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2 years ago

PLEASE HELP WILL RATE THE BRAINLIEST

1 answer:

4 0

The Plum Pudding model of the atom was like a modernchocolate chip cookie it had subatomic particles embedded inside it in no particular arrangement

the gold foil experiment proved that there was a lot of empty space in an atom Because of the launched Particles.mostly deflected but some went through the foil

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PLEASE HELP ASAP!!!

mamaluj [8]

Answer:The approximate atomic mass of lead is 207.24 amu.

Explanation:

Abundance of isotope (I) = 1.4% = 0.014

Atomic mass of the Isotope (I) = number protons + number of neutrons = 82 + 122 = 204 amu

Abundance of isotope (II) = 22.1 % = 0.221

Atomic mass of the Isotope (II) = number protons + number of neutrons = 82 + 125 = 207 amu

Abundance of isotope (III) = 24.1% = 0.241

Atomic mass of the Isotope (III) = number protons + number of neutrons = 82 + 124 = 206 amu

Abundance of isotope (IV) = 52.4% = 0.524

Atomic mass of the Isotope (IV) = number protons + number of neutrons = 82 + 126 = 208 amu

Average atomic mass of an element =

$\sum(\text{atomic mass of an isotopes}\times (\text{fractional abundance)})$

Average atomic mass of lead =

$(204 amu\times 0.014+207 amu\times 0.221 amu+206\times 0.241+208 amu\times 0.524)=207.24 amu$

The approximate atomic mass of lead is 207.24 amu.

7 0

2 years ago

Why Xe have electronegativity?<br><br>

Elza [17]

Answer:

Unlike other noble gases, which are highly nonreactive, Kr and Xe have non-zero values of Electronegativity (3.00 and 2.60, respectively) because they do form compounds: indeed, the electronegativity is a fundamental property of atoms that defines how strong their pull on shared electrons is.

5 0

2 years ago

If mass = 20 grams and volume = 10 mL, what is the density of the material?

kompoz [17]

Answer:

2g/ml

Explanation:

d=m/v

d=20/10

d=2

3 0

1 year ago

What does carbon monoxide bind to blocks oxidative metabolism?

zavuch27 [327]

Metabolism is when you don’t gain weight after eating a lot.

8 0

3 years ago

I need help with that

prisoha [69]

Answer:

with what?

Explanation:

7 0

2 years ago