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Most viewed questions under tag chemistry

+1 vote
1 answer
How does the sensitivity of Gumamela (hibiscus) as a pH indicator compare to Litmus paper?
posted Aug 10, 2018 by Ma.liezel Fernandez
  • chemistry
+2 votes
1 answer
Serine, Valine and Glycine are common forms of what acid?
posted Jan 11, 2017 by Reshmi S
  • chemistry
  • organic chemistry
0 votes
0 answers
An aqueous solution contains 0.4% urea and 3.42% sugar by mass, calculate the osmotic pressure of solution at 27°C?
posted Apr 22, 2018 by Neel Kamal
  • chemistry
0 votes
1 answer
Calculate the weight of KMnO4 contained in 2 litres of 0.15 M solution
posted Sep 16, 2018 by Kumar Shubham
  • chemistry
0 votes
0 answers
What is the product name of CH3-CH-CH2-CH3
posted Oct 28, 2020 by Zakria Bukhari
  • chemistry
0 votes
0 answers
calculate the ph of a buffer solution that result when 40ml of 0.1M NH3 diluted to 600 ml with deionized water?
posted Sep 27, 2020 by Hawnaz M Mohammad
  • chemistry
+2 votes
2 answers
What is the Chemical name of Heavy water?
posted May 17, 2016 by Mukul Chag
  • science
  • chemistry
+2 votes
2 answers
Who discovered Aluminum and when?
posted Jan 27, 2017 by anonymous
  • invention
  • science
  • personality
  • chemistry
  • discovery
+1 vote
2 answers
Which scientist discovered the radioactive element radium?
posted Jun 24, 2015 by Sandeep Otari
  • personality
  • chemistry
  • elements
0 votes
1 answer
What is the chemical formula of the Sugar?
posted Jun 26, 2018 by Aman Rajbhar
  • chemistry
  • chemical formula
0 votes
0 answers
Which colloidal solution is used in photography?
posted Aug 24, 2018 by Ruchi Kashyap
  • photography
  • general
  • chemistry
+1 vote
1 answer
What was the contribution by the Nobel prize winner George A. Olah?
posted Mar 11, 2017 by Pooja
  • nobel
  • personality
  • chemistry
0 votes
0 answers
Calculate the mole fraction of benzene in solution containing 30%by mass in carbon tetrachloride
posted Nov 30, 2020 by Çhèlz Krystlé
  • chemistry
0 votes
0 answers
Which oxides is formed when potassium metal is burnt in excess air?
posted Aug 25, 2018 by anonymous
  • chemistry
+1 vote
1 answer
Nitroglycerin is made by treating glycerin with nitric acid and … what?
posted Dec 17, 2019 by Prithvi
  • chemicals
  • chemistry
0 votes
1 answer
What is the full name of the compound - CH2ClCH2CHClCHCl2
posted Dec 18, 2017 by anonymous
  • chemistry
+1 vote
0 answers
Which scientist has developed the periodic table to arrange all the elements in a structured way?
posted Apr 30, 2015 by anonymous
  • personality
  • chemistry
+1 vote
1 answer
Which element has the highest and lowest density?
posted Oct 16, 2017 by Jordan White
  • chemistry
  • elements
0 votes
0 answers
String theory question
posted Aug 10, 2019 by Comeback Tuesday
  • general
  • chemistry
  • science
  • physics
+1 vote
1 answer
What is the percentage of salt in ocean water?
posted Oct 31, 2017 by Jordan White
  • ocean
  • science
  • water
  • chemistry
0 votes
1 answer
Zirconium, hafnium and rutherfordium are elements in the same group.............what is the fourth member of this group?
posted Sep 23, 2015 by Nikhil Pandey
  • chemistry
  • metal
–1 vote
2 answers
Do water and ice weigh the same?
posted Feb 19, 2018 by Azhar Keer
  • water
  • physics
  • chemistry
  • science
0 votes
1 answer
For what discovery did Sir Harold Kroto, Robert Curl and Richard Smalley receive the 1996 Nobel Prize in Chemistry?
posted Aug 23, 2016 by Nikhil Pandey
  • chemistry
  • nobel
  • award
+2 votes
0 answers
What is the another name for Fire Gas?
posted Jan 27, 2017 by anonymous
  • science
  • chemistry
0 votes
0 answers
Check the following image and help me with the electrochemistry question?
posted Feb 9, 2018 by Anks Great
  • electrochemistry
  • physics
  • chemistry
0 votes
Which of the following is the name of an element in the periodic table? [MCQ]
posted Sep 10, 2018 by anonymous
  • chemistry
+1 vote
1 answer
What is the structural formula of ch4
posted Jan 10, 2018 by Sntosh Rastoge
  • chemistry
0 votes
0 answers
How do the atoms in a water molecule stick together?
posted Nov 2, 2017 by Alivia Clark
  • science
  • water
  • chemistry
+1 vote
1 answer
Elements in the periodic table show two main numbers. What does the number with decimal places represent?
posted Feb 12, 2021 by Simranjeet Singh
  • chemistry
  • elements
+1 vote
1 answer
Who was awarded a Nobel Prize in 1908 for his work on the chemistry of radioactive substances?
posted Nov 28, 2016 by Aarati Mahajan
  • nobel
  • award
  • chemistry
+1 vote
1 answer
When were the last elements formally discovered and added to the periodic table of elements?
posted Jul 1, 2021 by Ujjwal Mehra
  • elements
  • chemistry
0 votes
Which of these substances is composed of only two elements – hydrogen and oxygen? [MCQ]
posted Sep 3, 2018 by Alok Dev
  • elements
  • chemistry
  • substance
+1 vote
0 answers
What happens to your voice when you inhale hydrogen or helium gas?
posted Oct 26, 2017 by Panchika Trivedi
  • science
  • gas
  • human
  • chemistry
0 votes
0 answers
what is the volume of gas at 0 degree celcius
posted Mar 29, 2018 by Rajan Chauhan
  • chemistry
0 votes
0 answers
4 new elements added to the periodic table? Can someone please provide the details of these elements?
posted Jan 5, 2016 by Amit Kumar Pandey
  • chemistry
  • science
0 votes
Which petroleum refinery product has the lowest boiling point? [MCQ]
posted Jul 4, 2018 by Subham Singh
  • petrol
  • chemistry
  • science
0 votes
0 answers
Of four balloons filled respectively with ozone, carbon dioxide, oxygen and ammonia, which gas will make balloon float?
posted Jan 22, 2019 by Chahat Sharma
  • chemistry
  • science
0 votes
1 answer
Which acid is used in synthetic lemonade?
posted Aug 19, 2018 by Sandy Joe
  • general
  • chemistry
+1 vote
How many isomers are there for C7H7CL [MCQ]
posted Jan 20, 2019 by Subodh Kulkarni
  • chemistry
+2 votes
1 answer
Burning methane in the presence of oxygen produces water and what gas?
posted May 29, 2019 by Naveen Kumar
  • chemistry
  • science
  • general
0 votes
0 answers
What is the definition of Chemistry?
posted Jan 14, 2018 by Ashutosh Negi
  • definition
  • chemistry
0 votes
0 answers
chemisty question on molecular formular ,empirical formular ,gas and periodic table
posted Jun 7, 2020 by Brenda Wakoli
  • chemistry
+1 vote
1 answer
How many elements are currently formally recognised in the periodic table of elements as having been observed?
posted Sep 15, 2021 by Pankaj Deshmukh
  • chemistry
  • elements
+2 votes
0 answers
Because of what chemical element the presence of the Glass color is deep blue.
posted Apr 21, 2016 by Debolina Charaborthy
  • science
  • chemistry
0 votes
0 answers
Why the apple changes its color to brown after few minutes of cutting it?
posted Aug 25, 2018 by anonymous
  • food
  • why
  • chemistry
0 votes
0 answers
How do substance like con and water move in and out of the cell
posted Jun 29, 2018 by Golu Sitpara
  • chemistry
  • science
0 votes
0 answers
What is the chemical symbol for Manganese?
posted Sep 9, 2019 by Sidharth Malhotra
  • chemistry
  • chemical symbol
+1 vote
1 answer
Which poison is also an element on the periodic table?
posted Feb 10, 2021 by Aman
  • chemistry
  • elements
0 votes
0 answers
osmotic pressure notes
posted Mar 13, 2019 by Sonu Kumar Ray
  • chemistry
0 votes
0 answers
What is the ratio of hydrogen atoms to oxygen atoms respectively in a molecule of water?
posted Nov 2, 2018 by Prithvi
  • chemistry
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