Anhydrous magnesium nitrate will decompose when heated giving a white solid and a mixture of two gases X and Y


Answer 1
Answer: I know that one is oxygen. I dont know the other.

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The Elizabethan view of life changed little from the characteristic Medieval view of life. True False



The correct answer is "False".


The Elizabethan Era was a period of England's history that corresponds to  the reign of Queen Elizabeth I (1558–1603). The Elizabethan Era is considered a golden age of England's history, and part of the Renaissance Era (1300-1600). The Elizabethan view of life changed drastically from  the characteristic Medieval view of life. During Medieval times life was seen with a religiously perspective only, while during The Elizabethan Era more people start to view life with a scientific perspective.



A solution is prepared by dissolving 6.00 g of an unknown nonelectrolyte in enough water to make 1.00 l of solution. the osmotic pressure of this solution is 0.750 atm at 25.0^\circ c 25.0 ∘ c. what is the molecular weight (g/mol) of the unknown solute?


Osmotic pressure can be calculated using the following equation:  


C representated concentration

R represented gas constant

T represented temperature

 representated osmotic pressure

R=0.0821 atm L mol ⁻¹

T = 25 + 273 = 298 K


Given mass of the substance= 6.00 g

Volume= 1 L

=0.75 atm

Putting all the values in the equation:

Molar mass of the substance= 195 g mol⁻¹.


What is the particle unit for chlorine gas?


The particle unit of a chlorine gas would be Cl2. It is a diatomic molecule which means that it would exist as a molecule consisting two atoms of different or the same elements. In nature, chlorine gas cannot be readily found or obtained. It can be obtained as a by-product or the main product in chemical reactions. It can be obtained from the electrolytic process of sodium chloride resulting to the production of chlorine gas, NaOH and hydrogen gas where all of the products are highly reactive. Chlorine gas is a very toxic substance to living organisms when present in the body.

Give examples of how low and high levels of radiation can each be helpful.


Visible light
Low frequency waves
Radio waves
Remote controls
Cordless phones
And so on!
Hope this is helpfull! :D

Someone please help me



with what?


There is no question ?

What is the molar mass of Al2(SO4)3? 150.03 g/mol
278.03 g/mol
342.17 g/mol
450.09 g/mol


The molar mass of aluminum sulphate (Al₂(SO₄)₃) obtained from the question given is 342.17 g/mol

What is the molar mass of a compound?

The molar mass a compound is simply defined as the sum of the molar masses of the individual elements found in the compound.

How to determine the molar mass of Al₂(SO₄)₃
  • Molar mass of Al = 27.085 g/mol
  • Molar mass of S = 32 g/mol
  • Molar mass of O = 16 g/mol
  • Molar mass of Al₂(SO₄)₃ =?

Molar mass of Al₂(SO₄)₃ = (27.085×2) + 3[32 + (4×16)]

Molar mass of Al₂(SO₄)₃ = 54.17 + 3[32 + 64]

Molar mass of Al₂(SO₄)₃ = 54.17 + 288

Molar mass of Al₂(SO₄)₃ = 342.17 g/mol

Learn more about molar mass:

1) we find  out the atomic mass of these elements (Al, S, O)Atomic mass (Al)=27 amuAtomic mass (S)=32 amuAtomic mass (O)=16 amu2)Now, we calculate the molar mass of Al₂(SO₄)₃molar mass=2(27)+3[32+4(16)]=54+3(32+64)=54+3(96)=54+288=342 g/mol.answer: 342.17 g/mol.


The section of the comprehensive annual financial report that presents tables and charts showing social and economic data in addition to financial trends, fiscal capacity, and operating information of the government is the: A. Introductory section.
B. Management's discussion and analysis section.
C. Statistical section.
D. Financial section.



C. Statistical section.


The statistical section is a section of financial report that consist of tables, chart of financial details of government over a period of 10 years. It is used to show the financial trends, operation of government, about the economy.

It is that section that is used to analyze, collection, interpret the government policy related to finance. it is mainly concern about the statics analysis of the

government program.


Phosgene (COCl2) is a toxic substance that forms readily from carbon monoxide and chlorine at elevated temperatures: CO(g) + Cl2(g) ⇌ COCl2(g) If 0.430 mol of each reactant is placed in a 0.500−L flask at 600 K, what are the concentrations of all three substances at equilibrium (Kc = 4.95 at this temperature)?


Answer: Concentration of = 0.328 M

Concentration of = 0.328 M

Concentration of = 0.532 M


Moles of   and = 0.430 mole

Volume of solution = 0.500 L

Initial concentration of and  =

The given balanced equilibrium reaction is,


Initial conc.          0.860M     0.860M           0

At eqm. conc.    (0.860-x) M  (0.860-x) M     (x) M

The expression for equilibrium constant for this reaction will be,

Now put all the given values in this expression, we get :

By solving the term 'x', we get :

x =  0.532 M

Thus, the concentrations of at equilibrium are :

Concentration of = (0.860-x) M =(0.860-0.532) M = 0.328 M

Concentration of =  (0.860-x) M  =  (0.860-0.532) M = 0.328 M

Concentration of = x M = 0.532 M


How are volcanoes formed?


Volcanoes are for when magma form within the earths upper mantle

hopes this helps
When magma is formed from within the earths upper mantle it works it way up to the top. when the volcanoes erupts the lava builds the volcanoes bigger and bigger. 
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