The number of moles of O atoms in 8.18 g of Ba(NO₃)₂ is 0.364 mol.
<h3>What is moles?</h3>
"The mole is a SI unit of measurement that is used to calculate the quantity of any substance." It is denoted by mol.
Given that the mass of Ba(NO₃)₂ is 8.18 g
n = m/M
n = moles = ? mol Ba(NO₃)₂
m = mass(g) = 8.18 gram(NO3)2
The molar mass of Ba(NO₃)₂ is 261. 35g/mol.
As given, the moles of oxygen atom in Ba(NO₃)₂ is 6.
So, the moles of oxygen in 8.18 gram will be
Putting the value in the formula:
0.0607 mol Mg(NO3)2 × 6 mol O atoms/mol Mg(NO3)2 = 0.364 mol O atoms to three significant figures.
Thus, the number of moles of O atoms is 0.364 mol.
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Answer:
0.08kg
Explanation:
Given parameters:
Temperature of water = 100°C
Quantity of heat released = 180414.08J
Unknown:
Quantity of water condensed = ?
Solution:
This is simple phase change process without any attendant change in temperature.
To solve this problem, use the formula below;
H = mL
H is the heat released
m is mass
L is the latent heat of condensation of water = 2260 kJ/kg
Insert the parameters and solve;
180,414.08 = m x 22.6 x 10⁵ J/kg
m = 
= 0.08kg
Explanation:
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Answer:
Matter is the term for any type of material. Matter is anything that has mass and takes up space. At a minimum, matter requires at least one subatomic particle, although most matter consists of atoms.
Some examples are: Water, books, pencils, sun, earth, moon, electron, proton, mesons, and quarks
