Answer:
Explanation:
From the 1 g sample you have:
0.546 grams of cobalt chloride
1-0.546=0.454 grams of water
Now:
1) The salt
Of the 0.546 g, 0.248 g are cobalt (Mr=58.9) and the rest id Cl (Mr=35.45):


Dividing:

So the molecular formula will be:

2) The water
The water's molecular weight is M=18 :

Bonding with the Co:

The complete formula of the hydrate:

Answer:
Percent yield = 82.5
Explanation:
Given data:
Actual yield of N₂ = 275 L
Theoretical yield = 333 L
Percent yield = ?
Solution:
Chemical equation:
4HCl + 6NO → 5N₂ + 6H₂O
Percent yield:
Percent yield = actual yield / theoretical yield × 100
Percent yield = (275 L/ 333 L ) × 100
Percent yield = 0.825× 100
Percent yield = 82.5%
Answer:
yes
Explanation:
oak trees don't have vertebrates
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