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amid [387]
3 years ago
9

What is the final step in scientific polling?

Chemistry
1 answer:
Ratling [72]3 years ago
6 0

Answer:select and control     A. interpreting the results

Explanation:

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Which of the following techniques is used to separate proteins by function?
Anon25 [30]

Ammonium sulfate precipitation is used to separate proteins by function

However, it is one of the most commonly used methods for laboratory scale protein purification and fractionation. This method is also used to separate proteins by altering their solubility.

<h3>What is separation techniques?</h3>

Separation technique is a process or method used to the components of mixtures.

There are different types of separation technique which includes sublimation, precipitation, sieving, evaporation and many more.

Learn more about separation techniques:

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2 years ago
What direction does the energy flow in an exothermic reaction? *
Sedbober [7]
<h3>Answer: <u><em>In an exothermic reaction, heat flows from the system into the surroundings, increasing the temperature of the surroundings.</em></u></h3>

7 0
2 years ago
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How many valence electrons does the lewis structure for a chlorine atom show? the molecule structure of cl has with electrons a.
blsea [12.9K]

Seven valence electrons are present in the 'Lewis structure' for the given chlorine atom

A Chlorine atom has total 17 electrons in total. In the 'first orbit' 2 electrons, 10 electrons in the 'second orbit' and finally 7 electrons in the last orbit. As Chlorine is a Group 7 element, chlorine will have 7 'valence electrons' in its outermost orbit. While drawing the 'Lewis structure' of Chlorine we shall put seven dots that is the electrons or valance electrons around the symbol of Chlorine (CI).

<h3>What are Valence electrons ?</h3>

The electrons in an atom's outermost shell, or energy level, are called valence electrons. For instance, the valence electrons of oxygen are six, with two in the 2s subshell and four in the 2p subshell.

  • An atom's outer shell electrons, known as valence electrons, can take role in the creation of chemical bonds. When two atoms establish a single covalent bond, normally both atoms contribute one valence electron to create a shared pair. The ground state of an atom is its state with the least amount of energy.

Learn more about Valence electron here:

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7 0
2 years ago
What can you conclude about the relative magnitudes of the absolute values of ΔHsoluteΔHsolute and ΔHhydrationΔHhydration, where
olganol [36]

Absolute value describes the distance of a number on the number line from 0 without considering which direction from zero the number lies. The absolute value of a number is never negative. The absolute value of 5 is 5.

<u>Explanation:</u>

The heat energy released when new bonds are made between the ions and water molecules is known as the hydration enthalpy of the ion. The hydration enthalpy is the enthalpy change when 1 mole of gaseous ions dissolve in sufficient water to give an infinitely dilute solution. Hydration enthalpies are always negative.

Heat of hydration or enthalpy of hydration of ions corresponds to the heat that is released by hydration of one mole of ions at a constant pressure. The more the ion is hydrated, the more heat is released. Degree of hydration depends on the size and charge of ion.

7 0
3 years ago
A woman weighing 600 N is leaning on the ground with shoe soles with a total area of ​​0.04 m2. Calculate the pressure of the mo
Arlecino [84]

Answer:

1.5×10^4

Explanation:

Pressure= force/area

P= 600/0.04

P= 15000

P= 1.5×10^4

7 0
3 years ago
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