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Soloha48 [4]
3 years ago
10

In the Polyacrylamide and Agarose Gels lab, when working with your protein or DNA sample you must wear:

Chemistry
2 answers:
Phantasy [73]3 years ago
7 0
It’s a.all of these your welcome
blagie [28]3 years ago
6 0
It’s a. All of these, you’re welcome
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A substance registers a temperature change from 20°c to 40°c. to what incremental temperature change does this correspond?
Alik [6]
If u are multiplaying it would be 80 percent more likely
or if u are subtracting it would be 20 percent
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3 years ago
A man pours some hot coffee into a small cup from a large jug that contains enough coffee for several cups. Which statement corr
Stells [14]

Answer:

The correct answer is "The coffee in the jug has more thermal energy than the coffee in the cup".

Explanation:

First I had to look for the problem to know the possible answers.

In this case, the coffee jug has a large amount of coffee at the same temperature. If we analyze that the decanter and the coffee are at the same temperature, we have a homogeneous thermal system. The cup is at room temperature, so by pouring coffee into it, the temperature of the coffee decreases to balance with the temperature of the cup. At this moment, the temperature of the cup-cafe system is lower than the jug-cafe system.

Thermal energy is the part of the internal energy of an equilibrated thermodynamic system that is proportional to its absolute temperature and increases or decreases by energy transfer.

In this way, we can ensure that the thermal energy of the cup-cafe system is lower than that of the jug-cafe system.

Have a nice day!

3 0
3 years ago
Which pair of elements form an ionic bond with each other?
kherson [118]
1) KCl 
Potassium Chloride is an ionic bond because it exists between a metal and a nonmetal. The Potassium ion is a cation, carrying a +1 charge; the Chlorine is an anion, carrying a -1 charge. 
8 0
3 years ago
Question 3 of 5
Alexxandr [17]

Answer:

Answer is D.Blue.

Explanation:

The hottest stars tend to appear blue or blue-white, whereas the coolest stars are red.

I hope it's helpful!

6 0
3 years ago
Read 2 more answers
Hurry need answer as soon as possible please . Compare the type of change that occurs when a substance melts and when a substanc
tamaranim1 [39]

Answer:

Explanation:

A substance melting is a physical change and the properties of the substance will remain same, only that the substance will just become liquid.

On the other hand, burning is a chemical change which produces an entirely new compount(in most cases, ash) which does not have the same properties as the original object

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