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Anettt [7]
4 years ago
5

Why do you think properties of materials used would be considered a constraint?

Chemistry
1 answer:
Rina8888 [55]4 years ago
7 0

Answer:

For a material to be considered as building material, it should have required engineering properties suitable for construction works. These properties of building materials are responsible for its quality and capacity and helps to decide applications of these material. Such properties of building materials are categorized as follows. 1. Physical properties 2. Mechanical properties 3. Chemical properties 4. Electrical properties 5. Magnetic properties 6. Thermal properties

Explanation:

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The normal boiling point of c2cl3f3 is 47.6°c and its molar enthalpy of vaporization is 27.49 kj/mol. what is the change in entr
Goshia [24]
According to this formula when:

ΔG = ΔH - TΔS = 0

∴ ΔS = ΔH/T

∴ ΔS = n*ΔHVap / Tvap

- when n is the number of moles = mass/molar mass 

when the mass = 24.1 g 

and the molar mass = 187.3764 g/mol

by substitution: 

∴ n = 24.1 / 187.3764g/mol

      = 0.129 moles

and ΔHvap is the molar enthalpy of vaporization is 27.49 kJ/mol

and Tvap is the temperature in Kelvin = 47.6 + 273 = 320.6 K

So by substitution, we will get the ΔS the change in entropy:

∴ΔS = 0.129 mol * 27490 J/mol / 320.6 K

      = 11 J/K
7 0
3 years ago
Which of the following set ups which converts centimeters to fit
Eva8 [605]

Answer:

The fourth one down

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The second one down has the correct units but the wrong conversion factor for converting centimetres to inches.

5 0
3 years ago
An organism that can make its own food may be classified into one of several kingdoms, depending on other characteristics. Based
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Which of the following metals has the highest melting point?
AveGali [126]

The metal with the highest melting point is aluminium which melts at 660.3°C.

Magnesium melts at 639°C , sodium at 98°C and potassium at 64°C.

The melting point is the temperature at which a substance  begins to melt. As a solid substance is heated, or absorbs heat from the environment,  the molecules that make up that substance begin to gain more (heat) energy, enough to overcome the intermolecular forces that in the first place have been holding them together in a sort of rigid fashion.

This energy enables the molecules  to break free of their intermolecular forces and thus the solid's lattice structure changes and the solid becomes liquid.

 


3 0
4 years ago
If Argon has a mass number of 40 and an atomic number of 18, how many electrons does a
Tanya [424]
C) 22 because the mass of a neutron is 1 amu and a proton is also 1 amu, so 40-18=22
8 0
4 years ago
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