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zepelin [54]
3 years ago
9

Which of the following substances has

Chemistry
2 answers:
Dmitry [639]3 years ago
4 0
D.  all of the above, although I do find it hard to believe something like flour would have a melting point, I looked up my answer to double check. 
alina1380 [7]3 years ago
3 0

Answer:

D all of the above

Explanation:

Melting point represents the exact temperature at which the solid state changes to the liquid of a given substance. Water is one of the most commonly used elements to exemplify the melting point principle. For this solid state (ice) to take the form of liquid water, it must be exposed to a temperature of at least 0 °C. Thus, the melting point of water is equal to 0 °C.

The salt has a melting point of 801 ° C, the melting point of sugar is 185 ° C and the melting point of flour is 264 ° C. From this we can see that all these products have a higher melting point than water.

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0.65 moles of O2 originally at 85°C is cooled
soldier1979 [14.2K]

Answer:

2.09 atm

Explanation:

We can solve this problem by using the equation of state for an ideal gas, which relates the pressure, the volume and the temperature of an ideal gas:

pV=nRT

where

p is the pressure of the gas

V is its volume

n is the number of moles

R is the gas constant

T is the absolute temperature

In this problem we have:

n = 0.65 mol is the number of moles of the gas

V = 8.0 L is the final volume of the gas

T=40C+273=313 K is the temperature of the gas

R=0.082 atm L mol^{-1} K^{-1} is the gas constant

Solving for p, we find the final pressure of the gas:

p=\frac{nRT}{V}=\frac{(0.65)(0.082)(313)}{8.0}=2.09 atm

8 0
4 years ago
The number of nearest neighbors (atoms that make contact) around each atom in a face-centered cubic lattice of a metal is
Anika [276]

Answer:

12

Explanation:

The number of nearest neighbors (atoms that make contact) around each atom in a face-centered cubic lattice of a metal is

12.

This is because in a face centered cubic lattice ,there are ions found at the center of each of the six faces which are usually packed together and in close contact with one another.

7 0
3 years ago
What product(s) (excluding stereoisomers) is/are formed when y is heated with br2?
KatRina [158]
When the molecule undergoes chlorination with Cl2 on heating, the hydrogen atom of the alkyl group is replaced by the chlorine atom and form chloroalkanes. The molecule X containes three types of alkyl halides, therefore three different types of chloroalkanes are formed by the replacement of hydrogem atom linked to these alkyl groups. Thus the three different types of chloroalkanes are formed - primary, secondary, and thertiary chloroalkane. Chlorination is not selective so a mixture pf products results. The products formed by the reaction of the molecule with Y with Cl2 are shown on the attached file.


7 0
3 years ago
Carbon can bond with other carbon atoms to produce cyclic hydrocarbon structures. true false
tigry1 [53]
The answer is true.
An example is cyclohexane.
6 0
3 years ago
Express 14.80 × 12.10 × 5.05 in scientific notation with the proper significant figures.
Naya [18.7K]
9.04354 * 10^2

The “*” identifies as a multiplication sign. Hope this helps
8 0
3 years ago
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