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Devhuti
Subject: Science
, asked on 17/1/18
Friends a b c d ask to prepare Colloidal Solutions the following diagram show the preparation done by them name the student who will be able to prepare Colloidal Solutions write two properties of Colloidal Solutions
Answer
2
Devhuti
Subject: Science
, asked on 17/1/18
Contains 60 g of common salt in 240 G of water calculate the concentration in terms of mass by mass percentage of solution ? Give the principal following technique used in separation of mixture (1) centrifugation (2) chromatography (3)distillation
Answer
2
Devhuti
Subject: Science
, asked on 17/1/18
A) if an atom has one electron and one proton , state the charge and justify . B) if Z=3 , what would be the valancy of the element ? Also name the element
Answer
6
Sms
Subject: Science
, asked on 17/1/18
Mam I could'ntunderstand how the things are arranged in matter , all the substances like atoms ,molecules,elements ,compounds .I know that matter contains atoms and atoms are having protons and nuetronsin the centre and electrons move in orbits , then what are elements ,ions and compounds .I have seen the recording of 'the mole concept' .
Answer
1
Prithvi Raj Singh
Subject: Science
, asked on 16/1/18
sir , how can a super position of an object can be defined by just the use of the detectors only in Double Slit Experiment and what pilot wave theory in such a situation of defined position .
Answer
1
Bhavya Biswas
Subject: Science
, asked on 16/1/18
what s formula unit mass??? pls.. give in easy language. i am totally confused!!!!!!
Answer
2
Prathayush
Subject: Science
, asked on 15/1/18
number of atoms of cl2 in one mole and number of molecules of cl2 in one mole
Answer
2
Harsh Agarwal
Subject: Science
, asked on 15/1/18
Suppose that the radius of the earth become twice of its original radius without any change IN its mass .Then what will happen to your weight?
Answer
1
Prathayush
Subject: Science
, asked on 15/1/18
what mass of co2 would be formed when 24 grams of carbon is burnt in 64 grams of oxygen
Answer
2
Tejas Goyal
Subject: Science
, asked on 14/1/18
Q. What is the valency of Mg in Magnesium Chloride?
Answer
2
Tejas Goyal
Subject: Science
, asked on 14/1/18
Q. What is chemical formula? What is chemical formula of Sodium hydrogen Carbonate, Aluminium Sulphate, Ferric Chloride.
Answer
1
Jiya Verma
Subject: Science
, asked on 12/1/18
write electronic configuration of aluminium and find its valency , atomic no. of al is 13
Answer
1
Norah
Subject: Science
, asked on 10/1/18
what is the chemical formula for Cuprous nitrite?
Answer
2
Sneha Maity
Subject: Science
, asked on 9/1/18
Pl give answer
Q.18). a). When 5 g of calcium is burnt in 25 g of oxygen then 7 g of calcium oxide is produced. What mass of calcium oxide will be produced when 5 g of calcium is burnt in 20 g of oxygen. Which law of chemical combination give your answer? State the law.
Answer
2
Shashwat Mishra
Subject: Science
, asked on 5/1/18
Do 5 moles of CO
2
and 5 moles of H
2
O have same masses if no then how much?
Answer
2
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Q. What is the valency of Mg in Magnesium Chloride?
Q. What is chemical formula? What is chemical formula of Sodium hydrogen Carbonate, Aluminium Sulphate, Ferric Chloride.
Q.18). a). When 5 g of calcium is burnt in 25 g of oxygen then 7 g of calcium oxide is produced. What mass of calcium oxide will be produced when 5 g of calcium is burnt in 20 g of oxygen. Which law of chemical combination give your answer? State the law.