Ask questions which are clear, concise and easy to understand.
Posted by Himanshu Upadhyay 5 hours ago
- 0 answers
Posted by Ranjana Suman 6 hours ago
- 1 answers
Sia 🤖 3 hours ago
Racemization occurs when one pure form of an enantiomer is converted into equal proportion of both enantiomers, forming a racemate.
Posted by Rutuja Murhe 15 hours ago
- 0 answers
Posted by Ekta Rai 17 hours ago
- 3 answers
Kishan Kumar 15 hours ago
Posted by Raman Brar 19 hours ago
- 1 answers
Div¥@N$Hi P@M@® 17 hours ago
Posted by Faiz Malik 21 hours ago
- 1 answers
Khuskaran Sidhu 20 hours ago
Posted by Anshika Tiwari 1 day ago
- 5 answers
Posted by Deepanshi Tripathi 1 day, 4 hours ago
- 1 answers
Sia 🤖 1 day, 1 hour ago
{tex}Mole\;fraction,\;x\;=\frac{\frac wm}{\frac wm+\frac WM}{/tex}
(where, w and m represent the mass and molar mass of solute and W and M represent the mass and molar mass of solvent.)
{tex}\frac1x\;=\frac{\frac wm+\frac WM}{\frac wm}{/tex}
{tex}\frac1x=1+\frac{W\times m}{M\times w}\times\frac{1000}{1000}{/tex}
{tex}\frac1x=1+\frac{1000}{M\times m}{/tex}({tex}\because{/tex}Molality, {tex}m=\frac{w\times1000}{m\times W}{/tex})
{tex}=1+\frac{1000}{18\times4.5}{/tex} ({tex}\because{/tex} Molor mass of H2O=18gmol-1)
{tex}=1+\frac{1000}{81}{/tex}
{tex}=\frac{1081}{81}=13.34{/tex}
{tex}x=\frac1{13.34}=0.075{/tex}
Posted by Divyansh Batra 1 day, 3 hours ago
- 1 answers
Sia 🤖 1 day, 3 hours ago
Given, Mass of solute (glycerol) (W2) =?
Molar mass of solute (M2) = 92 g mol-1
Mass of solvent (water) (W1) = 500g
{tex}\Delta{/tex}Tb = 100.42oC - 100oC
= 0.42oC = 0.42 k
Kb = 0.512 k kg mol-1
{tex}\therefore{/tex} {tex}\Delta{/tex}Tb = Kb {tex} \times \frac{{{W_2}}}{{{M_2}}}{/tex}{tex}\times{/tex} {tex}\frac{100}{W_1}{/tex} {tex}\therefore{/tex} W2 = {tex}\frac{{{\Delta T_b} \times {M_2}\, \times {W_1}\,}}{{{K_b} \times \,100}}{/tex}
W2 = {tex}\frac{{0.42 \times 92\, \times 500\,}}{{0.512 \times 1000}}{/tex}
W2 = 37.73 g
Hence, the mass of glycerol dissolved = 37.73 g.
Posted by Pragati Gautam 1 day, 8 hours ago
- 2 answers
Raman Brar 17 hours ago
Posted by Kirti Singh 1 day, 9 hours ago
- 3 answers
Vikas Semwal 17 hours ago
Posted by Vaibhav Singh 1 day, 17 hours ago
- 1 answers
Vikas Semwal 17 hours ago
Posted by Mohammad Amannullah 1 day, 18 hours ago
- 0 answers
Posted by Abhaykumar Gautam 1 day, 18 hours ago
- 0 answers
Posted by Roma Khatwani 2 days, 3 hours ago
- 2 answers
Muskan Jangra 1 day, 17 hours ago
Rishabh Rathi 2 days, 3 hours ago
Posted by Upasana Upa 1 day, 23 hours ago
- 2 answers
Sia 🤖 1 day, 23 hours ago
The Sandmeyer reaction is a chemical reaction used to synthesize aryl halides from aryl diazonium salts using copper salts as reagents or catalysts. It is an example of a radical-nucleophilic aromatic substitution.
Deepika Joshi 1 day, 16 hours ago
Posted by Upasana Upa 2 days, 12 hours ago
- 0 answers
Posted by Lalchhanhimi Zote 2 days, 12 hours ago
- 1 answers
Sia 🤖 1 day, 22 hours ago
H2SO4, 413 K
{tex}\underset{Ethanol}{2\;CH_3-CH_2-OH}\rightarrow\underset{Ethoxy\;ethane\;(or\;Diethyl\;ether)}{CH_3-CH_2-O-CH_2-CH_3\;+\;H_2O}{/tex}
Posted by Lovely Singh 2 days, 15 hours ago
- 3 answers
Neha Tomar 1 day, 19 hours ago
Few rules to keep homework help section safe, clean and informative.
- Don't post personal information, mobile numbers and other details.
- Don't use this platform for chatting, social networking and making friends. This platform is meant only for asking subject specific and study related questions.
- Be nice and polite and avoid rude and abusive language. Avoid inappropriate language and attention, vulgar terms and anything sexually suggestive. Avoid harassment and bullying.
- Ask specific question which are clear and concise.
Remember the goal of this website is to share knowledge and learn from each other. Ask questions and help others by answering questions.
,,,,,,,,,,, ,,,,,,,,,,, 1 day, 22 hours ago
Posted by Keshav Kumar 2 days, 17 hours ago
- 1 answers
Mehak Verma 2 days, 15 hours ago
Posted by Wajid Ali Hashmi 2 days, 18 hours ago
- 4 answers
Posted by Vihaan Shergill 2 days, 21 hours ago
- 1 answers
Khuskaran Sidhu 2 days, 20 hours ago
Posted by Mehak Verma 3 days ago
- 0 answers
Posted by Mehak Verma 3 days ago
- 2 answers
Posted by Mehak Verma 3 days ago
- 1 answers
Vikas Semwal 2 days, 20 hours ago
Posted by Î$Hîka Gùpt@:-):-)🥰🥰 3 days, 2 hours ago
- 0 answers
Posted by Songachan Shimray 3 days, 2 hours ago
- 3 answers
Vikas Semwal 2 days, 20 hours ago
Gaurav Seth 3 days, 1 hour ago
|
Minerals |
Ores |
|
1. The natural materials in which the metals or their compounds are found in earth are called minerals. 2. All the ores are minerals. |
1. Those minerals from which the metals can be extracted conveniently and profitably are called ore. 2. All the minerals are not ores. |
Buy Complete Study Pack
Subscribe complete study pack and get unlimited access to selected subjects. Effective cost is only ₹ 12.5/- per subject per month. Based on the latest CBSE & NCERT syllabus.
CBSE Test Generator
Create papers in minutes
Print with your name & Logo
Download as PDF
3 Lakhs+ Questions
Solutions Included
Based on CBSE Blueprint
Best fit for Schools & Tutors
Work from Home
- Work from home with us
- Create questions or review them from home
No software required, no contract to sign. Simply apply as teacher, take eligibility test and start working with us. Required desktop or laptop with internet connection
