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Subject: Science, asked 19 hours, 10 minutes ago

This is my school test book .
In chapter Mole concept in one part it is written 1 mole of object means 6.022?10^-23 but in avogardo number it is written 6.023 ?10^-23, but both values should be same .
In exam which value should i prefer
Please tell me

Subject: Science, asked 19 hours, 53 minutes ago

SO3 is prepared by oxidizing SO2 with Oxygen. How many grams of SO2 will be required to produce 40 g of SO3
Experts please solve this one

Subject: Science, asked 20 hours, 2 minutes ago

X number of molecules are present in 11.2 litre CO2 how many molecules will be there in 1.8 grams of H2O

Experts please solve this one

Subject: Science, asked 20 hours, 8 minutes ago

if the number of molecules present in 9 gram of water is n ,what will be the number of molecules in 44gram of CO2
Experts please solve this one , step by step

Subject: Science, asked 1 day, 15 hours ago

In Mass/Mass % formula which is Mass of solute/ Mass of solvent x 100 then in denominator when to use Mass of solution and when to use mass of solution and mass of solvent? Please give 2 examples as welll
 

Subject: Science, asked 1 day, 18 hours ago

When are we using upon solvent and upon solution in numericals of ch-2 Is matter around us pure. Please provide 2-2 examples as well.
 

Subject: Science, asked 1 day, 21 hours ago

In rate law expression we consider concentration term molarity my question is why do not we consider the concentration term molality?because we find effect of change in volume of container in rate of reaction but if we consider molality instead of molarity than change in volume will not effect rate of reaction. ( pls read my question carefully and than explain it )

Subject: Science, asked 2 days, 10 hours ago

A boy moves a distance of 3m towards north and 4m towards east and finally 6m towards south. Find The distance covered by the boy and then the displacement.

Subject: Science, asked 2 days, 10 hours ago

Please answer this question with full explanation maam / sir

Subject: Science, asked 2 days, 12 hours ago

An Object is moving in a circle of radius 5m with centre o .It starts from a
Calculate the distance and displacement
  1. When it completes half circle
  2.  When it Completes full Circle

Subject: Science, asked 2 days, 18 hours ago

All physics formulas used in class 9

Subject: Science, asked 2 days, 20 hours ago

Q9..Which of the following are physical changes?
Melting of iron metal, rusting of iron, bending of iron rod, drawing a wire of iron metal.

Subject: Science, asked 2 days, 20 hours ago

Q.1 Based on which factor a solution is said to be diluted, concentrated or saturated?

Q 2.ldentify solute and solvent in 'tincture of iodine,

Subject: Science, asked 2 days, 21 hours ago

Chemistry question. .

Subject: Science, asked 3 days ago

Give reasons for the following observation:
The smell of hot sizzling food reaches you several meters away, but to get the smell from cold food you have to go close.

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