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Arun asked a question
Subject: Science, asked on on 27/6/15
A mixture having 2 g of hydrogen and 32g of oxygen occupies how much volume at NTP
Arun.h.a asked a question
Subject: Science, asked on on 1/7/14

differences between dilute and concentrated
Mansi Garg asked a question
Subject: Science, asked on on 5/10/16
a sulphuric acid solution contains 98% h2so4 the density of solution is 1.98g/cm3 calculate the molarity and molality        98soluti
Alfina Azeez asked a question
Subject: Science, asked on on 1/9/14

it was found that the weight of carbon atom in the signature of a person who put it using carbon pencil was 1.2mg. what is the number of carbon atom contained it ?
Arun asked a question
Subject: Science, asked on on 27/6/15
116 mg o a compound on vaporisation in a Victor meyer's Apparatus displaced 44.8 ml of air measured at STP.Themolecular weight of the compound is
Devika Vijaya Nair asked a question
Subject: Science, asked on on 11/12/13

what kind of chemical reaction is used in preparing CCL4 from methane?write the chemical equation?
Arun asked a question
Subject: Science, asked on on 27/6/15
Common salt obtained from sea water contains 95% NaCl by mass. The approximate number of molecules present in 10.0 g of the salt is
Farha asked a question
Subject: Science, asked on on 23/6/14

why should we balance a chemical equation??
Arya asked a question
Subject: Science, asked on on 1/3/15

what is  molar solution
Manju asked a question
Subject: Science, asked on on 31/5/19
a sample of water gas has a composition by volume of 50 % hydrogen 45 % carbon monoxide and 5 %carbon dioxide. calculate the volume in litres at STP of water gas which on treatment with excess of steam will produce 5 litre hydrogen .the equation for the reaction is co + H2O -> CO2 + H2
Nova Anna Thomas asked a question
Subject: Science, asked on on 27/6/15
WHAT IS STP?
Abigail asked a question
Subject: Science, asked on on 7/1/17
A body ascends a slope with a speed of 10 m/s. if 10% of the energy of the body is due to friction, the height to which the body will rise rise is​
Joseph R asked a question
Subject: Science, asked on on 3/8/17
What is the volume of co2 liberated ( in liters) at 1atm pressure and 273k when 20 g of 50% pure calcium carbonate is treated with excess dilute H2SO4
Aditya Dhanda asked a question
Subject: Science, asked on on 7/11/16
10 raised to the power 22 atoms of an element X are found to have a mass of 930g. calculate the molar mass of X
Joseph R asked a question
Subject: Science, asked on on 2/8/17
What is the volume of co2 liberated (in liters) at 1 atm pressure and 273 k when 20g of 50% pure caco3 is treated with excess dilute h2so4
Manasi asked a question
Subject: Science, asked on on 30/12/16
how to calculate molecular mass and atomic mass?
Nafiha Noufal asked a question
Subject: Science, asked on on 5/8/18
How many molecules are present in 710 g of chlorine gas (cl 2)? What will be the total number of atoms in it?
Rishi Shankar asked a question
Subject: Science, asked on on 17/2/18
Explain buffer action of CH3COONH4 solution.clearly mention its stable pH
Kichu asked a question
Subject: Science, asked on on 22/9/15
Could you please explain the moleconcept in easiet way?
Karthik asked a question
Subject: Science, asked on on 19/7/19
A ball dropped on a anvil from a height 3.6 m is found to rise up 2.5 m after re-bounding. Calculate the velocity with which the ball(A) strikes the anvil (B) leaves the anvil. Please answer it fastly. ..
Salma asked a question
Subject: Science, asked on on 15/3/19
please help me answer this experts.please explain how to get  b part of question
Salma asked a question
Subject: Science, asked on on 15/3/19
please answer fast please experts explain how to get this answer
Surya M asked a question
Subject: Science, asked on on 14/2/19
please help me..
Nafiha Noufal asked a question
Subject: Science, asked on on 29/7/18
What will be the mass in grams of 1000000 molecules of water?
Priyanka asked a question
Subject: Science, asked on on 20/10/16
5.22×10-4 mole of a gas containing H2, O2, and N2 exerted a pressure of 67.4 mm in a certain standard volume. The gas was passed over a hot platinum filament which combined H2 and O2 into H2O which was frozen out. When the gas was returned to the same volume, the pressure was 14.3 mm. Extra oxygen was added to increase the pressure to 44.3 mm. The combustion was repeated, after which the pressure read 32.9 mm. What was the mole fraction of H2, O2, and N2 in the gas sample?
Surya M asked a question
Subject: Science, asked on on 15/2/19
please help me .
Henna Jahan M M asked a question
Subject: Science, asked on on 11/5/16
Why is only Kelvin scale used in the study of gases?
Joel asked a question
Subject: Science, asked on on 23/10/18
Please solve it...
Athul S Govind asked a question
Subject: Science, asked on on 20/4/18
One gram of a solute PQ?????2?present in 52g of water gives ?tb as 0.156K and one gram of PQ?????3 in 52g of water gives ?tf as 0.125.? atomic weights of P and Q are?
Ismail Parambaden asked a question
Subject: Science, asked on on 24/8/16
In combustion of methane(CH4 2O2=CO22H2O),WHEN ONE MOLE METHANE BURNED COMPLETELY HOW MANY MOLS OF CO2&WATER FORMED?
Surya M asked a question
Subject: Science, asked on on 14/2/19
please help me....
Joseph R asked a question
Subject: Science, asked on on 12/8/17
Which one of the following sets of compound correctly illustrates the law of reciprocal propotion
A p2o3,ph3,h2o
B p2o5,ph3,h2o
C n2o5,Nh3,h2o
D n2o,nh3,h2o
Rajeswary asked a question
Subject: Science, asked on on 4/3/18
Solve this:

The gam molecular mass of glucose ( C6H12O6) is 180g . Find the mass of glucose dissolved in 500 ml of 1M of glucose ? What volume of Carbon Monoxides required at 51P for the complete reduced of 320 g of Fe2O3

                                    Fe2O3 +3CO → 2Fe +3CO2
Hijaz asked a question
Subject: Science, asked on on 7/3/17
Solve this:
Shahana asked a question
Subject: Science, asked on on 14/7/20
some characteristics of constant moving gas molecules are responsible for maintaining the pressure of a gas. write any two relevant characteristics
Joel asked a question
Subject: Science, asked on on 23/10/18
Please solve it....
Nafiha Noufal asked a question
Subject: Science, asked on on 7/8/18
Answer this question
Pranay Kamal asked a question
Subject: Science, asked on on 2/10/16
how many mol and how many grams of Hcl are present in 300ml of 12 mol solution ?
Abhishek S asked a question
Subject: Science, asked on on 27/10/17
Cation present in a white precipitate insoluble in NH4OH but soluble in NaOH
Salma asked a question
Subject: Science, asked on on 6/11/18
Please answer fast
Aswani Baby K S asked a question
Subject: Science, asked on on 28/10/18
depresssion in freezing point is 6k for Nacl solution
Vikas asked a question
Subject: Science, asked on on 4/8/17
Advantages of pollution?
Shakkeeba Ck asked a question
Subject: Science, asked on on 22/4/18
Which of the following molecule is most stable? a)33As82 b)93Np237 c)84Po214 d)50Sn118
Ismail Parambaden asked a question
Subject: Science, asked on on 24/8/16
In combustion of methane(CH4 +2O2=CO2+2H2O),WHEN ONE MOLE METHANE BURNED COMPLETELY HOW MANY MOLS OF CO2&WATER FORMED?
Shakkeeba Ck asked a question
Subject: Science, asked on on 21/4/18
KMnO4 solution become colourless at a ph of..
Salma asked a question
Subject: Science, asked on on 14/9/18
Answer for second questionspleaseee
Sripaul asked a question
Subject: Science, asked on on 19/4/19
find the number of moles in 2 g in NAOH
Joseph R asked a question
Subject: Science, asked on on 2/8/17
Solve this:
Salma asked a question
Subject: Science, asked on on 14/9/18
Give answer to first question fast
Shamil Cm asked a question
Subject: Science, asked on on 6/6/18
what is a sub shell
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