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34kurt
4 years ago
11

PLZ HELP WILL CASH APP 10$ FOR RIGHT ANSWERS!!!!

Chemistry
1 answer:
QveST [7]4 years ago
6 0

chemistry sucks ey ;/

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Each of the given statements describes a type of column chromatography. Match the statements to the type of chromatography they
vlada-n [284]

Answer:

The proper matching is given below.

Explanation:

a Separate molecules by size    size exclusion chromatography

b Separate molecules by charge Ion exchange chromatography

c The stationary phase has a covalently bound group to which a protein in the mobile phase can bind.                  Affinity chromatography

d uses mobile phase and stationary phase to separate protein Size exclusion chromatography

e The stationary phase contain  cross linked polymers with different pore size

                                                                  Size exclusion chromatography

f can separate molecules based on protein ligand binding   Affinity chromatography

g The stationary phase may contain negatively or positively charged groups

  ion exchange chromatography            

6 0
3 years ago
identify each material as a compound or a mixture. Caffeine contains hydrogen, carbon, nitrogen, and oxygen atoms in a fixed rat
vitfil [10]
Answer: caffeine is a compound.

Explanation:

1) As stated c<span>affeine contains hydrogen, carbon, nitrogen, and oxygen atoms in a fixed ratio.

2) The definition of compound is a pure substance formed by chemical bonding of two or more fifferent elements. That means a defined ratio of the elements in the compound, which conferes uniform and equal properties to every part of the compound.

Some examples of compounds are salt (NaCl), water (H2O), vinegard (CH3 COOH).

A mixture combines several elements or compounds, not bonded by chemical bonds but mixed in ratios which may vary.
</span>
7 0
3 years ago
Read 2 more answers
Does anyone understand this?
Nikolay [14]
From start:

Joule, J, calorie, 

Example 1: 120 J / 4.184 = 28.68 cal
Example 2: 1200 cal * 4.184 = 5020.8 J
7 0
4 years ago
Mushrooms, yeast, and mold are part of the Kingdom ____________.
Anit [1.1K]

Answer:

fungi

Explanation:

because they are heterotrophs

7 0
4 years ago
A certain amount of hydrogen peroxide was dissolved in 100. ml of water and then titrated with 1.68 m kmno4. what mass of h2o2 w
Aleksandr [31]

The solution for the problem is:

First, use the concentration of the volume of the thing you know to compute for the moles of that substance. Then, use the coefficient in the balanced equation to relay moles of that to moles of anything else in the chemical equation. Lastly, translate moles into mass by means of its molar mass, or into a concentration using the volume.

 

Applying what I have said earlier:

0.0133 L X 1.68 mol/L = 0.0223 mol KMnO4 X (1 mol H2O2 / 2 mol KMnO4) = 0.0112 mol H2O2 


Mass H2O2 = 0.0112 mol H2O2 X 34.0 g/mol = 0.380 grams H2O2

8 0
4 years ago
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