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Alecsey [184]
3 years ago
15

A force of 17 N is exerted on an area of 0.20 m2. What is the pressure?

Chemistry
2 answers:
miss Akunina [59]3 years ago
7 0
The required formula is

Pressure =  \frac{force}{area} \\\\Putting\ given\ values,\ we\ get\\\\Pressure =  \frac{17}{0.2} = 85\ Answer
solmaris [256]3 years ago
5 0
Pressure=\frac{Force}{Area}\\\\Force=17N\\\\Area=0,2m^2\\\\Pressure=\frac{17N}{0,2m^2}=85\ Pascals
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How many moles are in sample containing 2.71 x 10^24 atoms of iron?
Deffense [45]

Answer:

4.5 moles

Explanation:

One mole is equal to 6.022 x 10^23 atoms

2.71 x 10^24 atoms * 1 mol/ 6.022 x 10^23 atoms = 4.5 moles

5 0
3 years ago
What is the approximate time of death if the body temperature was 15.6°C?
WARRIOR [948]

Answer:

This stiffening process, called Rigor Mortis, has a roughly known time of occurrence and can therefore be used to estimate time of death. In general: If the body feels warm and no rigor is present, death occurred under 3 hours before. If the body feels warm and stiff, death occurred 3-8 hours earlier.

6 0
3 years ago
Which of the following has the greatest electronegativity difference between the bonded atoms? View Available Hint(s) Which of t
Reptile [31]

Answer: A group 1 alkali metal bonded to fluoride, such as LiF.

Explanation:

Electronegativity is defined as the property of an element to attract a shared pair of electron towards itself. The size of an atom increases as we move down the group because a new shell is added and electron gets added up.

1. A strong acid made of hydrogen and a halogen, such as HCl : A polar covalent bond is defined as the bond which is formed when there is a difference of electronegativities between the atoms. Electronegativity difference = electronegativity of chlorine - electronegativity of hydrogen = 3-2.1= 0.9

2. A group 1 alkali metal bonded to fluoride, such as LiF: Ionic bond is formed when there is complete transfer of electron from a highly electropositive metal to a highly electronegative non metal.

Electronegativity difference = electronegativity of fluorine - electronegativity of lithium= 4-1= 3

3. Carbon bonded to a group 6A (16) nonmetal chalcogen, such as in CO: A polar covalent bond is defined as the bond which is formed when there is a difference of electronegativities between the atoms.

Electronegativity difference = electronegativity of oxygen - electronegativity of carbon= 3.5-2.5= 1.0

4. A diatomic gas, such as nitrogen (N_2): Non-polar covalent bond is defined as the bond which is formed when there is no difference of electronegativities between the atoms.

Electronegativity difference = 0

Thus the greatest electronegativity difference between the bonded atoms is in LiF.

7 0
3 years ago
Consider chemical reactions between main group metals and non-metals. Based on known bonding patters, which of the following com
Fittoniya [83]

Answer:

You didn't list the compounds it gave you so i cant cross check them to see it they are ionic bonds( which is  the chemical bonding is formed between metal and nonmetal)

if you reply with the compounds it list I will be happy to check for you

4 0
2 years ago
Compare properties of covalent compounds and ionic compounds. Which of the following properties differ because of differences in
____ [38]

Answer:

The answer to your question is below

Explanation:

                                ionic compounds                  covalent compounds

1.- Mass                          it does not depend on the type of compound

2.- Conductivity      -conduct electricity               - do not conduct electricity

                                  in solution.

3.- Color                  - Shiny                                     - opaque

4.- Melting point     - high                                       - lower than ionic compounds

5.- Boiling point     - high                                        - lower than ionic compounds

6.- flammability      - not flammable                       - flammable

6 0
3 years ago
Read 2 more answers
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