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Lana71 [14]
4 years ago
12

The pressure at 99 feet below the surface of the ocean is: greater than the pressure at sea level greater than the pressure 33 f

eet below the surface about 59 pounds per square inch all of the above
Chemistry
2 answers:
jasenka [17]4 years ago
8 0

Answer:

All of the above

Explanation:

lina2011 [118]4 years ago
7 0

Answer:

All of the above

Explanation:

At the sea level the pressure that we experience is only due to the air that is surrounding us. This is atmospheric pressure and at the sea level it is nearly 14.5 pounds per square inch.

But, as we go down below the sea level, the pressure increases because an additional hydrostatic pressure starts to act upon our body. The deeper we dive the grater will be the pressure that we experience. For every dive of 33 feet, this pressure increases by about 14.5 pounds and goes on increasing as the depth increases.

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What is the final temperature when 625 grams of water at 75.0 C loses 7.96 x 10 to the fourth power J ? The specific heat of wat
IgorLugansk [536]

The final temperature : 44.5 °C

<h3>Further explanation</h3>

Heat can be formulated :

Q = m . c .Δt

Q = heat, J

m = mass, g

c = specific heat, J/gC

Δt= temperature

m= 625 g

Q=7.96 x 10⁴ J

c = 4.18 j/gC

t₁=75 C

\tt Q=m.c.\Delta t\\\\7.96\times 10^4=625\times 4.18\times (75-t_2)\\\\75-t_2=30.5\\\\t_2=44.5^oC

3 0
3 years ago
Covalent compounds are generally not very hard. Justify the statement.
Eduardwww [97]

Covalent compounds are generally not very hard because they are formed by two or more nonmetallic atoms.

<h3>COVALENT COMPOUNDS:</h3>

Covalent compounds are compounds whose constituent elements are joined together by covalent bonds.

Covalent bonding occurs when two or more nonmetallic atoms of an element share valence electrons. This means that covalent compounds will not be physically hard since they constitute non-metals.

Examples of covalent compounds are:

  1. H2 - hydrogen
  2. H2O - water
  3. HCl - hydrogen chloride
  4. CH4 - methane

Learn more about covalent compounds at: brainly.com/question/21505413

4 0
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Many factors would bring advantages when using fuel cells in cars but which factors present a drawback?
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Explanation:

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prohojiy [21]

Answer:

There are 0,89 moles of nitrous oxide gas  in the balloon.

Explanation:

We apply the formula of the ideal gases, we clear n (number of moles); we use the ideal gas constant R = 0.082 l atm / K mol:

PV= nRT ---> n= PV/RT

n= 1,09 atm x 20,0 L /0.082 l atm / K mol x 298 K

<em>n= 0,89212637 mol</em>

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Explanation:

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