The molar concentration of a solution containing 469 grams of C6H12O6 in 82 milliliters of water is 31.7M.
<h3>HOW TO CALCULATE MOLAR CONCENTRATION:</h3>
- The molar concentration of a solution can be calculated by dividing the number of moles by its volume.
- According to this question, there are 469 grams of C6H12O6 in 82 milliliters of water.
The number of moles = 469g ÷ 180.156g/mol = 2.6mol
Volume of water in litres = 82/1000 = 0.082L
Concentration of solution = 2.6mol ÷ 0.082L = 31.71M
Therefore, the molar concentration of a solution containing 469 grams of C6H12O6 in 82 milliliters of water is 31.7M.
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There are five Family on the periodic table that are alkali metals , Alkaline earth metals , transition metals , Halogens family and noble gas family.
1) In alkali metals, there are six elements are present and among all the elements Sodium metal should be selected. Because sodium metal is most abundant metal in the world.
- uses of sodium are
- sodium salt are common salt that added to the food to enhance the taste.
- washing soda are made up of sodium salt which is used as water softener.
- sodium salts are also used as buffer to maintain Ph.
2) In alkaline earth metal family, The magnesium element should be selected.
- uses of magnesium are
- since magnesium is a soft metal so it can burn easily therefore it is used in fire works.
- magnesium is also important for proper growth and maintenance of bones.
- Magnesium is light weight metal so it can used to make car seat , luggage and power tools etc.
3) In Halogens gas family , chlorine should be selected.
- Uses of chlorine are
- The chlorine is used in cleaning purpose as it act as bleaching agent.
- Chlorine is also used to prepare the pesticides to removes pest in crops.
- In refrigerators, the cold breeze is coming out is chlorine gas which are used to increase the shelf life of the plants.
4) In transition metals , copper metal should be choose.
- Use of copper metal are
- Copper is highly ductile metal so it drawn into wires and used in various electrical purpose.
- The copper has anti corrosive properties so it can used in making kitchen utensils.
- The copper has anti microbial property so it can used in packaging of food.
5) In noble gas elements, The helium gas should be selected
- uses of helium gas are
- It used as semiconductors.
- It used in party balloons.
- The helium is inert gas so it used to make optical fibers.
These are the daily life usage of all the elements of each family of the periodic table.
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First calculate the initial moles of HCl.
HCl moles i = (1.45 moles / L) * 0.5 L = 0.725 moles HCl
Then calculate how much HCl is consumed by stoichiometry:
HCl moles consumed = (12.7 g Zn / 65.38 g / mol) * (2
moles HCl / 1 mole Zn) = 0.388 moles
So HCl moles left is:
HCl moles f = 0.725 – 0.388 = 0.3365 moles
For every 1 mole HCl there is 1 mole H, therefore:
H moles final = 0.3365 moles
So final concentration of H ions is:
<span>Concentration H = 0.3365 moles / 0.5 L = 0.673 M</span>
Answer: The volume of product formed is 0.26 L
Explanation:
As 
is the the excess reagent, 
is the limiting reagent as it limits the formation of product.
According to stoichiometry :
2 moles of give = 2 moles of 
Thus 0.01 moles of will give =
of
According to ideal gas equation:
P = pressure of gas = 101.325 kPa = 1 atm
V = Volume of gas = ?
n = number of moles = 0.01
R = gas constant =
T =temperature =
Thus the volume of product formed is 0.26 L
