Which of the following facts about the ocean water indicates that the ocean is a major resource of nutrients?

The strength of a covalent bond depends upon the size of the atoms and the bond order. In general short bonds are strong bonds.1

Oksana_A [137]

Answer:

Bond energy of (A) C≡C > (B) C=C

and, (C) C=N > (D) C-N

Explanation:

Bond energy refers to the amount of energy required to break a bond or the energy released when a bond is formed. Bond energy of a covalent bond suggests the bond strength of the chemical bond and depends on the bond length and bond order of the chemical bond.

The bond energy of a chemical bond increases with the bond order and decreases with the bond length. As, length of a bond decreases with increase in the bond order.

First pair: (A) C≡C (B) C=C

The bond order of C≡C - 3, the bond order of C=C - 2

Since the bond order: C≡C > C=C

Bond length: C≡C < C=C

Therefore, bond energy of (A) C≡C > (B) C=C

Second pair: (C) C=N (D) C-N

The bond order of C=N - 2, the bond order of C-N - 1

Since the bond order: C=N > C-N

Bond length: C=N < C-N

Therefore, bond energy of (C) C=N > (D) C-N

8 0

3 years ago

2Na(s) + Cl2(g) → 2NaCl(s)

alekssr [168]

Answer: 2!

Explanation:

8 0

3 years ago

An experiment was conducted to see which metal pot would be better for cooking food quickly. The table below shows how quickly s

LenaWriter [7]

Answer:

The term conclusion best illustrates the given statement.

Explanation:

Conclusion refers to a decision or judgment that can be acquired by reasoning. From the observation mentioned in the given table:

1. The steel, aluminum, and bronze took 27, 45 and 80 seconds to dissolve small section of wax, this signifies that more time will be needed by them to transfer heat to the food while cooking. Thus, food will take more time to cook in them.

2. Copper consumed less time, that is, 15 seconds to melt the section of wax than the other metal pots, which signifies that it is a good conductor of heat than the others. Thus, the copper pot would be good for cooking food briskly.

After evaluating the results and observations in an experiment, the conclusion was made that pots made of copper are best for cooking foods.

4 0

3 years ago

Which branch of chemistry studies the composition of substances

emmainna [20.7K]

Analytical

Analytical chemistry seeks to determine the composition of substances.

8 0

3 years ago

HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP

Brilliant_brown [7]

Answer: Its the 2nd one

Explanation: A straight horizontal line on a speed-time graph means that speed is constant. It is not changing over time. A straight line does not mean that the object is not moving! This graph shows increasing speed.

5 0

3 years ago