Answer:
1.1 × 10⁻⁶ M
Explanation:
Step 1: Given and required data
- Concentration of Ca²⁺ ([Ca²⁺]): 2.5 mM = 2.5 × 10⁻³ M
- Calcium oxalate solubility product constant (Ksp): 2.7 × 10⁻⁹
Step 2: Write the balanced equation for the solution reaction of calcium oxalate
CaC₂O₄(s) ⇄ Ca²⁺(aq) + C₂O₄²⁻(aq)
Step 3: Calculate the concentration of the oxalate ion to begin the precipitation of calcium oxalate
We will use the Ksp of calcium oxalate.
Ksp = 2.7 × 10⁻⁹ = [Ca²⁺].[C₂O₄²⁻]
[C₂O₄²⁻] = Ksp / [Ca²⁺]
[C₂O₄²⁻] = 2.7 × 10⁻⁹ / 2.5 × 10⁻³
[C₂O₄²⁻] = 1.1 × 10⁻⁶ M
The tire pressure is the sum of gauge pressure and the standard pressure of atmospheric pressure
We know that the standard air pressure of surrounding = 101.325 kPa
The given gauge pressure = 413 kPascal
So the tire pressure = 101.325 kPa + 413 = 514.325 K Pa
We can also convert the given pascals to atmosphere or Torr or mmHg or bar
Answer:
Lactose is found in animal milk is lactase is the enzyme that is required to digest it.
Explanation:
Lactose is a disaccharide made of glucose and galactose units. This sugar is naturally present in animal milk and it is digested (broken in its units) by the lactase enzyme.
Some people are lactose intolerant because their bodies is not able to produce the enzyme. If they ingest dairy products it may cause health issues. Nowadays it is possible to purchase the lactase enzyme and ingest it with a dairy food to avoid any health effects.
Answer:
Explanation:
I searched it up:
"The Heisenberg uncertainty principle states that the exact position and momentum of an electron cannot be simultaneously determined. This is because electrons simply don't have a definite position, and direction of motion, at the same time! ... We know the direction of motion."
Hope this helps :D