1st you need to find the mole ratio between KClO3 and O2. To find that you need to take the coefficents of each of the compounds. That gives a ratio of 2:3.
Now we find out how many each unit is:
2x = 12
x = 6
Now we multiply it by 3 to find the number of moles of O2
3(6) = 18 mol O2.
Answer:
Explanation:
1. Find the molar concentration
Assume that we have 100 mL solution.
Mass of NaCl = 0.90 g
2. Find the osmotic pressure
The formula for osmotic pressure (Π) is
Π = icRT
T = (37 + 273.15) K = 310.15 K
Answer:
D: Electron - Negative Charge
Explanation:
Protons have a positive charge, (pro = +)
Neutrons have a negative charge, (neutral = 0
Electrons have a negative charge.
An element is determent by the number of protons in the atom, the Isotope of an element is determined by the number of neutrons, and the charge of an atom is determined by its electrons, which is equal to the number of protons.
false all element when they are combined eachother thier valance number will change
the combination of oxygen and aluminum gives us Al2O3 see even the numbers are changing thank you if you have a comment you can write
Answer:
4.90 M
Explanation:
In case of titration , the following formula can be used -
M₁V₁ = M₂V₂
where ,
M₁ = concentration of acid ,
V₁ = volume of acid ,
M₂ = concentration of base,
V₂ = volume of base .
from , the question ,
M₁ = ? M
V₁ = 125.0 mL
M₂ = 4.56 M
V₂ = 134.1 mL
Using the above formula , the molarity of acid , can be calculated as ,
M₁V₁ = M₂V₂
Substituting the respective values ,
M₁ * 125.0 mL = 4.56 M * 134.1 mL
M₁ = 4.90 M
