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Margarita [4]
3 years ago
7

A compound X has the following percentage composition 66.7% carbon, 11.1% hydrogen and 22.2% oxygen .Calculate the empirical for

mula of X.The relative molecular mass of X is 72 calculate the molecular formula​
Chemistry
1 answer:
Digiron [165]3 years ago
4 0

Explanation:

c. h. o

66.7%. 11.1%. 22.2%

____. ____. ____

12. 1. 16

1.558. 11.1. 1.39. (divide by the smallest)

1. 8. 1

empirical formula=ch8o

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What volume in kiloliters will a sample of Bay water occupy if it has a volume of 125 ml?
Mamont248 [21]
This question is basically asking us to convert the volume from mL to kL.

We can do this by setting up a multiplication problem and cancelling out units:

\frac{125mL}{1}* \frac{1L}{1000mL} * \frac{1kL}{1000L}  =1.25* 10^{-4}kL

So now we know that the Bay water will occupy 1.25x10^-4 kL.
6 0
3 years ago
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What are similarities and differences between ionization energy and electron affinity
Vladimir [108]
Ionization energy: the energy required to remove an electron from a neutral atom. Electron affinity: the energy change when a neutral atom attracts an electron to become a negative ion.
8 0
3 years ago
Compare and contrast the Ionization energies of groups 1&2 (Alkali and Alkaline metals) with the Ionization energies of grou
irinina [24]

Answer:

Ionization energy is the energy required to remove an electron from a specific atom. It is measured in kJ/mol, which is an energy unit, much like calories. The ionization energies associated with some elements are described in the Table 1. For any given atom, the outermost valence electrons will have lower ionization energies than the inner-shell kernel electrons. As more electrons are added to a nucleus, the outer electrons become shielded from the nucleus by the inner shell electrons. This is called electron shielding .

Explanation:

a little summary

Ionization energy refers to the amount of energy needed to remove an electron from an atom.

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Ionization energy increases from left to right across the periodic table.

3 0
3 years ago
Why is magnification important to the study of life science?
trapecia [35]

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magnification makes everything smaller so you can see smaller things up close and study them more

Explanation:

5 0
2 years ago
A fixed quantity of gas fills a volume of 10.6 liters at 638 torr and 83 C. Find the volume it will occupy if the pressure is 10
sukhopar [10]
According to this formula:
(P1V1) / T1 = (P2V2) / T2

convert T from C° to Kelvin:
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convert P from torr to atm:
1 torr = 0.00131578947 atm<span>
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By substitution in the previous formula:
(0.839474 x 10.6 ) / (356) = ( 1.415789 x V2 ) / 369
So:
V2 = 6.5 L</span>
5 0
3 years ago
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