मराठी
महाराष्ट्र राज्य शिक्षण मंडळएस.एस.सी (मराठी सेमी-इंग्रजी) इयत्ता ९ वी

If 0.2 mol of the following substance is required how many grams of that substance should be taken? Calcium carbonate - Science and Technology

Advertisements
Advertisements

प्रश्न

If 0.2 mol of the following substance is required how many grams of that substance should be taken?

Calcium carbonate

बेरीज
Advertisements

उत्तर

Molar mass of CaCO3 = 40 + 12  + 3(16) = 100 g/mol

Number of moles of a substance = `"Mass of the substance in grams"/"Molecular mass of the substance"`

Let Mass of the substance in grams be x,

`0.2 = "x"/100 = 20`g

we need, 20 g of CaCO3 for obtaining 0.2 moles of CaCO3.

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 4: Measurement of Matter - Exercise [पृष्ठ ५७]

APPEARS IN

बालभारती Science and Technology [English] 9 Standard Maharashtra State Board
पाठ 4 Measurement of Matter
Exercise | Q 8.3 | पृष्ठ ५७

संबंधित प्रश्‍न

Calculate the molar mass of the following substance: 

Nitric acid, HNO3


What is the mass of 10 moles of sodium sulphite (Na2SO3)?


Choose the correct answer from the options given below:

The ratio between the number of molecules in 2g of hydrogen and 32g of oxygen is:

[Given that H = 1, O = 16]


What is a group of 6.022 × 1023 particles known as ?


What name is given to the amount of substance containing 6.022 × 1023 particles(atoms,molecules or ions) of a substance ?


How many moles are 3.6 g of water ?


How many moles of calcium carbonate (CaCO3) are present in 10 g of the substance ? (Ca = 40 u ; C = 12 u ; O = 16 u)


If 0.2 mol of the following substance is required how many grams of that substance should be taken?

Sodium chloride


Explain with examples what is meant by a 'mole' of a substance.


Explain the term:

Gram mole


Explain the term: 

Mole


A sample of ammonium nitrate when heated yields 8.96 litres of steam (measured at STP)
NH4NO3 → N2O + 2H2O
What volume of dinitrogen oxide is produced at the same time as 8.96 L of steam?


A sample of ammonium nitrate when heated yields 8.96 litres of steam (measured at STP)
NH4NO3 → N2O + 2H2O
What mass of ammonium nitrate should be heated to produce 8.96L of steam?


Define the term:

Gram atom


Find the number of moles in 10 g of CaCO3.


If phosphorus is considered to contain P4 molecules, then calculate the number of moles in 100g of phosphorus?


Solid ammonium dichromate decomposes as:

\[\ce{(NH4)2Cr2O7 -> N2 + Cr2O3 + 4H2O}\]

If 63 g of ammonium dichromate decomposes. Calculate the quantity in moles of nitrogen formed.


Match the following.

1. 8 g of O2 - 4 moles
2. 4 g of H2 - 0.25 moles
3. 52 g of He - 2 moles
4. 112 g of N2 - 0.5 moles
5. 35.5 g of Cl2 - 13 moles

How many grams are there in the following?

4 moles of the phosphorous molecule, P4


Deduce the number of molecules of the following compound in the given quantity.

8.8g carbon dioxide


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×