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BartSMP [9]
2 years ago
15

How is the atomic mass of an atom calculated?

Chemistry
1 answer:
azamat2 years ago
8 0
Adding the number of protons by the number of neutrons
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<span>Sarcoplasmic reticulum</span>
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An atom has the following electron configuration 1s2 2s2 2p6 3s2 3p4 . How many valence electrons does this Atom have
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6

Explanation:

This atom is sulfur (if the electrons are equal to the protons/not an ion). You can tell the number of valence electrons by looking at the individual shell. The first shell (1s) can only hold 2 electrons. The second shell (2s and 2p) can hold 8 electrons. The third shell (3s and 3p), which is the valence shell, only has 6 out of its possible 8 electrons, so this atom has 6 valence electrons.

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3 years ago
If the temperature of a gas increased and the pressure remains the same what happens to the volume of gas?​
podryga [215]

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the answer is B.

Explanation:

The pressure increases... plus i had this same question

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3 years ago
PLZZZZZZZZZZZZZZZ HELP IF RIGHT WILL GIVE BRAINLIEST
ioda

Answer:

I guess it all of these

as life cycle of an organism can be predicted and yeah it begins with birth hatching or germination for mammals, animals and plants respectively. then it's same for the organism of the same species .

7 0
2 years ago
Suppose you have an Avogadro's number of nitrogen atoms. How many grams does this represent? Enter your answer to one decimal pl
shusha [124]

Answer:

2.3 x 10-23 g.

Explanation:

The mass of a single atom is the mass number, 14, is the mass in grams of one mole of carbon.

One mole of Nitrogen atom is 6.022 x 1023 atoms (Avogadro's number). This can then used to convert a nitogen atom to grams by the ratio:

mass of 1 atom / 1 atom = mass of a mole of atoms / 6.022 x 10^23 atoms.

mass of 1 atom = mass of a mole of atoms / 6.022 x 1023

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mass of 1 N atom = 2.325 x 10^-23 g

The mass of a single Nitrogen atom is 2.325 x 10-23 g.

3 0
3 years ago
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