How many moles of magnesium is 3.01 x 10^22 atoms of magnesium?
Answers
Moles are the base unit of atoms, molecules, ions, or any other substance. It is exactly 6.022 × 10²³ entities of any substance. The mole is equal to the ratio of the given mass to the molar mass.
Given that:
Magnesium atoms =
1 mole of a substance =
Now, calculating the moles of magnesium in the given entity:
Mole =
Mole = 0.05 moles.
Thus, the moles are defined as the base unit of any substance. It was discovered by the scientist Avogadro and is also known as Avogadro's number ().
Therefore, the mole in atoms of Magnesium will be 0.05.
To know more about moles, refer to the following link:
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Which statement best applies collision theory to preventing a dangerous reaction from occurring? Store the reactants together at a low pressure. Keep all sparks or flames away from the reactants. Store the reactants together at a low temperature. Keep the reactants in separate containers.
When was tin discovered tin is an element please help 75 pts
(B) centrifuging the solution
(C) osmosis of the solution
(D) electrolysis of the solution
(E) filtration of the solution
Answers
(2) geothermal energy (4) nuclear energy
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A voltaic cell is an electrochemical cell that generates electricity through redox reactions.
pressure. What is the molecular formula of the gas
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Answer:
C
Explanation:
4× CH2 = C4H8
Answers
HBr
MgO
CO2
Answers
Answer:
CO2
Explanation:
A covalent compound is a compound between 2 nonmetals. For this reason, NaCl and MgO can be eliminated since both contain metals. While neither H nor Br are metals, in HBr H is acting as a metal. CO2 is the only choice containing both nonmetals, with both elements acting like nonmetals as well.
(2) second electron shell
(3) third electron shell
(4) fourth electron shell
Answers
According to the electronic configuration, a calcium atom in the ground state electrons which possess least amount of energy are located in first shell.
What is electronic configuration?
Electronic configuration is defined as the distribution of electrons which are present in an atom or molecule in atomic or molecular orbitals.It describes how each electron moves independently in an orbital.
Knowledge of electronic configuration is necessary for understanding the structure of periodic table.It helps in understanding the chemical properties of elements.
Elements undergo chemical reactions in order to achieve stability. Main group elements obey the octet rule in their electronic configuration while the transition elements follow the 18 electron rule. Noble elementshave valence shell complete in ground state and hence are said to be stable.
According to the electronic configuration,as the number of shells increases their energy also increases .Hence, electrons in first shell have least energy.
Learn more about electronic configuration,here:
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Answer:
1
Explanation:
first electron shell.
First electron shell possesses the least amount of energy at the core.
Hope this helps.