Answer:
150 mL of the 30% alcohol mixture and 30 mL of the pure water will we need to obtain the desired solution.
Explanation:
Let the volume of 30% alcohol used to make the mixture = x L
For 25% alcohol:
C₁ = 25% , V₁ = 180 mL
For 30% alcohol :
C₂ = 30% , V₂ = x L
Using
C₁V₁ = C₂V₂
25×180 = 30×x
So,
x = 150 mL
Pure water = 180 mL - 150 mL = 30 mL
<u>150 mL of the 30% alcohol mixture and 30 mL of the pure water will we need to obtain the desired solution.</u>
Answer: OA is a balanced equation.
Explanation: For an equation to be balanced, the number of atoms and the total charge of each element in the reaction, of the product and reactant side must be the same.
Considering OA; 6 atoms of nitrogen is present in the reactant side. Shifting to the product side, 6 atoms of nitrogen is also present. Taking the other element in the reaction into account, the number of atoms of each element balances on both sides.
It's hydroxide ions because acids contain hydrogen ions
C) gas particles move rapidly but they collide with each other as well as on the wall of the container
Gravity is pulling the skydiver down therefore gravitational force
