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worty [1.4K]
4 years ago
8

A student is given a small sample of a pure solid substance. She is asked to identify the substance based on a particular proper

ty. Which property, if determined accurately, would best help her identify the substance?
Chemistry
1 answer:
Bond [772]4 years ago
6 0

Answer:

The student

identifies various ways

in which substances

differ (e.g., mass, volume, shape, density,

texture, and reaction

to temperature and

light).

Explanation:

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Compound A melts at 801o C and is soluble
Karo-lina-s [1.5K]

Explanation:

Organic compounds are defined as the compounds which contain carbon as their main element. For example, CH_{3}OH is an organic compound.

Generally, organic compounds are non-polar in nature and due to the presence of covalent bonding organic compounds have low melting point.

As compound A melts at 801^{o}C and is soluble  in water. This means it is an ionic compound as it has high melting point and it is also polar in nature.

Whereas compound B melts at 24^{o}C and is insoluble  in water. This means that this compound has covalent bonding and it is also non-polar in nature . Hence, it is more likely to be organic in nature.

Thus, we can conclude that compound B is more likely to be an organic

compound.

7 0
3 years ago
Can Someone help me pls?
Ilia_Sergeevich [38]

Answer:

For H3O concentration you do 10^-pH so if pH is 5 then H3O+ is 10^-5= 1*10^-5 H3O+ ions

For OH is one extra step. First find H3o+ ions using equation above then you have to use that to divide 1*10^-14

So if pH is 5....the H3O+ is 1*10^-5 then OH- = (1*10^-14)/(1*10^-5) =  1*10^-9 OH ions

as far as acid/base pH 0-6 is Acid 8-14 is Base. pH of 7 is neutral. Recheck your work *hint* *hint* water is neutral. Spit is above 7 so is base.

8 0
3 years ago
Why is it important to assume that the rate of radioactive decay has remained constant over time?
alexira [117]
It remains constant because it is an element. Just like Chernobyl, there is still active radiation. Radiation is something that stays in the air for a verrrry long time. <span>Radioactivity kill cells, so lets say you have your phone on but its in your pocket.the radiation from the phone is killing your cells.</span>
4 0
3 years ago
What happens when ethanol is heated from 20ºC to 85ºC?​
DIA [1.3K]
The c of the water or specific heat of water is 4 if the temperature is 25 degrees c and cubic meter in air. Contain 22 grams
8 0
3 years ago
1. Given the following equation:
CaHeK987 [17]

Answer:

a. C₄H₁₀/O₂    =  2:13 (example)

b. O₂/CO₂      = 13:8

c. O₂/H₂O      = 13:10

d. C₄H₁₀/CO₂ =  2:8

e. C₄H₁₀/H₂O =  2:10

Explanation:

2C₄H₁₀ + 13O₂ ⟶ 8CO₂ + 10H₂O

The molar ratios are the same as the coefficients in front of the formulas.

3 0
3 years ago
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