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hjlf
2 years ago
10

Anyone can help me in science assignment

Chemistry
2 answers:
olya-2409 [2.1K]2 years ago
6 0

Answer:

okay I will help you

Explanation:

okay

natima [27]2 years ago
5 0

Answer:

question?

Explanation:

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What is the molarity of a solution containing 8.0 moles of solute in 120mL of solution?
Nataliya [291]
Answer:
200/3 M which is approximately equal to 66.6667 M

Explanation:
Molarity is defined as the number of moles of solute per liter of solution.

It can be calculated as follows:
molarity =  \frac{number of moles of solute}{liters of solution}

We are given that:
number of moles of solute = 8 moles
volume of solution = 120 ml = 0.12 liters

Substitute with the givens in the above equation to get the molarity as follows:
molarity = \frac{8}{0.12} =  \frac{200}{3} = 66.6667 M

Hope this helps :)
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3 years ago
If a bonding pair of electrons is unequally shared between two atoms, the bond is
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Sodium metal is sometimes used as a cooling agent in heat exchange units because of its relatively high molar heat capacity of 2
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Answer:

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Explanation:

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28,2 \frac{J}{mol C} x \frac{1mol}{23g} = 1,23 J/g C

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If kinetic energy increases does pressure decrease?
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If molecules are in a closed container then we expect the pressure to increase as the kinetic energy increases. This is because the atoms of an element collide with the walls of the container and increase the pressure.

If we use the formula PV=nRT, where P is the pressure, V is the volume, n is the number of moles, R the ideal gas constant and T is the temperature.  According to the formula, P is directly proportional to temperature. An increase in temperature leads to an increase in pressure.

Since we know that temperature is the average kinetic energy of molecules present. It means as we increase the temperature we increase the kinetic energy of the molecules which in turn leads to an increase in the pressure.

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The modern periodic table is organized by increasing ______________ ___________.
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atomic number.

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