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Lapatulllka [165]
3 years ago
14

Explain where the weight of an atom is found what is responsible for that weight and why

Chemistry
1 answer:
padilas [110]3 years ago
6 0

Answer:

The majority of the weight in an atom is found in the nucleus.

Explanation:

The protons and neutrons that make up the nucleus of the atom may take up a tiny amount of space in comparison to the rest of the atom, but they are far more dense than the electrons that orbit the nucleus.

You might be interested in
Which part of atom determine the identity of a atom
aksik [14]

Answer:

protons

Explanation:

the number of protons in 1 atom determine the identity

5 0
3 years ago
3. At 35 C, a sample of gas has a volume of 256 ml and a pressure of 720.torr. What would the volume
STatiana [176]

Answer:

The volume will be 185.83 mL.

Explanation:

Gay-Lussac's law indicates that when there is a constant volume, as the temperature increases, the pressure of the gas increases. And when the temperature is decreased, the pressure of the gas decreases. Gay-Lussac's law can be expressed mathematically as follows:

\frac{P}{T} =k

Where P = pressure, T = temperature, k = Constant

Boyle's law says that the volume occupied by a given gaseous mass at constant temperature is inversely proportional to pressure. Boyle's law is expressed mathematically as:

P*V=k

Where P = pressure, V = volume, k = Constant

Finally, Charles's Law consists of the relationship that exists between the volume and the temperature of a certain quantity of ideal gas, which is kept at a constant pressure. For a given sum of gas at a constant pressure, as the temperature increases, the volume of the gas increases and as the temperature decreases, the volume of the gas decreases because the temperature is directly related to the energy of the movement of the gas molecules. .

In summary, Charles's law is a law that says that when the amount of gas and pressure are kept constant, the quotient that exists between the volume and the temperature will always have the same value:

\frac{V}{T} =k

Combined law equation is the combination of three gas laws called Boyle's, Charlie's and Gay-Lusac's law:

\frac{P*V}{T} =k

Studying two different states, an initial state 1 and a final state 2, it is satisfied:

\frac{P1*V1}{T1} =\frac{P2*V2}{T2}

In this case:

  • P1= 720 torr
  • V1= 256 mL
  • T1= 35 C= 308 K (being 0 C= 273 K)
  • P2= 1.25 atm= 950 torr (being 1 atm= 760 torr)
  • V2= ?
  • T2= 22 C= 295 K

Replacing:

\frac{720 torr*256 mL}{308 K} =\frac{950 torr*V2}{295 K}

Solving:

V2= \frac{295K}{950 torr} *\frac{720 torr*256 mL}{308 K}

V2= 185.83 mL

<u><em>The volume will be 185.83 mL.</em></u>

6 0
3 years ago
If you hadn't added quite enough hydrochloric acid to consume all the magnesium metal, what would be the effect of this error on
sweet-ann [11.9K]

If enough HCl is not added, the percent yield will be lower as all the magnesium metal has not reacted with HCl.

<h3>What is percent yield of a reaction?</h3>

The percent yield of a reaction is the ratio of the actual yield and the expected yield expressed as a percentage.

  • Percent yield = actual yield/expected yield × 100%

The reaction between magnesium metal and HCl liberates hydrogen gas and forms magnesium chloride salt.

If enough HCl was not added to react with all the magnesium metal, the actual yield will be lower.

Hence, percent yield will be lower as well.

Therefore, the percent yield will be lower if all the magnesium metal has not reacted with HCl.

Learn more about percent yield at: brainly.com/question/10046114

8 0
2 years ago
Balance this reaction ch3oh+02 c02 h20
slega [8]

Answer:

2CH3OH + 3O2 --> 2CO2 + 4H2O

This is called Combustion of Methanol

Explanation:

Count the numbers of atoms on each sides and try to get the same amount of quantity on each sides, so you'll eventually get "balanced".

or

Watch this video: "How to Balance CH3OH + O2 = CO2+ H2O (Combustion of Methanol)"

Good luck with future work! Keep studying chemistry!

- D

3 0
4 years ago
1. Convert 2.5 L at 105 kPa to its new volume at 40.5 kPa.
kirill115 [55]

Answer:

.9642 kPa

Explanation:

7 0
3 years ago
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