Answer:
The correct option is the A
Explanation:
Like oxygen is more electronegative than hydrogen, it attracts electrons stronger than hydrogen. Therefore the two covalent bonds are polar.
The option b is incorrect because if oxygen and hydrogen had similar electronegativities, they would form no-polar bonds.
The option c is incorrect because oxygen is more electronegative than hydrogen (you can check that in a periodic table).
The options d and e are incorrect because the molecular size or hydrophilic don't influence the type bond.
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An acid and a base
For example
Sodium Hydroxide+Hydrochloric acid———Sodium chloride +Water
Answer:
0.50 g of Na Metal
Solution:
The equation for given reaction is as follow,
2 NaN₃ → 2 Na + 3 N₂
According to equation,
When,
67.2 L (3 mole) N₂ is produced along with = 46 g (2 mole) of Na Metal
So,
0.744 L N₂ produced will accompany = X g of Na Metal
Solving for X,
X = (0.744 L × 46 g) ÷ 67.2 L
X = 0.50 g of Na Metal
Answer;
A. letters to tuna companies
The use of dolphin-safe nets for catching tuna was started because of letters to tuna companies.
The use of dolphin-safe fishing methods was started because lots of dolphins were drowning in nets used to catch yellow fin tuna. The method was a new plan that the US had created in order to increase the tuna shortage that was happening in the country.