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3 years ago

Together, the protons and neutrons are called what?

Chemistry

2 answers:

mario62 [17]3 years ago

3 0

I think B. is the correct answer i hope i helped

goldfiish [28.3K]3 years ago

3 0

Answer:The correct answer is 'nucleons'.

Explanation;

An atom is a structural unit of matter.It consist of three subatomic particles: electrons, protons, and neutrons.

Protons and neutrons are located at center of an atom where whole mass of an atom is concentrated that is in the nucleus of a atom.

Protons and neutron being located in nucleus are also known as nucleons.

Where as electrons revolve around the nucleus in different orbits inside an atom.

Hence, the correct answer is 'nucleons'.

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Which of these units of pressure are equal in size

777dan777 [17]

Answer: option 1. i and ii

Explanation:

4 0

3 years ago

In the laboratory, a general chemistry student measured the pH of a 0.529 M aqueous solution of phenol (a weak acid), C6H5OH to

Artyom0805 [142]

Answer:

The dissociation constant of phenol from given information is $9.34\times 10^{-11}$ .

Explanation:

The measured pH of the solution = 5.153

$C_6H_5OH\rightarrow C_6H_5O^-+H^+$

Initially c

At eq'm c-x x x

The expression of dissociation constant is given as:

$K_a=\frac{[C_6H_5O^-][H^+]}{[C_6H_5OOH]}$

Concentration of phenoxide ions and hydrogen ions are equal to x.

$pH=-\log[x]$

$5.153=-\log[x]$

$x=7.03\times 10^{-6} M$

$K_a=\frac{x\times x}{(c-x)}=\frac{x^2}{(c-x)}=\frac{(7.03\times 10^{-6} M)^2}{ 0.529 M-7.03\times 10^{-6} M}$

$K_a=9.34\times 10^{-11}$

The dissociation constant of phenol from given information is $9.34\times 10^{-11}$ .

4 0

4 years ago

Acetylene gas is often used in welding torches because of the very high heat produced when it reacts with oxygen gas, producing

UkoKoshka [18]

Answer: 1.2 moles of carbon dioxide is produced for the given value of oxygen.

Explanation:

The chemical reaction for the combustion of acetylene follows the equation:

$2C_2H_2+5O_2\rightarrow 4CO_2+2H_2O$

By stoichiometry of the reaction:

5 moles of oxygen produces 4 moles of carbon dioxide.

So, 1.5 moles of oxygen will produce = $\frac{4}{5}\times 1.5=1.2mol$ of carbon dioxide.

Hence, 1.2 moles of carbon dioxide is produced for the given value of oxygen.

4 0

4 years ago

Which of the following minerals scratches

Arada [10]

Answer:

b. diamond

Explanation:

Diamond is the hardest known naturally occurring substance. And it will scratch any other minerals below it on the moh's scale of hardness.

Fluorite is below diamond in the scale of hardness and it will readily scratch it.
Talc, is the softest mineral, it will not scratch fluorite
Both gypsum and calcite also below fluorite.
They will not scratch this mineral.

5 0

3 years ago

Hello people ~

son4ous [18]

The m.p. and b.p. of Po, is lower than Te due to

a) inert pair effect

7 0

2 years ago