3 years ago

3. What do we call atoms of the same elements with different mass numbers?

1 answer:

7 0

Answer:

Isotopes

Explanation:

We call atoms of the same elements with different mass numbers isotopes.

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Gekata [30.6K]

Answer: The mass percent of lead in lead (IV) carbonate is 63.32 %

Explanation:

The given chemical formula of lead (IV) carbonate is $Pb(CO_3)_2$

To calculate the mass percentage of lead in lead (IV) carbonate, we use the equation:

$\text{Mass percent of lead}=\frac{\text{Mass of lead}}{\text{Mass of lead (IV) carbonate}}\times 100$

Mass of lead = (1 × 207.2) = 207.2 g

Mass of lead (IV) carbonate = [(1 × 207.2) + (2 × 12) + (6 × 16)] = 327.2 g

Putting values in above equation, we get:

$\text{Mass percent of lead}=\frac{207.2g}{327.2g}\times 0100=63.32\%$

Hence, the mass percent of lead in lead (IV) carbonate is 63.32 %

4 0

2 years ago

Rama09 [41]

N₂O₃

3 moles oxgyen atoms in 1 mole .

hope this helps!

7 0

2 years ago

ANTONII [103]

The correct answer would be 3.49 times 10^ minus 24 molecules

6 0

3 years ago

Delvig [45]

The answer is sodium (Na)

Let me know if u have anymore questions ☺

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3 years ago

yan [13]

The answer is A. The electrons orbit the protons, which are at the center of the atom.

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2 years ago