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4 years ago

An atom contains 16 protons, 18 neutrons, and 16 electrons what is its mass number?

Chemistry

1 answer:

Oksanka [162]4 years ago

4 0

protons

neutrons

electrons

Right from the start, you know that you're indeed dealing with a neutral atom, since the number of protons it has in its nucleus is equal to the number of electrons it has surrounding its nucleus.

Now, an atom's atomic number,

, tells you how many protons it has in its nucleus. Nothing more, nothing less.

In your case, you are told that the atom contains

protons in its nucleus, which means that

will be equal to

A quick look in the periodic table will reveal that you're dealing with an atom of sulfur,

An atom's mass number,

, tells you how many protons and neutrons it contains in its nucleus. Since the number of protons is given by

, you can say that

no. of neutrons

In your case, the atom contains

neutrons in its nucleus. This means that

will be equal to

Finally, focus on the atom's electron configuration, which you know that must account for a total of

electrons.

Its noble gas shorthand notation, which uses the electron configuration of neon,

, the noble gas that comes before sulfur in the periodic table, will look like this

[

]

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given a density of 350 grams/cm3 and a mass of 25 grams. What is the volume using the equation involving density?

Eduardwww [97]

0.07cm³

Explanation:

Given parameters:

Density of the body = 350g/cm³

Mass of the body = 25g

Unknown:

Volume of the body = ?

Solution:

Density is the amount of substance contained in a volume of body. It is expressed as:

Density = $\frac{mass}{volume}$

Since the unknown is volume, we make it the subject of the expression;

Volume = $\frac{mass}{density}$

Volume = $\frac{25}{350}$ = 0.07cm³

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4 years ago

Which compound contains a triple bond?

Igoryamba

There are many compounds which contain triple bonds between two atoms. Few of the are as follow,

Nitrogen Molecule:

   N₂ or :N≡N:

Cyanide Ion:

  CN⁻ or [:C≡N:]⁻

Alkynes:
   R-C≡C-R

Carbon Monoxide:

CO or :C≡O:

Among given compounds Alkynes belong to a class of unsaturated hydrocarbons. The carbon atom in alkyne is sp hybridized. These unsaturated hydrocarbons have their own characteristic chemical properties.

6 0

3 years ago

Read 2 more answers

rite stepwise equations for protonation or deprotonation of this polyprotic species in water. What are the products of the first

adoni [48]

<u>Answer:</u> The products of the given chemical equation are $HCO_3^-\text{ and }OH^-$

<u>Explanation:</u>

Protonation equation is defined as the equation in which protons get added in the substance.

The chemical equation for the protonation of carbonate ion in the presence of water follows:

$CO_3^{2-}+H_2O\rightarrow HCO_3^-+OH^-$

By Stoichiometry of the reaction:

1 mole of carbonate ion reacts with 1 mole of water to produce 1 mole of hydrogen carbonate ion and 1 mole of hydroxide ion

Hence, the products of the given chemical equation are $HCO_3^-\text{ and }OH^-$

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4 years ago

which type of chemical bond would be formed between two elements having electron configuration of 1s2 2s2 2p6 3s2 and 1s2 2s2 2p

OLga [1]

The electron configuration
1
s
2
2
s
2
2
p
6
3
s
2
3
p
2
is the element Silicon.
The key to deciphering this is to look at the last bit of information of the electron configuration
3
p
2
.
The '3' informs us that the element is in the 3rd Energy Level or row of the periodic table. The 'p' tells us that the element is found in the p-block which are all of the Groups to the right of the transition metals, columns 13-18. The superscript '2' tells us that the element is found in the 2nd column of the p-block Group 14.

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3 years ago

Which subatomic particle is located outside the nucleus

Mrac [35]

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3 years ago