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spayn [35]
2 years ago
13

1. The following results were obtained in analysis of iron ore for iron: 34.79%, 34.86%, 34.80%, 34.53% and 34.76% Calculate the

Standard Deviation for the analysis ​
Chemistry
1 answer:
lana66690 [7]2 years ago
3 0
<h2>Standart Deviation Steps:</h2>

1. Work out the mean (the simple average of the numbers).

2. Then for each number: subtract the mean and square the result.

3. Then work out the mean of those squared differences.

4. Take the square root of that.

<h2>Result:</h2>

Number of Elements in Array: 5

Series Average: 34,748

Median: 34,795

Smallest Number: 34,53

Biggest Number: 34.86

Standard Deviation: 0.12716131487209

Variance (Standard Deviation): 0.01617

Standard Deviation of the Population: 0.1137365376649

Variance (Standard Deviation of Population): 0.012936

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Is a solution in which (OH) = 1.0 10-1M acidic, basic, or neutral?
astra-53 [7]

Answer:

The pH is 13,00 and the solution is basic.

Explanation:

<em> </em>The pH indicates the acidity or basicity of a substance. PH values between 0 and less than 7 indicate acidic solutions, 7 neutral and higher than 7 to 14 basic. It is calculated as

pH = -log (H 30+)

Both pH and pOH have a relationship to belonging to the same aqueous solution: the expression of the Kwater (ionic product of the water Kw) is used:

[H3O ^ +]x [OH ^ -] = 1x 10 ^ -14

[H3O ^ +]x [1.0 10-1]=1x 10 ^ -14

[H3O ^ +]= 1x 10 ^ -14/1.0 10-1M= <em>1.0 10-13 M</em>

pH = -log (H 30+)= -log (1.0 10-13 M)= <em>13, 00</em>

As the pH value is higher than 7, it corresponds to a basic substance.

5 0
3 years ago
Suggest a method to liquefy atmospheric gases.
kicyunya [14]

Answer:

WASSUP BRO

Explanation:

The gases can be converted into liquids by bringing its particles closer so atmospheric either by decreasing temperature or by increasing pressure

8 0
3 years ago
Read 2 more answers
II. Binding Forces A. Write a brief, one or two sentence, description of each binding force listed below. 1. London dispersion f
Leya [2.2K]

Answer:

All description is given in explanation.

Explanation:

Van der Waals forces:

It is the general term used to describe the attraction or repulsion between the molecules. Vander waals force consist of two types of forces:

1.  London dispersion forces

2.  Dipole-dipole forces

1. London dispersion forces:

These are the weakest intermolecular forces. These are the temporary because when the electrons of atoms come close together they create temporary dipole, one end of an atom where the electronic density is high is create negative pole while the other becomes positive . These forces are also called induce dipole- induce dipole interaction.

2.  Dipole-dipole forces:

These are attractive forces , present between the molecules that are permanently polar. They are present between the positive end of one polar molecules and the negative end of the other polar molecule.

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It is the electrostatic attraction present between the atoms which are chemically bonded. The one atom is hydrogen while the other electronegative atoms are oxygen, nitrogen or flourine. This is weaker than covalent and ionic bond.

Ionic bond or electrostatic attraction:

It is the electrostatic attraction present between the oppositely charged ions. This is formed when an atom loses its electron and create positive charge and other atom accept its electron and create negative charge.

Hydrophobic interaction:

It is the interaction between the water and hydrophobic material. The hydrophobic materials are long chain carbon containing compound. These or insoluble in water.

Covalent bond:

These compounds are formed by the sharing of electrons between the atoms of same elements are between the different element's atoms. The covalent bond is less stronger than ionic bond so require less energy to break as compared to the energy require to break the ionic bond.

5 0
3 years ago
HELP WILL GIVE BRANLIEST
Elodia [21]

Answer:

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6 0
3 years ago
What is the basic definition of carbohydrates
ikadub [295]

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Simple carbohydrates are those that contain one or two sugar molecules linked together. Complex carbohydrates are those that contain  three or more sugar molecules linked together. In some cases these chains can contain hundreds of sugar molecules. 

 

8 0
3 years ago
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