Answer:
359.3g of Na₂CO₃ are required
Explanation:
When sodium carbonate, Na₂CO₃ reacts with HCl, NaCl and H₂O are produced as follows:
Na₂CO₃ + 2HCl → 2NaCl + CO₂ + H₂O
<em>Where 1 mole of sodium carbonate produce 2 moles of NaCl</em>
<em />
To solve this question, we must find the moles of sodium carbonate required to produce the 6.78 moles of NaCl. With this mass and the molar mass we can find the mass of sodium carbonate as follows:
<em>Moles Na₂CO₃:</em>
6.78 moles NaCl * (1mol Na₂CO₃ / 2mol NaCl) = 3.39 moles Na₂CO₃
<em>Mass Na₂CO₃ -Molar mass: 105.99g/mol:</em>
3.39 moles Na₂CO₃ * (105.99g / mol) =
<h3>359.3g of Na₂CO₃ are required</h3>
Answer:
i is d " The carbons on either side of the double bond are pointed in the
same direction."Explanation:
Answer:
polar covalent bonds
Explanation:
Phosphorus trichloride is a chemical compound of phosphorus and chlorine, having the chemical formula PCl 3. It has a trigonal pyramidal shape, owing to the lone pairs of electrons on the phosphorus atom.
Chlorine is more elctronegative than phosphorus . Phosphorus has a lone pair of electrons and every chlorine atom has three pairs of electrons . The molecule is not symmetrical as the shared electron pairs are closer to the chlorine atoms than the phosphorus atoms , the chlorine atoms are shifted towards one side of the center of the molecule , thus a net dipole effect is created. This is the reason why the molecule is polar .
