Answer: The correct option is B.
Explanation: Ammonia which is used as a household cleaner, has an IUPAC name as nitrogen trioxide.
Symbol for Nitrogen = N
Symbol for Hydrogen = H
In ammonia, Number of nitrogen atoms are 3 and number of hydrogen atoms are 3.
The formula for ammonia becomes 
Therefore, the correct option is B.
Answer:
Because some of the symbols are from Latin
They are:
Mercury - Hg - Hydrargyrum
Potassium - K - Kalium
Silver - Ag - Argentum
Gold - Au - Aurum
Sodium - Na - Natrium
Tin - Sn - Stannum
Iron - Fe - Ferrum
Lead - Pb - Plumbum
Copper - Cu - Cuprum
Antimony - Sb - Stibium
Tungsten - W - Wolfram
Answer: ( C ) IBr3
Explanation: Iodine tribromide formula is IBr3
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Tides are the rise and fall of the oceans. They are caused by the gravity, or pull, of the Moon and Sun. The Moon's gravity is the main force in causing tides. It makes the oceans bulge out toward it. Another bulge occurs on the opposite side, because Earth is being pulled toward the Moon and away from the water. The water on the side farthest away from the Moon is least affected by its gravity.
Answer:
C.) The less dense the object, the faster the heat will transfer.
