygen at STP react with excess iron?

iragen [17]

Answer:

Explanation:

because that plot and the iron

4 0

3 years ago