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Significant figures

Significant figures

Significant figures- Significant figures- “The significant figures of a number are digits that carry meaningful contributions to its measurement  Continue Reading »

1 month ago
Significant figures

Significant figures calculation

Significant figures Calculations involving Significant figures- Rule 1-       When addition & subtraction of digits is carried out, the  Continue Reading »

1 month ago
Rounding off

Rounding off the Numbers

Rounding off the Numbers Rounding off the Numbers- Round to the Nearest Hundred Ex-   1650 i) Identify the  Continue Reading »

1 month ago

Classification of matter

Classification of matter-   Classification of matter- MATTER– It occupies space & possesses mass, it can exist in three  Continue Reading »

1 month ago

Rank the following atoms and molecules based on which would effuse the fastest. i) H2  ii) He iii) N2 iv) CO2 v) H2S

Question – Rank the following atoms and molecules based on which would effuse the fastest. i) H2  ii) He  Continue Reading »

11 months ago
Kohlrausch law

Kohlrausch law- Applications

Kohlrausch law- source : slideplayer.com Applications of Kohlrausch law- 1)  Calculation of degree of ionisation and ionisation constant- Degree  Continue Reading »

11 months ago

Find the solubility of MnS in neutral water in gm/l .Ksp of MnS = 2.6 x 10-14

Find the solubility of MnS in neutral water in gm/l ? Ksp of MnS = 2.6 x 10-14. Solution  Continue Reading »

12 months ago

If the initial concentration of cyclopropane is 0.0501 M. What will the cyclopropane concentration after 352minutes.The reaction is first order. Rate constant = 3.36 x 10-5 sec-1. 

Question – If the initial concentration of cyclopropane is 0.0501 M. What will the cyclopropane concentration after 352 minutes.  Continue Reading »

12 months ago

What is the concentration of KMnO4 solution in mole/litre which gives an absorbance of 0.120 when measured in a 2.0 cm cell ?

Question – What is the concentration of KMnO4 solution in mole/litre which gives an absorbance of 0.120 when measured  Continue Reading »

12 months ago
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