Balanced chemical reaction (dissociation) : CaCl₂(aq) → Ca²⁺(aq) + 2Cl⁻(aq).
n(CaCl₂) = 3,5 mol.
From chemical reaction: n(CaCl₂) : n(Ca²⁺) = 1 : 1.
n(Ca²⁺) = 3,5 mol.
From chemical reaction: n(CaCl₂) : n(Cl⁻) = 1 : 2.
n(Cl⁻) = 2 · 3,5 mol.
n(Cl⁻) = 7 mol.
Calcium chloride is salt that completely dissociate in water on calcium cations and chlorine anions.
Answer:
see below for explanation
Explanation:
1. you need to set up and balance the equation
NaOH + HC2H3O2 --> NaC2H3O2 + H2O
2. Write the value they gave you underneath the equation to figure out what we are solving for, which is the molarity of NaOH
<u>NaOH</u> (Base) + <u>HC2H3O2</u> (Acid)--> NaC2H3O2 + H2O
15.0 ml | 7.5ml
? M | 0.02M
3. Use the MaVa=MbVb ·
- This formula is saying the M of an acid times the volume of the acid = the M of the base times the volume of the base times the mol of the acid/ mol of the base ratio. ***You should always compute the volume in Liters.
- Convert your values (x is the molarity of the base, the unknown value) Our acid values are first because that is how the equation is set up
0.0075 · 0.02 = 0.0150 · x · 1/1
4. Simplify
0.00015 = 0.0150x
5. Solve
Molarity of the base = 0.01
Answer:
Absolute zero, technically known as zero kelvins, equals −273.15 degrees Celsius, or -459.67 Fahrenheit, and marks the spot on the thermometer where a system reaches its lowest possible energy, or thermal motion. There's a catch, though: absolute zero is impossible to reach.
Explanation:
FOR FISSION:
Answer:
A, B, D, E
Explanation:
These are the correct answers.
Answer:
Nitrogen is an inert gas — meaning it doesn't chemically react with other gases — and it isn't toxic. But breathing pure nitrogen is deadly. That's because the gas displaces oxygen in the lungs. Unconsciousness can occur within one or two breaths, according to the U.S. Chemical Safety and Hazard Investigation Board.