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Setler79 [48]
3 years ago
11

38 mL of a gas was collected at 581 mm Hg and 25 degrees Celsius. What would the volume be at standard pressure (560 mm Hg) if t

he temperature remained constant?
Chemistry
1 answer:
Talja [164]3 years ago
7 0
Idk man sorry nfnnekernsekekee
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Groundwater in an area flows at a speed of 4km/h. How long would it take the water to flow 10 km t it’s springs
joja [24]
You want to divide 10 by 4 to get the number of hours it will take for the water to get to the springs, which is 2.5, so it would take the water 2.5 hours to revel to it’s spring
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Treatment of phenol with excess aqueous bromine is actually more complicated than expected. A white precipitate forms rapidly, w
Anettt [7]

Answer:

Please see attachment

Explanation:

Please see attachment

8 0
2 years ago
Copper was the first metal to be produced from its ore because it is the easiest to smelt, that is, to refine by heating in the
Ganezh [65]

Answer:

57.48%

Explanation:

Calculate the mass of 1 mole of malachite:

MM Cu = 63.55

MM O = 16.00

MM H = 1.01

MM C = 12.01

(Cu_{2}(OH)_{2}CO_{3})

A mole of malachite has:

2 moles of Cu

5 moles of O

2 moles of H

1 mole of C

MW Malachite = 2*MM(CU) + 5*MM(O) + 2*MM(H) + 1 *MM(C)

MW Malachite = 2*63.55 + 5*16.00 + 2*1.01 + 1*12.01

MW Malachite = 221.13

Mass of Cu in a mole of Malachite = 2*MM(CU) = 127.1

Now divide the mass of Cu by the mass of Malachite

%Cu = \frac{127.1}{221.13} =0.5748=57.48%

7 0
3 years ago
Why helium is duplet ??​
Llana [10]

Answer:

The outermost shell of helium for example is filled with only two electrons. Hydrogen and lithium become stable by acquiring the electronic configuration of the nearest inert gas, which is helium. This is the duplet (or duet) rule.

Explanation:

6 0
3 years ago
Read 2 more answers
Which of the following would be expected to have the lowest first ionization energy?
scoundrel [369]

Explanation:

o2- Due to lowest Zeff.

I had that question and my answer was this. because you did not put options.

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2 years ago
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