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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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HELP PLEASE I LOVE YOU YOURE THE BEST :)
dusya [7]

Answer:

B

Explanation:

combine it all together

5 0
2 years ago
Why can't polyatomic ions ever stand alone?
natta225 [31]
I believe its because oxygen and carbon cant be sperated
8 0
3 years ago
Label the following changes as Physical or
Leno4ka [110]

Answer:

17

Two clear liquids mix and form a

white solid

18.chemical

A pot of water begins to

boil

19.Physical

the rest im usure on.

5 0
2 years ago
2. (Exercise 4.1.6) A liquid adhesive consists of a polymer dissolved in a solvent. The amount of polymer in the solution is imp
Lilit [14]

Answer:

800 lb of pure solvent , 1700 lb of 20% solution and 500 lb of 10% solution will be mixed to form 3000 lb of 13 % solution .

Explanation:

3000 lb of 13% solution is required .

Total adhesive in weight = 3000 x .13 = 390 lb of adhesive

Available = 500 lb of 10% solution = 50 lb of adhesive

Rest = 390 - 50 = 340 lb required .

rest mass of solution = 3000 - 500 = 2500 lb

mass of adhesive required = 340 lb

Let the mass  of 20% required be V

mass of adhesive = .20 V

.20 V = 340

V = 1700

rest of the volume = 2500 - 1700 = 800 lb which will be of pure solvent

So 800 lb of pure solvent , 1700 lb of 20% solution and 500 lb of 10% solution will be mixed to form 3000 lb of 13 % solution .

6 0
3 years ago
NaOH+HCl->............
Oxana [17]

Answer:

NaCl+H20

Explanation:

It is a neutralisation reaction in which NaOH is a base and HCl is an acid. On reaction it forms salt and water.

Please mark as brainliest

3 0
2 years ago
Read 2 more answers
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