There are 3 Na, 3 O, and 3 H since you distribute the coefficient 3 to all atoms. So, if you add them up, there are 9 atoms in that compound. Hope that helps!
In 40.32 kg of NaHCO₃, there are 2.890 × 10²⁶ formula units of NaHCO₃.
<h3>What is a formula unit?</h3>
A formula unit is the empirical formula of any ionic or covalent network solid compound used as an independent entity for stoichiometric calculations.
- Step 1: Convert 40.32 kg to g.
We will use the conversion factor 1 kg = 1000 g.
40.32 kg × (1000 g/1 kg) = 4.032 × 10⁴ g
- Step 2: Convert 4.032 × 10⁴ g to moles.
We will use the molar mass of NaHCO₃ as the conversion factor.
4.032 × 10⁴ g × (1 mol/84.01 g) = 479.9 mol
- Step 3: Convert 479.9 moles to formula units (fu).
We will use Avogadro's number as the conversion factor.
479.9 mol × (6.022 × 10²³ fu/1 mol) = 2.890 × 10²⁶ fu
In 40.32 kg of NaHCO₃, there are 2.890 × 10²⁶ formula units of NaHCO₃.
Learn more about formula units here: brainly.com/question/2165878
<h3>
Answer:</h3>
482.596 grams
<h3>
Explanation:</h3>
The relationship between moles, molar mass and mass of a compound is given by;
In this case;
The compound in question is P₂O₅
Molar mass of P₂O₅ = 141.94 g/mol
Rearranging the formula;
Mass = Moles × molar mass
Therefore;
Mass of P₂O₅ = 3.4 mol × 141.94 g/mol
= 482.596 grams
Therefore, mass of P₂O₅ is 482.596 grams
Answer: B!
Explanation: In the direction opposite of the direction of the applied force.There is no force in the other side being applied.
