33.2 g of iron (Fe)
Explanation:
We have the following chemical reaction in which iron react with oxygen to form the iron (III) oxide:
4 Fe + 3 O₂ → 2 Fe₂O₃
number of moles = volume / 22.4 (L/mole)
number of moles of O₂ = 10 / 22.4
number of moles of O₂ = 0.446 moles
Taking in account the chemical reaction we devise the following reasoning:
if 4 moles of Fe react with 3 moles of O₂
then X moles of Fe react with 0.446 moles of O₂
X = (4 × 0.446) / 3 = 0.595 moles of Fe
number of moles = mass / molar weight
mass = number of moles × molar weight
mass of Fe = 0.595 × 55.8
mass of Fe = 33.2 g
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number of moles
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Answer:
A = 2
B = 1
Explanation:
The atomic number of lithium is 3.
Its atomic mass is 7 amu.
It is present in group group 1.
It has one valance electron.
Lithium is alkali metal it form salts.
It is silvery soft metal. It has lowest density as compared to all other metals.
It react vigorously with water.
It is used in rechargeable batteries which are used in camera, mobile, laptops etc.
The electronic configuration of Li:
Li₃ = 1s² 2s¹
Thus,
A = 2
B = 1
Answer: 18.65L
Explanation:
Given that,
Original volume of oxygen (V1) = 30.0L
Original temperature of oxygen (T1) = 200°C
[Convert temperature in Celsius to Kelvin by adding 273.
So, (200°C + 273 = 473K)]
New volume of oxygen V2 = ?
New temperature of oxygen T2 = 1°C
(1°C + 273 = 274K)
Since volume and temperature are given while pressure is held constant, apply the formula for Charle's law
V1/T1 = V2/T2
30.0L/473K = V2/294K
To get the value of V2, cross multiply
30.0L x 294K = 473K x V2
8820L•K = 473K•V2
Divide both sides by 473K
8820L•K / 473K = 473K•V2/473K
18.65L = V2
Thus, the new volume of oxygen is 18.65 liters.
Answer:
<h2>2.408 × 10²¹ is the correct answer!!</h2>
An ionic bond is a bond between a metal and non-metal
Considering that magnesium is a metal and chlorine is a non-metal an ionic bond will form.
