3 years ago

Ahhh helpppp:))))))))))

Chemistry

2 answers:

lys-0071 [83]3 years ago

7 0

Answer:

HKOB

Explanation:

riadik2000 [5.3K]3 years ago

4 0

Answer:

HKOB

Explanation:

hope it helps

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Does anyone know what the formula would be for Rhenium V Biphosphate?

Georgia [21]

Answer:Re3(PO4)2 I think I'm wrong

Explanation:

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2 years ago

When an electron in an atom moves from a higher, less stable level, down to a lower, more stable level, a photon is

Wittaler [7]

Answer:

Emitted

Explanation:

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3 years ago

What does the average atomic mass on the periodic table tell you?

never [62]

The atomic mass on the periodic table represents the sum of number of protons and number of neutrons.

Atomic mass = Number of protons + number of neutrons

Hope this helps!

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3 years ago

Naturally occurring neon exists as three isotopes. 90.51% is ne-20 with a mass of 19.99 amu, 0.27% is ne-21 with a mass of 20.99

gregori [183]

The atomic mass of an element is the average relative mass of its atoms as compared with an atom of carbon-12 whose mass is taken as 12. In terms of percentages of different isotopes, the average atomic mass can be determined as follows: $A_{average}$ = ∑( $p_{i}$ X $A_{i}$ )/100. Where, $p_{i}$ is the percentage abundance of isotope with atomic number $A_{i}$ .

So, average atomic mass of neon = $\frac{(90.51 X 19.99) + (0.27 X 20.99) + (9.22 X 21.99)}{100}$ = 20.177 amu.

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3 years ago

Which alkane is the isomer of butane called 2-methylpropane? A skeletal model of a 4-carbon chain has a straight line extending

solmaris [256]

Answer:

A three-carbon chain has a straight line extending from the center carbon.

Explanation:

Isomers are compounds having the same molecular formula but different structural formulas.

Butane and 2-methylpropane are constitutional isomers. Constitutional isomers differ in the way that the constituent atoms are connected to each other.

Butane is a straight chain compound while the compound 2-methylpropane consists of a three-carbon chain which has a straight line extending from the center carbon.

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2 years ago

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