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Paul [167]
3 years ago
9

Calculate the molarity of glucose in a solution that which contains 35 g of glucose in 0.16 kg of phenol

Chemistry
1 answer:
sleet_krkn [62]3 years ago
5 0
C(Molarity) = n of solute/V of solution (mol/L)

glucose(C6H12O6) = 180g/mol
glucose 35g = 35g/(180g/mol) = 0.1944mol

We need density of solution here, and I assume it as density of phenol, 1.07g/mL. (I don't know why the question doesn't contain it)

phenol 0.16kg = 0.16kg/(1.07kg/L) = 0.1495L

0.1944mol/0.1495L = 1.300M(mol/L)
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Convert the density 2.32 g/mL to the unit kg/m3.
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1 ml= 1 cm³
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This rock is made up of the mineral calcite and it formed from the remains of organisms that lived in water. What type of rock i
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sedimentary rock

Explanation:

Sedimentary rocks are formed from pre-existing rocks or pieces of once-living organisms. And as you said "it formed from the remains of organisms that lived in water". And that makes it a sedimentary rock.

Hope this helped!

Have a supercalifragilisticexpialidocious day!

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What do we call the harmful substances that have a negative effect on the environment? *
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Oxygen has an atomic mass of 16 and an atomic number of 8. how many neutrons are present
Alex
<span>An atoms atomic mass is the sum of it's proton and neutrons found in the nucleus. An atom's atomic number is the number of protons an atom has. By subtracting an element's atomic number from the atomic mass you can calculate the number of neutrons. For oxygen it would be sixteen minus eight, so oxygen has eight neutrons.</span>
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An arctic weather balloon is filled with 34.1L of helium gas inside a prep shed. The temperature inside the shed is 5.°C. The b
mart [117]

Answer:

When the balloon is taken outside if the outside temperature is lower than the temperature inside the shed, the volume of the helium gas will decrease according to Charles' law. However, if the temperatureoutside is higher than inside the shed, the volume of the helium gas in the weather balloons will increase.

Note: The question is not complete. Assumptionshas been made about the temperature.

Explanation:

According to Charles' law of gases, the volume of a given mass of gas is directly proportional to its temperature in Kelvin provided its pressure remains constant.

Mathematically, V1T1 = V2T2

Given that the volume of the helium gas inside the weather balloon is 34.1 L at a temperature of 5 °C;

When the balloon is taken outside if the outside temperature is lower than the temperature inside the shed, the volume of the helium gas will decrease according to Charles' law. However, if the temperatureoutside is higher than inside the shed, the volume of the helium gas in the weather balloons will increase.

Assuming, the temperature outside the shed was 6.5 °C:

V1 = 34.1 L, T1 = 5.°C or 5.0 × 10^-10 °C = 273.1500000005

V2 = ?, T2 = 6.5 °C 6.5 × 10^-10 °C = 273.15000000065

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V2 = (34.1 × 273.1500000005) / 273.15000000065

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Due the very small increase in temperature, the volume of the balloon increases only very slightly that is increase that it is negligible.

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