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Bess [88]
3 years ago
14

As we grow older.

Chemistry
2 answers:
den301095 [7]3 years ago
7 0

Answer:

<u>C. We lose some of our ability to hear soft sounds</u>

Explanation:

  • As a person grows and matures his/her body requires more amounts of energy to maintain or sustain long enough. As the population grows old or ages what is called in the demographics as population aging, which is a fundamental phenomenon of how one sense slowly stops to respond to external stimulus.
  • Ability to hearing smelling tasting and touching all fade away with tie as man is not immortal neither his senses are, some people who have strong genetic makeup are considered superior to others while the rest of the population goes through the same phases of old age. While some may tend to ignore others.
  • Age is also considered to be a mental rather than a physical aspect.
qwelly [4]3 years ago
5 0

Answer:

I do believe it is A

Explanation:

As we grow older, our hearing system gets weaker causing our hearing to go off.

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Answer: The answer is 2.3 x 10 4's.

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3 years ago
Which two substances are covalent compounds? * C6H12O6(s) and KI(s) C6H12O6(s) and HCl(g) KI(s) and NaCl(s) NaCl(s) and HCl(g)
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Answer: Option (b) is the correct answer.

Explanation:

A covalent compound is defined as the compound in which sharing of electrons take place between the combining atoms. Generally, when two or more non-metals chemically combine together the it will lead to the formation of a covalent compound.

For example, C_{6}H_{12}O_{6} and HCl is also a covalent compound.

And, a compound in which transfer of electrons occur between the combining atoms is known as an ionic compound. Whenever, a metal chemically combines with a non-metal then it will always lead to the formation of an ionic compound.

For example, KI is an ionic compound.

Thus, we can conclude that C_{6}H_{12}O_{6} and HCl are the two substances which are covalent compounds.

7 0
3 years ago
1. What pressure would be exerted by 46.0grams of hydrogen gas placed into a 3.00 L container at
dlinn [17]

Answer:

187.34 atm

Explanation:

From the question,

PV = nRT.................. Equation 1

Where P = Pressure, V = Volume, n = number of mole, R = molar gas constant, T = Temperature.

make P the subject of the equation

P = nRT/V.............. Equation 2

n = mass(m)/molar mass(m')

n = m/m'............... Equation 3

Substitute equation 3 into equation 2

P = (m/m')RT/V............ Equation 4

Given: m = 46 g, T = 25°C = (25+273) = 298 K, V = 3.00 L

Constant: m' = 2 g/mol, R = 0.082 atmL/K.mol

Substitute these values into equation 4

P = (46/2)(0.082×298)/3

P = (23×0.082×298)/3

P = 187.34 atm

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