Molar mass arsenic = 74.92 g/mol
1 mole ---------- 74.92 g
? mole ----------- 1.90 g
moles = 1.90 * 1 / 74.92
= 0.02536 moles of arsenic
hope this helps!
Answer:
5
Explanation:
Sorry, don't have one
<u><em>Hope this helps and I get brainliest <3</em></u>
Answer and Explanation:
(a) MONATOMIC CATION: Monatomic cation are those cation in which only one atom is present
Example :
(b) MONATOMIC ANION : Monatomic anion are those cation in which only one atom is present
Example :
(C) Polyatomic Cation : Polyatomic cations are those cation which contains more than one atom
Example :
(C) Polyatomic Anion : Polyatomic anions are those cation which contains more than one atom
Example :
1. 1mL
2. 2mL
3. 0.2mL
4. 0.5mL
Answer:
50 g NaOH
General Formulas and Concepts:
<u>Chemistry - Solutions</u>
- Reading a Periodic Table
- Using Dimensional Analysis
- Molarity = moles of solute / liters of solution
Explanation:
<u>Step 1: Define</u>
0.500 L
2.50 M NaOH
x moles of solute
<u>Step 2: Define conversions</u>
Molar Mass of Na - 22.99 g/mol
Molar Mass of O - 16.00 g/mol
Molar Mass of H - 1.01 g/mol
Molar Mass of NaOH - 22.99 + 16.00 + 1.01 = 40 g/mol
<u>Step 3: Find moles of solute</u>
2.50 M NaOH = x moles NaOH / 0.500 L
x = 1.25 moles NaOH
<u>Step 4: Convert</u>
<u /> = 50 g NaOH
<u>Step 5: Check</u>
<em>We are given 3 sig figs. Since our final answer has 2 sigs, there is no need to round.</em>