Explanation:
3Mg(s) + N2(g) = Mg3N2(s)
First check that the equation is balanced. In this case, it is.
Assuming that magnesium is the limiting reactant:
First find the molecular weight using the Periodic Table.We find that the atomic mass of magnesium is approximately
24.3g, so the molecular weight is just 24.3g\mol
2. Next we need the mole to mole ratio. As there are 3
magnesiums for 1 magnesium nitride (shown by the coefficients), the
mole to mole ratio is 1 mol Mg3N2\3 mol Mg.
3. We need the amount of the substance, in grams. Since you have not
stated it in the question, I'll just do 10g AS AN EXAMPLE. Note that
depending on the amount, the LIMITING REAGENT MAY DIFFER.
4. Finally, we need the molecular weight of Mg3N2, which we can easily
calculate to be around 100.9\mol.
5. Putting this all together, we have 10gMg⋅ (mol Mg\24.3gMg)
(1mol Mg3N2\ 3mol Mg) (100.9g Mg3N2\mol Mg3N2)
the units will cancel to leave gMg3N2 (grams of magnesium nitride):
10gMg ⋅ (mol Mg\24.3gMg) (1mol Mg3N2\3mol Mg)
(100.9g Mg3N2\mol Mg3N2)
Doing the calculation yields approximately 13.84g.
Assuming that nitrogen is the limiting reactant:
Similarly, following the above steps but with 10g of nitrogen yields 36.04g
In conclusion, as we produce less amount of Mg3N2 when we assumed that Mg was the limiting reagent, magnesium is the limiting reagent and nitrogen is the excess.
Note: This is in THIS CASE, where we have 10g of both. The answer may vary depending on the amount of each substance.
Answer:
1.46×10^25 molecules
Explanation:
Each mole of N₂ reacts with 3 moles of Mg to form 1 mole of Mg₃N₂. That is, the number of moles of product is equal to the number of moles of nitrogen gas when excess magnesium is present.
There are 6.022×10²³ molecules in each mole of a substance, so the number of molecules of Mg₃N₂ is
(24.3 mol)(6.022×10²³ molecules/mol) = 1.46×10²⁵ molecules
Li²O, # of Elements and Atoms
Answer:Lithium atomic orbital and chemical bonding information. There are also tutorials on the first thirty-six elements of the periodic table includes: Li²O
16.
Magnesium reacts with hydrochloric acid according to the equation below.
Magnesium bertindak balas dengan asid hidroklorik mengikut persamaan berikut.
Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g)
What is the volume of hydrogen gas produced at room condition if 0.6 g of
magnesium is added to the excess of sulphuric acid?
[Relative atomic mass : Mg = 24 : molar volume = 24 dmº mol' at room condition]
Berapakah isipadu gas hidrogen yang dihasilkan pada keadaan bilik jika 0.6 g
magnesium ditambahkan kepada asid hidroklorik berlebihan."
[Jisim atom relative:Mg = 24 : isipadu molar = 24 dm mol! pada keadaan bilik]
A 0.6 cm
B 6.0 cm
C 60.0 cm
D 600 cm
The crack shown in the lithosphere was created by the movement of two or more tectonic plates. What is this crack called
Answer:
The lithosphere is made up of pieces of tectonic plates. These plates are constantly changing and move towards the mantle. Non-stop movement of tectonic plates causes stress on the earth's outermost layer i.e,the crust. When these stresses extends it leads to cause cracks called faults.
Explanation:
Explain cell division in multicellular organisms?
Answer:
the divide through osmosis of mitosis or sum
Explanation:
Answer:
In multicellular organisms, cell division aids in the formation of gametes, which are cells that combine with others to form sexually produced offspring. For growth to occur in living organisms, the number of cells have to increase through cell division until it reaches its maximum size. The human body also repairs injuries by means of cell division.
I hope this answer helps you find your answer! Have a great day! :)
What is an orbital? How does it differ from an orbit?
Answer:
An orbit is the simple planar representation of an electron. An orbital refers to the dimensional motion of an electron around the nucleus in a three-dimensional motion. An orbital can simply be defined as space or the region where the electron is likely to be found the most.
Explanation:
Answer:
An orbital on the other hand is simply the probable area where one can expect to find the maximum density of electron presence within an atom. An orbit on the other hand is simply present in a body with a certain mass, while an orbital exists for an electron as well as an atom.
Thus, these are the simple differences between Orbit and Orbitals. It is important to know the major differences, you can check out the differences between Orbit and Orbitals below:
Differences between Orbit and Orbitals
Orbit Orbitals
An orbit is the simple planar representation of an electron. An orbital refers to the dimensional motion of an electron around the nucleus in a three-dimensional motion.
It can be simply defined as the path that gets established in a circular motion by revolving the electron around the nucleus An orbital can simply be defined as the space or the region where the electron is likely to be found the most.
The shape of molecules cannot be explained by an orbit as they are non-directional by nature. The shapes of the molecules can be found out as they are directional by nature.
An orbit that is well-defined goes against the Heisenberg principle. An ideal orbital agrees with the theory of Heisenberg’s Principles.
Thus, these are the major differences between Orbit and Orbitals.
What did most of the particles that Rutherford shot at the gold foil do? What was the surprising behavior of a few of the particles? What did he determine?
Answer:
Explanation:
Rutherford gold experiment gave the explanation to some observations made on atoms.
When he shot the gold foil, most of the [tex]\alpha[/tex]-particles passes through the foil undeflected nor absorbed. This faction of the particles propagated the foil as if there was nothing placed on their path.
The surprising behavior of a few of the [tex]\alpha[/tex]-particles was that they were deflected from their initial path on hitting the gold foil.
This implies that there is a part of the gold foil which has the same charge as the [tex]\alpha[/tex]-particles, and more massive than the particles. Thus, he was able to determine the nucleus of an atom.
What is Mg(HSO3)2????
Answer:
Mg(HSO3)2 is Magnesium bicarbonate.
Answer:
Mg(HSO3)2: Magnesium Hydrogen Sulfite
Explanation:
7 Ba(ClO3)2
How many oxygen atoms are shown?
PET plastic # 1 is used in water bottles and pop bottles. Why should they be recycled but not be reused?
They should be recycled but not reused because the "repeated use increases the risk of leaching and bacterial growth." Also, recycling PET plastic "results in reduced energy consumption, lower cost, and reduced environmental impact."
Please help me, Thank you!
Answer:
B. Opposite
Explanation:
When one electron is transferred from sodium to chlorine, a pair of ions with oppositely charged ions is formed.
The electrostatic attraction between the ions forms a covalent bond between them.
When atoms lose or gain electrons, they become ions due to the charge imbalance within them. If sodium lose an electron, it becomes positively charged. when the electron is gained by chlorine, it becomes negatively charged These oppositely charged ions combined to form the ionic compound.Magnetic Quantum Number tells you what? how many orbitals are in s, p ,d?
What type of energy is caused by positive and negative charges in matter
Answer:
Static electricity is the result of an imbalance between negative and positive charges in an object. These charges can build up on the surface of an object until they find a way to be released or discharged.
Explanation:
12. Draw the lewis structure for the element to help you answer the question *
Answer:hope it helps
Explanation:
5.0g of copper is heated from 20 Celsius to 80 Celsius. How much energy it was used to heat Cu? (Specific heat capacity of Cu is 0.092 cal/g)
Answer:
the energy used to heat Cu is 27.6 Cal
Explanation:
given data
mass m = 5 g
Specific heat capacity of Cu = 0.092 cal/g
temperature T2 = 80 Celsius
temperature T1 = 20 Celsius
solution
we get here energy used to heat Cu that is express as
Q = m × c × ΔT ....................1
so here m = mass and c = specific heat capacity
and ΔT = T2 - T1
so put value in eq 1
Q = 5 × 0.092 × (80 - 20)
Q = 27.6 Cal
so that the energy used to heat Cu is 27.6 Cal
calculate the percentage by mass of oxygen in ammonium nitrate
Answer:
Percent composition of O is 48g80g×100%=60%
What does percent composition tell you about a substance?
O
A. It gives you the molecular formula of the substance,
B. It tells you what the substance is made of
O C. It gives you the total mass of the substance,
OD. It tells you how many moles are in the substance,
Answer:
Percent composition tells you which types of atoms (elements) are present in a molecule and their levels. Percent composition can also tell you about the different elements present in an ionic compound as well.ion:
Answer:
Explanation:hey
4 Which form of energy is stored in this
container?
(F) chemical energy
o electrical energy
(I kinetic energy
I sound energy
Answer: (F) chemical energy
Explanation:
Explain why no experiment is a failure.
Answer:
No experiment is a failure, because anytime you mess up, you learn from your mistakes and when you try the experiment again you can fix what you messed up on last time.
A solution containing aluminium ions forms a white precipitate when a few drops of dilute sodium hydroxide solution are added to it. For example, sodium hydroxide solution reacts with aluminium sulfate solution. Sodium sulfate solution and solid aluminium hydroxide form. a Write a word equation for this reaction.
Answer:
See explanation
Explanation:
A word equation tries to depict a chemical reaction in words. Letters rather than only chemical formulas are used to show the reaction equation.
Now we want to write a word equation that shows the reaction of sodium hydroxide solution and aluminium sulphate solution:
Alumunium sulphate + sodium hydroxide ------>Aluminium hydroxide + sodium sulphate
I JUST NEED HELP!!!! ASAP!!!!
Hydrogen cyanide has the chemical formula HCN. What's the formal charge on the N atom?
A)
+2
B)
0
C)
–2
D)
–1
Answer:
Formal charge = valance electron - nonbonding electron - (1/2)bonded electron
For nitrogen atom,
Formal charge = 5 - 2 - (1/2)×6
= 5-2-3
= 0
So, the formal charge on nitrogen atom in HCN is "0".
Explanation:
The formal charge on the N atom of hydrogen cyanide, HCN molecule is 0. Option B is correct.
Formal charge is defined as the individual charge of an atom. It is represented as:
Formal charge = valance electron - nonbonding electron - (1/2)bonded electron
The valence electrons in nitrogen atom is 5, there are 2 non bonding electrons and 6 bonded electrons on N atom in HCN,
Thus, For Hydrogen cyanide molecule, the formal charge on nitrogen atom is calculated as:
Formal charge
= 5 - 2 - (1/2)×6
= 5-2-3
= 0
So, the formal charge on nitrogen atom in HCN is "0".
To know more about formal charge here
https://brainly.com/question/2081051
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need help with physical changes
Answer:
I give u three in explanation
Explanation:
Crushing the can, stomping on the can, and squishing the can
GUYSS JUST ONE QUESTION PLEASE HELPPP!!!!!!
Explanation:
done
..................
Additional Practice Questions
5. If you had a pH of 4.30 in a 5.00 L sample, how many
moles of hydronium do you have?
Moles of hydronium (H₃O⁺) : 2.5 x 10⁻⁴
Further explanationGiven
pH = 4.3
V sample = 5 L
Required
moles of H₃O⁺(hydronium)
Solution
pH = - log [H₃O⁺]
4.3 = - log [H₃O⁺]
[tex]\tt [H_3O^+]=10^{-4.3}~M=10^{-4.3}mol/L[/tex]
Moles of hydronium for 5 L sample :
[tex]\tt 5~L\times 10^{-4.3}mol/L=5.10^{-4.3}moles=2.5\times 10^{-4}~moles[/tex]
18. How far does Larry move if traveling at 2m/s for 100s?
Answer:
200 m
Explanation:
Given data:
Speed of larry = 2 m/s
Time taken = 100 s
Distance travelled = ?
Solution:
Formula:
d = st
d = distance
s = speed
t = time
by putting values,
d = 2 m/s× 100 s
d = 200 m
2H2 + O2 2H2O
How many moles of water can be produced if 8 moles He are used?
a.2
b.4
c.8
d.16
Answer:
c ) 8
Explanation:
Given data:
Number of moles of water produced = ?
Moles of hydrogen react = 8 mol
Solution:
Chemical equation:
2H₂ + O₂ → 2H₂O
Now we will compare the moles of hydrogen and water.
H₂ : H₂O
2 : 2
8 : 8
Thus, 8 moles of water will produced.
what is the mass of of 3.20 X 10^23 particles of Co2?
Answer:
Mass = 23.36 g
Explanation:
Given data:
Number of particles of CO₂ = 3.20 ×10²³
Mass of CO₂ = ?
Solution:
1 mole contain 6.022×`10²³ particles,
3.20 ×10²³ particles × 1 mol / 6.022×`10²³ particles
0.531 mol
Mass of CO₂:
Mass = number of moles × molar mass
Molar mass = 44 g/mol
Mass = 0.531 mol× 44 g/mol
Mass = 23.36 g
Plzzzzz helppppp it’s due already I’ll mark Brainly
the boiling point of isopropyl alcohol is 82.5°C. a student conducts an experiment and finds a boiling point of 83.1°C. what is the students percent error in this experiment?
A.0.6%
B. 0.7%
C. 1.0%
D. 99.3%
Answer:
B. 0.7%
Explanation:
Given data:
Actual boiling point = 82.5°C
Experimental boiling point = 83.1°C
Percent error = ?
Solution:
Formula:
Percent error = ( actual value - experimental value / actual value )×100
by putting values,
Percent error = (82.5°C - 83.1 °C /82.5°C) × 100
Percent error = 0.007 × 100
Percent error = 0.7 %
Negative sign shows that experimental value is greater than accepted value. It can not written in result.
what evidence is there of energy release after chemical reaction
Answer:
loss of mass
Explanation:
your welcome :)
What happen when? sodium oxide reacts with HCL
Answer:
Sodium oxide reacts exothermically with cold water to produce sodium hydroxide solution. A concentrated solution of sodium oxide in water will have pH 14. ... For example, it reacts with dilute hydrochloric acid to produce sodium chloride solution.