Answer:
130 μL
Explanation:
The dilution formula is used to calculate the volume V₁ required:
C₁V₁ = C₂V₂
V₁ = (C₂V₂)/C₁ = (2.00L)(0.001M)/(15.0M) = 1.3 x 10⁻⁴ L or 130 μL
(1.3 x 10⁻⁴ L)(10⁶ μL/L) = 130 μL
Answer:
b the heavier ball has more kinetic energy than the lighter ball because it has more mass
Answer:
16875 J
Explanation:
KINETIC ENERGY EQUATION = <em> </em><em>1/2 m v^2</em>
= 1/2 times mass times velocity of metres per second^2 (speed)
= 1/2 times 150 times by 15^2
= 16875 J (joules)
Answer:
0.852 mol
Explanation:
First we <u>convert 4.00 g of helium (He) into moles</u>, using its <em>molar mass</em>:
4.00 g ÷ 2 g/mol = 2 mol He
To answer this problem we can use<em> Avogadro's law</em>, which states that at constant pressure and temperature:
V₁n₂=V₂n₁
Where:
We <u>input the data</u>:
- 24.4 L * n₂ = 10.4 L * 2 mol
And <u>solve for n₂</u>:
