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3 years ago

Where is most of the mass found in an atom

2 answers:

8 0

Most of the mass in an atom is found in the nucleus because the nucleus holds the neutrons and the protons, the electrons orbit in the cloud, and we do not count the electrons as having any weight in an atom.

IgorLugansk [536]3 years ago

7 0

massive livand that sarah or someone is how u do it

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Imagine a planet that has a similar atmospheric pressure to Earth (760 mmHg), but different concentrations of gases in its atmos

vaieri [72.5K]

Answer:

76 mmHg

Explanation:

The partial pressure of a gas in an ideal gas mixture is the pressure that this gas would exercise if it was alone in the same temperature of the gas mixture.

For the Raoult's law, we can determinate the partial pressure of a gas(Pa) knowing the total pressure (P) and its molar fraction(Xa):

Pa = XaP, so for the oxygen :

Pa = 0.10x760

Pa = 76 mmHg

6 0

3 years ago

Common salt besides being used in kitchen can also be used as the raw material for making.

Anon25 [30]

Common salt besides being used in kitchen can also be used as the raw material for making washing soda and baking soda.

The overall balanced reaction for washing soda preparation:

2NaCl + CaCO3 → Na2CO3 + CaCl2

NaCl is sodium chloride or common salt

Na2CO3 is sodium carbonate or washing soda

CaCO3 is calcium carbonate or limestone

The overall balanced reaction for baking soda preparation:

NaCl + CO2 + NH3 + H2O → NaHCO3 + NH4Cl

Baking soda (NaHCO₃ - sodium bicarbonate) is white, solid, crystalline salt or appears as a fine powder.

NH3 is ammonia

CO2 is carbon (II) oxide

More about baking soda: brainly.com/question/20628766

#SPJ4

3 0

1 year ago

Write a brief passage describing a neutral atom of nitrogen-14 (N-14). Describe the number of protons, neutrons, and electrons i

Inessa [10]

In nitrogen-14, there are 7 protons, 7 neutrons, and 7 electrons. The protons and neutrons are in the nucleus, and the electrons are in the electron shells. The atomic number is the number of protons, the mass number is the number of protons AND neutrons, and the atomic mass is the average of the masses of all isotopes.

5 0

3 years ago

Read 2 more answers

As the [H+] in a solution decreases, what happens to the [OH–]? A. It increases and the pH increases. B. It increases and the pH

AleksAgata [21]

<h3><u>Answer;</u></h3>

D. It decreases and the pH increases.

<h3><u>Explanation;</u></h3>

pH is a measure of the hydorgen ion concentration of a solution. Solutions with a high concentration of hydrogen ions have a low pH and solutions with a low concentrations of H+ ions have a high pH.
<em><u>[H+] and [OH-] are inversely related. Therefore; As the concentration of H+ increases the pH decreases. Since the concentrations of H+ and OH- are inversely proportional, as one goes up, the other goes down. </u></em>
<em><u>Therefore, an increase in OH- concentration will correspond to an increase in pH and a decrease in the concentration of H+.</u></em>

5 0

3 years ago

Read 2 more answers

What molecules have 5 carbon atoms and 12 hydrogen atoms

goldfiish [28.3K]

ANSWER

THE PENTANES

EXPLANATION

he word for5 in Greek is PENT like the 5 sided and 5 angled building in Wachington the PENTagon.

SO C5H12 IS PENTAND BECAUSE IT HAS NO DOUBLE BONDAS IT IS AN ALKANE

SO SO C5H12 IS PENT-ANE PENTANE AND THERE ARE MULTIPLE FORMS OF IT

4 0

3 years ago