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andreyandreev [35.5K]
2 years ago
5

Which is not a property of a pure substance

Chemistry
1 answer:
NeX [460]2 years ago
3 0
Pure substances are substances<span> that are made of only one type of atom or molecule....</span>
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Which of the following metals reacts with aqueous Cubo A) Au B) Ag C) Hg D) all of the above E) none of the above
Yanka [14]

Answer:

E) None of the above

Explanation:

Metals react according to the activity series, thta is organized with the leats metals in in the bottom and the most reactive metals in the top. Most reactive metals displace less reactive metals in the compounds they are found.

in this series, Gold, Silver and Mercury are below Copper, this is, they are less reactive than Cu. this means none of them can displace it from its compounds.

4 0
3 years ago
What is the maximum mass of ethyl alcohol you could boil with 1000 j of heat, starting from 22 ∘c?
kramer

solution:

1000 = m*2400*(78-22) + m*8.79*10^5

1000= 134400m + 879000m

1000= 1030200m

m = 1000/1013400

m= 1013.4 grams

the final answer is 0.9706 grams


5 0
3 years ago
What kind of weather periods are usually followed by cholera and malaria outbreaks?
olga nikolaevna [1]
I would say that it would be excessive rain and heat. Because, after a drought and a flood happen, standing water is home to mosquitos which carry malaria. I hope this helps! 
5 0
2 years ago
Predict the sign of ΔSsys for each of the following processes. Which are positive? (a) Gasoline vapors mix with air in a car eng
OLEGan [10]

Answer:

Positive: a and b

Negative: c

Explanation:

The entropy (S) is the measure of the randomness of the system, and it intends to increase. The randomness can be determined by the energy of the molecules, their velocity and how distance they are between the other molecules.

When the entropy increases, ΔS is positive, when the entropy decreases, ΔS is negative. So, when gasoline mix with air in a car engine, the process intends to continue, the randomness increases and ΔS is positive. When hot air expands, the distance between the molecules increases, so ΔS is positive.

But, when humidity condenses, the molecules stay closer, so there's a decrease in the randomness, then ΔS is negative.

6 0
3 years ago
Please answer this!!!!!!!!!!!!!
NeX [460]
What’s the question?
8 0
2 years ago
Read 2 more answers
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