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Sergeu [11.5K]
4 years ago
14

Elements that can have several different structures with different physical properties are called?

Chemistry
1 answer:
Sergeeva-Olga [200]4 years ago
4 0
Liquid for sure,
mercury,
gas,
all i can think off
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In a distillation operation, the heat added to the boiler a) increases with increase in reflux ratio b) decreases with increase
Leni [432]

Answer:

a) increases with increase in reflux ratio

Explanation:

If we increase the reflux ratio, which can de defined as : L/D = Condesate back to column /distillate discarded from column, it means that we increase the amount of condensate back to column. So the reboiler load will increase and be maximum in case of Total reflux ratio. And as vapor load will be increased, diameter of column will be increased too.  

7 0
3 years ago
What has a higher temperature a match or an ice cube
swat32

I would say the match because it has a higher temperature but I kinda feel it’s A ice cube because it’s to much of an easy question

6 0
4 years ago
Select all of the BENEFITS of a PARALLEL circuit. If one bulb burns out the rest of the bulbs will stay lit. The bulbs do not ge
artcher [175]

Answer:

The first two options are correct

Explanation:

The first two options are part of the benefits of a parallel connection of bulbs in a circuit. Here, the voltage of each connecting bulb is the same as the voltage of the bulb in the circuit hence all the bulbs have the same voltage running through them. Thus, when one bulb is removed/burns out, it does not affect the remaining bulbs (those ones will remain lit). Also, the addition of bulb(s) does not cause the remaining bulbs in the circuit to get dimmer (since they will all have the same voltage).

4 0
3 years ago
Which of the following are all associated with the immune system?
nikdorinn [45]

Answer:

White Blood cells, Bone marrow, Skin

Explanation:

good luck

7 0
3 years ago
If 11.9 kJ are used to heat a sample of water the temperature increases from 20.0°C to
Kipish [7]

Answer:

m=4.51g

Explanation:

Hello!

In this case, since the energy involved during a heating process is shown below:

Q=mCp\Delta T

Whereas the specific heat of water is 4.184 J/(g°C), we can compute the heated mass of water by the addition of 11.9 kJ (11900 J) of heat as shown below:

m=\frac{Q}{Cp\Delta T}

Thus, by plugging in, we obtain:

m=\frac{11900J}{4.184\frac{J}{g\°C}(650\°C-20.0\°C)}\\\\m=4.51g

Best regards!

7 0
3 years ago
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