The number of atoms will be 3.131 x [tex]10^{25}[/tex], 7.8286 x [tex]10^{24[/tex], and 7.8286 x [tex]10^{24[/tex] atoms respectively.
Number of atomsThere are 6.022 x [tex]10^{23}[/tex] atoms in 1 mole of every substance.
52 moles of Ar will contain 52 x 6.022 x [tex]10^{23}[/tex] = 3.131 x [tex]10^{25}[/tex] atoms
52 u of He = 52/4 = 13 moles of He.
13 moles of he = 13 x 6.022 x [tex]10^{23}[/tex] = 7.8286 x [tex]10^{24[/tex] atoms
52 g of He = 52/4 = 13 moles of He.
13 moles of he = 13 x 6.022 x [tex]10^{23}[/tex] = 7.8286 x [tex]10^{24[/tex] atoms
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1. The number of atoms in 52 mole of Ar is 3.13×10²⁵ atoms
2. The number of atoms in 52 u of He is 7.83×10²⁴ atoms
3. The number of atoms in 52 g of He is 7.83×10²⁴ atoms
Avogadro's hypothesis1 mole of substance = 6.02×10²³ atoms
1. How to determine the number of atoms in 52 mole of Ar1 mole of Ar = 6.02×10²³ atoms
Therefore,
52 mole of Ar = 52 × 6.02×10²³
52 mole of Ar = 3.13×10²⁵ atoms
2. How to determine the number of atoms in 52 u of He4 u of He = 1 mole
Thus,
52 u of He = 52 / 4
52 u of He = 13 moles
From Avogadro's hypothesis,
1 mole of He = 6.02×10²³ atoms
Therefore,
13 moles of He = 13 × 6.02×10²³
13 moles of He = 7.83×10²⁴ atoms
Thus,
52 u of He = 7.83×10²⁴ atoms
3. How to determine the number of atoms in 52 g of He4 g of He = 1 mole
Thus,
52 g of He = 52 / 4
52 g of He = 13 moles
From Avogadro's hypothesis,
1 mole of He = 6.02×10²³ atoms
Therefore,
13 moles of He = 13 × 6.02×10²³
13 moles of He = 7.83×10²⁴ atoms
Thus,
52 g of He = 7.83×10²⁴ atoms
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Someone plz help me ;-;
Answer:
the events of the story
Explanation:
hope this helps
What are the 2 characteristics of all matter
How does mercury negatively affect human health?
Answer:
The inhalation of mercury vapour can produce harmful effects on the nervous, digestive and immune systems, lungs and kidneys, and may be fata
Explanation:
A loud sound has a large
Answer:
This extra energy causes the string to vibrate more, which helps it move more air particles for a longer time. A string plucked with force has greater amplitude, and greater amplitude makes the sound louder when it reaches your ear. Volume depends on amplitude. Greater amplitude produces louder sounds.
what is called the quantity which can be measured ?federal
A unit of measurement is a definite magnitude of a quantity, defined and adopted by convention or by law, that is used as a standard for measurement of the same kind of quantity. Any other quantity of that kind can be expressed as a multiple of the unit of measurement. For example, a length is a physical quantity.
How does the formula of an element differ from that of a compound?
Answer: Most elements don't have formulas.
Explanation: They exist as single atoms, witn no bonds to another atom. A few element do exist as molecules, such as )2 and N2, but they are bonded to the same atom. There are no different elements.
1. What is Science?
A. The goal of science is to investigate and understand the natural world, to explain events in the natural
world, and to use those explanations to make useful predictions.
The neutrons affect the stability of the nucleus of the atom. True or False
Answer:
True.
Explanation:
This is because when the number of protons in the nucleus increases the neutrons needed for a stable nucleus increases even more rapidly.
Best of luck!!!
Why does magnesium chloride need to be molten in electrolysis
Answer:
this is from another brainliest answers.
Explanation:
Ionic compounds need to be molten or in solution for electrolysis to work. This is because the charged particles that make them up (ions) need to be free to move to the electrodes.
a molecule of an element is called what?
Answer:
a molecule of an element is called atomicity
Match the event with the type of change.
a. Making ice cubes from water
b. Making hot water for tea
c. Using dry ice to create a foggy punch bowl
а
<
1. Changes Between Liquids and Solids
2. Changes Between Liquids and Gases
3. Changes Between Solids and Gases
a
<
av
Answer:
A-1,
B-2,
C-3 is the answer of this queation
4. Write the electronic configuration of first 20 elements in the periodic table.
Hydrogen: 1
Helium: 2
Lithium: 2•1
Beryllium:2•2
Boron: 2•3
Carbon: 2•4
Nitrogen:2•5
Oxygen:2•6
Fluorine: 2•7
Neon:2•8
Sodium: 2•8•1
Magnesium: 2•8•2
Aluminium: 2•8•3
Silicon: 2•8•4
Phosphorus: 2•8•5
Sulfur: 2•8•6
Chlorine: 2•8•7
Argon: 2•8•8
Potassium: 2•8•8•1
Calcium: 2•8•8•2
Please give me brainliest, I spent a lot of time doing this
What are three properties of inertia?
How many moles of molecules and atoms are in 3.07g sample of SO3
Molecules____
Atoms_______
Answer:
ammonia molecules. Similar factors may be derived for any pair of substances in any chemical equation. Example 4.8. Moles of Reactant Required in a Reaction.
Explanation:
Employers may not fire or other wise discriminate against an employee who does which of the following
Answer:
race, religion, sex, if they are 40 or older, have a disability, pregnancy/childbirth. hope that helped
Which piece of glassware is cone shaped (rest of question on image)
Glasswares are glass containers and objects. An Erlenmeyer flask is a piece of glassware that is cone-shaped except for a cylinder-shaped opening. Thus, option B is correct.
What is Erlenmeyer flask?Erlenmeyer flask has been commonly called titration or conical flask used in the laboratory to titrate the solution in an experiment. It was named after Emil Erlenmeyer, a German chemist. They are used to heat, cool, mix, titrate, and incubate processes.
They have a distinct shape with a round flat bottom and a narrow neck region that allows swirling and mixing of the solution without any spills. Its narrow opening accommodates the filter funnel that can be used for filtration.
Therefore, option B. Erlenmeyer flask (conical flask) is cone-shaped glassware.
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7. In an atom, electrons revolve around the nucleus in their shell. The K shell can only accommodate 2 electrons while L shell can accommodate 8 electrons. Give
Now lets she s-subshell structure .
Take an element Berylium
[tex]\huge{\overset{1s^2}{\boxed{\uparrow\downarrow}}\overset{2s^2}{\boxed{\uparrow\downarrow}}}[/tex]
You can see the S-orbital has only space for 2electrons .
So K shell has 2electronsCome to p-orbital
Take an element Neon
[tex]\huge{\overset{1s^2}{\boxed{\uparrow\downarrow}}\overset{2s^2}{\boxed{\uparrow\downarrow}}\overset{2p^6}{\boxed{\uparrow\downarrow}\boxed{\uparrow\downarrow}\boxed{\uparrow\downarrow} }}[/tex]
The 2 means its L shell .
It has 8 electrons only and full filled .
Hence L shell can have only 8electronsScientists have cited gas emission as contributing to global [blank] , which is a general increase in temperatures worldwide.
Answer:
Warming
Explanation: Greenhose gases (CO2, CH4, etc.) trap heat in Earth's atmosphere since they absorb wavelenghts of light associated with heat.
what does it mean when a reaction has a negative amount of Kj
Answer:
heat is released in going from reactants to products
Explanation:
hope this helps
What is the number of nitrogen molecules in 6.0 moles of N2?
Explanation:
just take the given moles and multiply it with the ratio of molecules to moles to get your answer
The number of nitrogen molecules in 6.0 moles of N2 is = 3.6 × 10²⁴
How to calculate number of moleculesAvogadro's number( 6.02 × 10²³) is equal to the number of molecules in 1 mole of substance.
That is,
1 mole of N2 = 6.02 × 10²³
6 moles of N2 = 6 × 6.02 × 10²³
= 36.12 × 10²³
= 3.6 × 10²⁴
Therefore, the number of nitrogen molecules in 6.0 moles of N2 is = 3.6 × 10²⁴
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Help me with physical science
Answer:ok
Explanation:fish
what will happen to the atoms or molecules of a substance when it boils
Answer: It will change to gas
Explanation: It will change to gas because of evaporation. When the heat intensifies it will happen.
PLS I NEED HELP
The distance from the Sun to Mercury is 3.598 • 10^7
miles. The distance from the Sun to Neptune is
2.798. 10^9 miles. How far is Mercury from Neptune?
Write your answer in scientific notation.
Answer:
4.44309 × 109 ( 4443090000 kilometres )
2.760936126 × 109 ( 2760936126 miles)
Please make me the brainliest! !!
Answer:
The distance of Mercury to Neptune = The distance from sun to Neptune - The distance from sun to Mercury
= 2.798 . 10^9 - 3.598 . 10^7
= 2.798 . 10^9 - 0.03598 . 10^9
= 10^9 ( 2.798 - 0.03598 )
= 2.76202 . 10^9 miles
.
.
Hope it helps
You are given 2 balls that are made of the same material. They are also the same size and color. One is hollow and one is solid. Determine the physical property that could be used to identify the ball as a solid.
Group of answer choices
boiling point
solubility
pH
density
Answer:density
Explanation:
it’s how’s how dens the ball is
arlon drank 500 mL of softdrink which had a mass of 450 g.
a. 1.11 g/mL c. 0.9 g/mL
b. 50 g/mL d. 225000 g/mL
Answer:
0.9 g/mLExplanation:
The density of a substance can be found by using the formula
[tex]d = \frac{m}{v} \\ [/tex]
where
m is the mass
v is the volume of object
From the question we have
m = 450 g
v = 500 ml
[tex]d = \frac{450}{500} = \frac{9}{10} \\ = 0.9[/tex]
We have the final answer as
0.9 g/mLHope this helps you
Answer:
B) g/mL
Explanation:
Mass of Oxalic acid (solute) = 11g
Mass of Solution = 500ml
Density = 1.1 g/ml
We know that
Mass % of solute =
Massofsolution
Massofsolute×100
×
50
Mass of solution =
Volume of solution×
Density of solution
Mass of solution =
500×
1.1=
50×
11g
Mass % of the solute =
11×50
11×100
=
2%
100g of radioactive mass has a half life of 5 days. Calculate the mass decayed off after 15 days
Answer:
12.5 gm
Explanation:
15 days is three half lives
100 * (1/2)^3 = 12.5 grams
. Restate What is a physical change in terms
of particle arrangement?
Answer:
In physical changes no new materials are formed and the particles do not change apart from gaining or losing energy
Explanation:
A 147g piece of metal has a density of 7.00g/mL. A 50mL graduated cylinder contains 20.0mL of water. What is the final volume after the metal is added to the graduated cylinder
Answer: 41.0 ml
Explanation: (147g/7.00g/ml) = 21.0 ml for the metal
Add to 20.0ml to reach 41.0 ml to 3 sig figs
Please help it’s worth a lot!! I need the answer ASAP!!
Answer:
Show me the previous question so I can help
Use the information from the diagram to calculate the enthalpy of combustion for methane.
(IGNORE MY ANSWER PLZ I ACCIDENTALLY CLICKED IT)
SOMEBODY PLZ HELP ME I REALLY NEED IT PLZZZZZZZZ
Answer:
The answer is A) -604KJ
Explanation:
I just took the Penn Foster test. =D you welcome!
