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,N_A =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 SO_{4 ^2-}

Pb²⁺ and NO_3^1-

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 ?

• Which has more number of atoms? 100g of N2 or 100g of NH₃

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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.