Explanation:
balance the equation ...HCl,Ba(OH) and BaCl2 are aqueous
know groups of the elements H 1+ ,Cl -,Ba 2+,OH-
write complete ionic eqution and eliminate spectator ions those appearing on both sides Cl and Ba
Answer:
A cation that has a smaller radius than the atom.
Explanation: when electrons are removed from the outermost shell of a calcium atom, the atom becomes a cation that has a smaller radius than the atom.
Answer: 0.30 M
Explanation:
According to the neutralization law,
where,
= molarity of solution = ?
= volume of solution = 24.6 ml
= molarity of solution = 0.222 M
= volume of solution = 33.0 ml
= valency of = 21
= valency of = 1
Therefore, the molarity of the HCI solution is 0.30 M
<h3>
Answer:</h3>
7.51 × 10²² atoms S
<h3>
General Formulas and Concepts:</h3>
<u>Math</u>
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
<u>Chemistry</u>
<u>Atomic Structure</u>
- Reading a Periodic Table
- Using Dimensional Analysis
- Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.
<h3>
Explanation:</h3>
<u>Step 1: Define</u>
4.00 g S
<u>Step 2: Identify Conversions</u>
Avogadro's Number
Molar Mass of S - 32.07 g/mol
<u>Step 3: Convert</u>
- Set up:
- Multiply:
<u>Step 4: Check</u>
<em>Follow sig figs and round. We are given 3 sig figs.</em>
7.51107 × 10²² atoms S ≈ 7.51 × 10²² atoms S
Answer:
Distillation. Methanol boils at a lower temp (~70 C), so the methanol vapor will need to be condensed to a liquid again. A high reflux ratio would yield a purer methanol. Advantages: good separation due to difference in boiling points.
Explanation: