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what is the diff between atoms and molecule?
WHEN COPPER CARBONATE REACTS WITH HYDROCHLORIC ACID, ACCORDING TO ME THE PRODUCTS WILL BE COPPER CHLORIDE AND HYDROGEN CARBONATE.
CUCO3+HCL=CUCL+HCO3
BUT IT THE TEXTBOOKK ITS WRITTEN THAT THE PRODUCTS OF THIS REACTION IS COPPER CHLORIDE, CARBON DIOXIDE AND WATER. HOW IS THIS POSSIBLE
50 names of compounds and their chemical formula
Define mole concept?
calculate the no. of atoms in 16u of helium .
what are the limitations of dalton's atomic theory?
which has he maximum volume of S.T.P and why?
(a) 1.5 * 1023 molecules of CO2
(b) 1g of H2
(c) 4g of O2
(d) 16 g SO3
gve list of monovalent cations/anions
diavalent cations /anions
trivalent cations/anions.
in HNO3 the valency of hydrogen is 1 and valency of NO3 is 2 then why it is written HNO3 in place of H2NO3
calculate the mass of 1 molecule of of oxygen gas : given [at mass of o = 16u,NA =6.022 * 1023 mol -1]
Calculate the number of molecules of sulphur (S8) present in 16 g of solid sulphur.
In this question why do we multiply the avagadro number? We are to find number of molecules, so why we take out moles?????????????? plzzzzzz reply
the reciprocal of ____________ is called avogram
how can we find the valency of polyatomic ions like SO4, SO3, CO3,PO4 etc.?
how to calculate the valency of any compound?
Calculate the molecular mass of potassium permanganate (KMnO4). Atomic masses: K=39.0u,
Mn=55.0u, O=16.0u.
calculate the molar mass of nitric acid HNO3 (H=1,N=14,O=16)
Write their valencies and chemical formula of the following compounds.
a) Zinc carbonate c) Ammonium sulphide
b) Barium chloride d) Sodium nitrate
Calculate the mass of 1 atom of silver and 1 molecule of carbon dioxide.
what is the valency of nitrite?
valency table
The formula of compounds formed by following ions.
Cr3+ and SO4 2-
Pb2+ and NO31-
calculate the no. of aluminium ions present in 0.051g of aluminium oxide
give me a list of atomicity of all elements
From 200 mg of CO2 ,1021 molecules are removed.How many moles of CO2 are left ?
a) 0.288 b) 2.88 c) 0.00288 d) 0.0288
prove the formula K.E.=1/2mv2
How many atoms are there in the tip of the pen? (Approximately)
calculate the molar mass of CO2, H2SO4, NaCl?
one atom of magnesium is 24 times heavier than 1/12 of a carbon -12 atom , so the atomic mass of magnesium is ?please give full description?
what is meant by tetra atomic and poly atomic?
I want all elements' symbols with their valencies and atomicity.
Calculate the number of moles in 52 g of helium gas ?
what are polyatomic ions?give examples
Why are Dalton's symbols not used in Chemistry
what is the difference between nitrate,nitride,nitrite?
the ratio by number of atoms present in the molecule of carbon dioxide is. This means that the ratio by mass of atoms present in the molecule of carbon dioxide (C: O) is 3:8 (12 × 1: 16 × 2 = 12:32, where 12 u and 16 u are the atomic masses of carbon and oxygen atoms respectively).Please Explain!!!!!!!!
what were the drawbacks of Daltons atomic theory?
Convert 10g of oxygen gas into no. of moles.
if the isotopic distribution of C-12 and C-14 is 98% and 2% respectively, the number of C-14 atoms in 12 g of carbon is
a)1.032x1022
b)1.032 x 1023
c)3.88 x 1022
d)1.302 x 1022
and pls explain
Write the names of the following acids/bases.
a) KOH B) HCI c) NH4OH d) HNO3
What is the difference between O2 and 2O?
if one mole of carbon atoms weighs 12g what is the mass of 1 atom of carbon?? plss explain....
why atomic mass of some element are in fraction
what is the atomicity of phosphorous?and valency?
How do we find the molecular mass of polyatomic ions?? plz answer fast, tomorrow is my test..
explain dalton's atomic theory and write its drawbacks
Give two examples of molecules having three different kinds of atoms.
Is there any trick to learn Valency?
How to solve numericals based on the mole concept?
2g of hydrogen combine with 16g of oxygen to form water.How many grams of water will be formed?Please help me solve this problem as soon as possible!
Calculate the number of molecules of phosphorus [P4] present in 31 gram of phosphorus.
calculate the number of moles in 32g of methane.
A ball is dropped from a height of 10m. If the energy of the ball reduces by 40% after striking the ground, how much high can the ball bounce back ?
Why is valency of magnesium 2? How can we find the valency of an atom?
calculate the number of moles in 22g of carbondioxide?
Calculate mass of 3.011 X 10 23no of nitrogen atoms ( atomic mass of N = 14 u)
Q. How many molecules are present in 1 ml of water..? explain
HOW MANY MOLES ARE THERE IN 5G OF SODIUM HYDROXIDE
give 2 examples of polyatomic elements
difference between molecular mass formula unit mass.
DEFINE MOLE CONCEPT & ITS FORMULAS?
/
Is there any difference between molar mass and molecular mass?If yes then how
HOW MANY GRAMS OF Mg WILL HAVE THE SAME NUMBER OF ATOMS AS 40.5gOF Al?(Mg=24u,Al=27)
Convert into mole.
(a) 12 g of oxygen gas
(b) 20 g of water
(c) 22 g of carbon dioxide
Calculate the number of moles in 3.011*1023 molecules of nitrogen: (Atomic mass of N 14u)
Relative density of gold is 19.5.The density of water is 1000kg/m3.what will be the density of gold in S.I unit and in g/cc.
GIVE AN EXAMPLE OF 1] DIATOMIC 2] TRIATOMIC MOLECULE OF COMPOUNDS
An element E forms the following compounds with hydrogen and oxygen,
a) H2E b) EO2 c) EO3
Chlorophyll contains 2.68% of magnesium by mass.Calculate the number of magnesium atoms in 3.00 g of chlorophyll
a) 1.98 * 1021 atoms b) 6.023 * 1023 atoms c) 1.7 * 1020 atoms d) 2.8 * 1022 atoms
What is the difference between 2N and N2 ?
srisaji@yahoo.com
calcium is monoatomic or diatomic
what are alkalis give 2 examples
How many number of moles in co2 contain 8.0g of oxygen?
what is the differences between 2H and H2 ?
Calculate the mass of one atom of sodium.
what is the mass of 0.2 mole atom of carbon?
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Syllabus
what is the diff between atoms and molecule?
WHEN COPPER CARBONATE REACTS WITH HYDROCHLORIC ACID, ACCORDING TO ME THE PRODUCTS WILL BE COPPER CHLORIDE AND HYDROGEN CARBONATE.
CUCO3+HCL=CUCL+HCO3
BUT IT THE TEXTBOOKK ITS WRITTEN THAT THE PRODUCTS OF THIS REACTION IS COPPER CHLORIDE, CARBON DIOXIDE AND WATER. HOW IS THIS POSSIBLE
50 names of compounds and their chemical formula
Define mole concept?
calculate the no. of atoms in 16u of helium .
what are the limitations of dalton's atomic theory?
which has he maximum volume of S.T.P and why?
(a) 1.5 * 1023 molecules of CO2
(b) 1g of H2
(c) 4g of O2
(d) 16 g SO3
gve list of monovalent cations/anions
diavalent cations /anions
trivalent cations/anions.
in HNO3 the valency of hydrogen is 1 and valency of NO3 is 2 then why it is written HNO3 in place of H2NO3
calculate the mass of 1 molecule of of oxygen gas : given [at mass of o = 16u,NA =6.022 * 1023 mol -1]
0.4 mole of CO2 (At Mass of C = 12 &O=16 a.m.u) (17.6g)
Calculate the number of molecules of sulphur (S8) present in 16 g of solid sulphur.
In this question why do we multiply the avagadro number? We are to find number of molecules, so why we take out moles?????????????? plzzzzzz reply
the reciprocal of ____________ is called avogram
how can we find the valency of polyatomic ions like SO4, SO3, CO3,PO4 etc.?
how to calculate the valency of any compound?
Calculate the molecular mass of potassium permanganate (KMnO4). Atomic masses: K=39.0u,
Mn=55.0u, O=16.0u.
calculate the molar mass of nitric acid HNO3 (H=1,N=14,O=16)
Write their valencies and chemical formula of the following compounds.
a) Zinc carbonate c) Ammonium sulphide
b) Barium chloride d) Sodium nitrate
Calculate the mass of 1 atom of silver and 1 molecule of carbon dioxide.
what is the valency of nitrite?
valency table
The formula of compounds formed by following ions.
Cr3+ and SO4 2-
Pb2+ and NO31-
calculate the no. of aluminium ions present in 0.051g of aluminium oxide
a...FeSO4
b...CH3COOK
give me a list of atomicity of all elements
one atom of gold,one gramatom of nitrogen,one mole of calcium,one tram of iron
From 200 mg of CO2 ,1021 molecules are removed.How many moles of CO2 are left ?
a) 0.288 b) 2.88 c) 0.00288 d) 0.0288
prove the formula K.E.=1/2mv2
How many atoms are there in the tip of the pen? (Approximately)
calculate the molar mass of CO2, H2SO4, NaCl?
one atom of magnesium is 24 times heavier than 1/12 of a carbon -12 atom , so the atomic mass of magnesium is ?please give full description?
what is meant by tetra atomic and poly atomic?
Which of the following does not affect the rate of evaporation ?
(1) Wind speed
(2) Surface area
(3) Temperature
(4) Insoluble heavy impurities
I want all elements' symbols with their valencies and atomicity.
Calculate the number of moles in 52 g of helium gas ?
1) aluminium cyanide
2) magnesium chlorate
3) ammonium sulphate
4) iron (II) oxide
5) potassium di chromate
6) hydrogen nitrate
what are polyatomic ions?give examples
Why are Dalton's symbols not used in Chemistry
what is the difference between nitrate,nitride,nitrite?
the ratio by number of atoms present in the molecule of carbon dioxide is. This means that the ratio by mass of atoms present in the molecule of carbon dioxide (C: O) is 3:8 (12 × 1: 16 × 2 = 12:32, where 12 u and 16 u are the atomic masses of carbon and oxygen atoms respectively).
Please Explain!!!!!!!!
what were the drawbacks of Daltons atomic theory?
Convert 10g of oxygen gas into no. of moles.
if the isotopic distribution of C-12 and C-14 is 98% and 2% respectively, the number of C-14 atoms in 12 g of carbon is
a)1.032x1022
b)1.032 x 1023
c)3.88 x 1022
d)1.302 x 1022
and pls explain
Write the names of the following acids/bases.
a) KOH B) HCI c) NH4OH d) HNO3
What is the difference between O2 and 2O?
if one mole of carbon atoms weighs 12g what is the mass of 1 atom of carbon?? plss explain....
why atomic mass of some element are in fraction
what is the atomicity of phosphorous?and valency?
How do we find the molecular mass of polyatomic ions?? plz answer fast, tomorrow is my test..
explain dalton's atomic theory and write its drawbacks
Give two examples of molecules having three different kinds of atoms.
Is there any trick to learn Valency?
How to solve numericals based on the mole concept?
2g of hydrogen combine with 16g of oxygen to form water.How many grams of water will be formed?Please help me solve this problem as soon as possible!
Calculate the number of molecules of phosphorus [P4] present in 31 gram of phosphorus.
calculate the number of moles in 32g of methane.
A ball is dropped from a height of 10m. If the energy of the ball reduces by 40% after striking the ground, how much high can the ball bounce back ?
Why is valency of magnesium 2? How can we find the valency of an atom?
calculate the number of moles in 22g of carbondioxide?
Calculate mass of 3.011 X 10 23no of nitrogen atoms ( atomic mass of N = 14 u)
(A)10^23 molecules of H2
(B)1 mole of H2O
(C)10^22 atoms of oxygen
(D)1 mole of N2
Q. How many molecules are present in 1 ml of water..? explain
HOW MANY MOLES ARE THERE IN 5G OF SODIUM HYDROXIDE
rngive 2 examples of polyatomic elements
difference between molecular mass formula unit mass.
DEFINE MOLE CONCEPT & ITS FORMULAS?
/
Is there any difference between molar mass and molecular mass?If yes then how
HOW MANY GRAMS OF Mg WILL HAVE THE SAME NUMBER OF ATOMS AS 40.5gOF Al?(Mg=24u,Al=27)
Convert into mole.
(a) 12 g of oxygen gas
(b) 20 g of water
(c) 22 g of carbon dioxide
Calculate the number of moles in 3.011*1023 molecules of nitrogen: (Atomic mass of N 14u)
Relative density of gold is 19.5.The density of water is 1000kg/m3.what will be the density of gold in S.I unit and in g/cc.
GIVE AN EXAMPLE OF 1] DIATOMIC 2] TRIATOMIC MOLECULE OF COMPOUNDS
An element E forms the following compounds with hydrogen and oxygen,
a) H2E b) EO2 c) EO3
Chlorophyll contains 2.68% of magnesium by mass.Calculate the number of magnesium atoms in 3.00 g of chlorophyll
a) 1.98 * 1021 atoms b) 6.023 * 1023 atoms c) 1.7 * 1020 atoms d) 2.8 * 1022 atoms
What is the difference between 2N and N2 ?
(1) Ammonium (2) Sulphite
(3) Sulphate (4) Sulphide
srisaji@yahoo.com
calcium is monoatomic or diatomic
what are alkalis give 2 examples
How many number of moles in co2 contain 8.0g of oxygen?
what is the differences between 2H and H2 ?
Calculate the mass of one atom of sodium.
what is the mass of 0.2 mole atom of carbon?