A chemist reacted 0.05 moles of solid sodium with water to form sodium hydroxide solution. The chemical reaction for this is: Na+H2O = NaOH +H2
What mass of sodium was reacted?

Question

HIX Tutor · Accepted Answer

undefined To find the mass of sodium reacted, follow these steps:

1. **Know the molar mass of sodium (Na)**:
   - Sodium has a molar mass of about 23 grams per mole.

2. **Use the number of moles**:
   - You have 0.05 moles of sodium.

3. **Calculate the mass**:
   - Use the formula: 
     $$
     \text{Mass} = \text{Moles} \times \text{Molar mass}
     $$
   - So, 
     $$
     \text{Mass} = 0.05 \, \text{moles} \times 23 \, \text{g/mole}
     $$

4. **Do the math**:
   - $0.05 \times 23 = 1.15$ grams.

So, the mass of sodium reacted is **1.15 grams**.

Olivia Anton · Answer

Got a Periodic Table........?

#Na(s) + H_2O(l) rarr NaOH(aq) + 1/2H_2(g)uarr# Sodium has an atomic mass of #22.99*g*mol^-1#. How do I know this? Well, for a start it is printed on the Periodic Table, a copy of which will be made available in every examination of chemistry and physics you sit........ And so we take the (dimensional) product.......... #22.99*g*cancel(mol^-1)xx0.05*cancel(mol)=??*g#, a bit over one gram........... Typically, questions like these would also ask you to calculate the volume of dihydrogen gas evolved ......... Can you make this assessment?

Cooper Adams · Answer

undefined To find the mass of sodium reacted, you can use the stoichiometry of the reaction. Since 1 mole of sodium reacts with 1 mole of water to produce 1 mole of sodium hydroxide, the molar ratio between sodium and water is 1:1. Therefore, if 0.05 moles of sodium were reacted, the mass of sodium can be calculated using its molar mass, which is approximately 22.99 grams per mole.

Mass of sodium = Number of moles of sodium * Molar mass of sodium
Mass of sodium = 0.05 moles * 22.99 g/mol
Mass of sodium ≈ 1.15 grams

So, the mass of sodium reacted is approximately 1.15 grams.

A chemist reacted 0.05 moles of solid sodium with water to form sodium hydroxide solution. The chemical reaction for this is: Na+H2O = NaOH +H2 What mass of sodium was reacted?