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>
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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:A.) Mechanical and nuclear
Explanation:
iv,e got nuthing sorry im only a kid i have to leared that yet
Answer: 20L of H2O
Explanation:
C3H8 + 5O2 → 3CO2 + 4H2O
Recall 1mole of a gas contains 22.4L at stp
5moles of O2 contains = 5 x 22.4 = 112L
4moles of H2O contains = 4 x 22.4 = 89.6L
From the equation,
112L of O2 produced 89.6L H2O
There for 25L of O2 will produce XL of H2O i.e
XL of H2O = (25 x 89.6)/112 = 20L
For #1, I'd say it's "It will usually bond to multiple atoms which can provide a total of 4 additional electrons."
2. Ionic (I'm quite certain because anions/cations (-1 & +1) are Ionic from what I recall, if that's true it's Ionic.
3. "comparison of the associated families to which the elements belong" and
"the difference in electronegativities" are what I would choose, as I mentioned in a comment earlier.
If I'm wrong let me know, but I am at least 80% sure that these responses are correct from what I remember in Chemistry.
