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Lady_Fox [76]
2 years ago
7

2)a dish contains a blackish-yellow powder.when a magnet is moved over it black particles iron get stuck to the magnet and only

yellow powder which is sulphur is left behind. was your original powder an element compound or mixture
Chemistry
1 answer:
Andrei [34K]2 years ago
6 0
A element mixture (key word: mixture) due to the mixture containing 2 different types of elements it can be said that it’s highly likely that the mixture was not a compound but instead of a mixture due to mixture meaning more than 1 material. Hopes this help!
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The energy of a pendulum is recorded at different positions in the table below. Use the data in the table to determine the amoun
natta225 [31]

Answer:

36.55 J

Explanation:

PE = Potential energy

KE = Kinetic energy

TE = Total energy

The following data were obtained from the question:

Position >> PE >>>>> KE >>>>>> TE

1 >>>>>>>> 72.26 >> 27.74 >>>> 100

2 >>>>>>>> 63.45 >> x >>>>>>>> 100

3 >>>>>>>> 58.09 >> 41.91 >>>>> 100

The kinetic energy of the pendulum at position 2 can be obtained as follow:

From the table above, at position 2,

Potential energy (PE) = 63.45 J

Kinetic energy (KE) = unknown = x

Total energy (TE) = 100 J

TE = PE + KE

100 = 63.45 + x

Collect like terms

100 – 63.45 = x

x = 36.55 J

Thus, the kinetic energy of the pendulum at position 2 is 36.55 J.

7 0
2 years ago
Water has a density of 1.0 g/cm3. Glycerin, a liquid used in some soaps, has a density of 1.26 g/cm3. If an object sinks in wate
sdas [7]
For an object to sink in something, it's density has to be higher than the object it is in, so if it sinks in water the number has be higher than 1

And to float, and objects density has to be lower than that of the substance it is put in, so it has to be lower than 1.26

So between 1 and 1.26
5 0
3 years ago
Read 2 more answers
I need help on this one pliz
Artyom0805 [142]
The answer would be 16.04.
8 0
3 years ago
?<br> Which of the following correctly describes an acidic solution at 25°C?
makvit [3.9K]

Answer: [H3O+] > [OH-] and Kw = 1 x 10 -14

Explanation:

i just had this question and tried to look it up and i got it right by guessing my bad but i hope this is ur answer as well

4 0
3 years ago
Which of the following mixtures will react the fastest?
olga2289 [7]

Answer:

I think the answer would be A.

8 0
3 years ago
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