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Mandarinka [93]
4 years ago
7

If a compound formula mass was experimentally determined to be 58, the chemical formula could be?

Chemistry
2 answers:
Aleks04 [339]4 years ago
5 0

Answer:

NaCl

Explanation:

If you follow traditional rounding, Na atomic mass is 23 and Cl atomic mass 35, 23 +35 = 58.

I was taught that Cl is one of the elements you round to 35.5, but this works if you’re not in an advanced chem class.

mojhsa [17]4 years ago
3 0
B because that is the one that is logical and the only one that makes sense
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Write the full electron configuration of the Period 2 element with the following successive IEs (in kJ/mol):
Julli [10]

Answer:

Boron (B) is the element whose IE matches with our data.

Electronic Configuration of boron: 1s^22s^22p^1

Explanation:

Ionization Energy (IE):

It is the minimum amount of energy which is required to remove the lose electron. If the electron is closer to the nucleus then greater amount of energy is required to remove the electron.

If we look from left to right in a period, ionization energy increases due stability of valance shell.

From the data given to us:

IE₁ = 801

IE₂ = 2427

IE₃ = 3659

IE₄ = 25,022

IE₅ = 32,822

Boron (B) is the element whose IE matches with our data.

Electronic Configuration of boron: 1s^22s^22p^1

Boron has 5 electrons (3 in valance shell) that's why it has 5 Ionization Energies.

6 0
3 years ago
Introduction: Chemical formulas represent ratios. To make H2O, you need two atoms of H for each atom of O; you would also need t
Nina [5.8K]

Answer:

The answer to your question is given below

Explanation:

To convert from Particles to grams, one must have a clear understanding of Avogadro's hypothesis. From the Avogadro's hypothesis, we can easily convert from mole to particles and to grams.

Avogadro's hypothesis gives us a background understanding that 1 mole of any substance contains 6.02x10^23 particles. With this in mind we can easily convert particles to grams and grams to particles.

Now consider the following example:

1. How many particles are there in 4g of carbon?

Solution:

From Avogadro's hypothesis, 1 mole of any substance contains 6.02x10^23 particles. This implies that 1 mole of carbon contains 6.02x10^23 particles.

1 mole of carbon = 12g

Now we can say that 12g of carbon contains 6.02x10^23 particles.

If 12g of carbon contains 6.02x10^23 particles,

then 4g of carbon will contain = (4x6.02x10^23) /12 = 2.01x10^23 particles.

The next example will teach us how to convert from particles to grams..

2. What mass of helium contains 4.2x10^24 particles.

Solution:

According to Avogadro's hypothesis,

1 mole of He contains 6.02x10^23 particles.

1 mole of He = 4g

We can thus, say that 4g of He contains 6.02x10^23 particles.

1f 4g of He contains 6.02x10^23 particles,

Then Xg of He contains 4.2x10^24 Particles i.e

Xg of He = (4x4.2x10^24)/(6.02x10^23)

Xg of He = 27.91g

Therefore, 27.91g of He contains 4.2x10^24 Particles

With the above illustrations I believe you have understood how to convert from grams to particles and from particles to grams.

7 0
3 years ago
Is water a compound or mixture
enyata [817]

Answer:

compiound

Explanation:

8 0
3 years ago
Read 2 more answers
What is the different between a mixture and a compound?
krek1111 [17]
A compound is 2 or more substances chemically combined, mixtures arent

4 0
3 years ago
Which of the following best describes the particles that make up lightning and the particles that make up the water in a bottle?
Blizzard [7]

Answer:

Those in lightning are charged and those in water are not charged.

Explanation:

The particles in lightning differs from those in a water in that water molecules are neutral and those of lightning are charged.

Lightning is made up of charged ions or particles that have either lost or gained electrons.

Lightning is produced as a burst or discharge of charged particles that are imbalanced withing the clouds.

Water molecules are made up of hydrogen and oxygen atoms which forms molecules held together by strong intermolecular and interatomic bonds.

Due to the sharing of electrons that has made this bonding possible, there is a net charge balance which leads to a neutrality.

Water is electrostatically neutral and not charged.

7 0
3 years ago
Read 2 more answers
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