ankitesh gupta
Last Activity: 12 Years ago
1. ASSUME A MIXTURE OF O2 AND O3 THE TOTAL VOLUME IS 0.6LITRES AND TOTAL WT IS 1gm AT NTP
LET US CONSIDER ''a'' LITRES AND ''b'' gm OF O3 IN THE MIXTURE THEREFORE THE VOLUME AND WT OF O3 PRESENT IN MIXTURE WOULD BE ''0.6-a'' litres and '' 1-b '' gm AT NTP
NOW MOLECULAR WT OF O2 AND O3 ARE 32 AND 48
AT STP AND NTP MOLES=VOLUME(LITRES)/22.4
ALSO MOLES = MASS/MOLECULAR MASS THEREFORE FOR O2 b/32=a/22.4...........................(1)
simillarly for O3 (1-b)/48=(0.6-a)/32.................(2)
SOLVING EQUATION (1) AND (2) GET THE VALUE OF ''a'' and ''b'' AND THEN GET YOUR REQUIRED ANSWER
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2. NO. OF MOLECULES=NO. OF MOLES X AVAGADROS NO. AVAGADRO NO. IS 6.022 X 10^23
NO. OF MOLES = 10^25/6.022 X 10^23...........................(1)
NO. OF MOLES ALSO EQUAL TO= MASS / MOLECULAR MASS...............................(2) MOLECULAR MASS OF CCL4 IS 12+4 X 35.5=142+12=154
FROM USING (1) AND (2) GET THE VALUE OF MASS NOW DENSITY = 1.5gm/ml
DENSITY = MASS/VOLUME...................(3) YOU KNOW THE VALUE OF MASS AND DENSITY SUBSTITUTE THOSE VALUES IN EQUATION (3) AND GET YOUR ANSWER WHICH WILL BE ''ml''
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3.
Be would be lighter on this scale than it is on the C-12 scale
however
nature would not be changed by this new definition
the ratio of masses between any two given atoms of elements would be the same
so
the measured masses of all atoms would be slightly less by this new definition
an atom twice as heavy as Be would now weigh 18 as opposed to 18.02 by C-12 standard
Of course, the mass of the atoms have not changed in an absolute sense
we have just redefined the standard of measurement
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5. SINCE DENSITY OF WATER IS 1000KG/M^3 SO 22.4 L OF H2O GAS AT NTP MOLES=V(LITRES)/22.4 THE NO. OF MOLES @NTP IS 1 ALSO MOLES =WT/MOLECULAR MASS
MOLECULAR MASS OF H20 IS 18 THEREFORE WEIGHT OF H20 GAS WOULD BE 18 gm .SINCE H20 GAS IS CONVERTED TO H2O LIQUID THE MASS WOULD BE CONSERVED THEREFORE FORM DENSITY=MASS / VOLUME WE CAN CALCULATE VOLUME REMEMBER KEEP WT IN KG THE YOU WILL GET YOUR ANSWER IN M^3
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6. SINCE WE KNOW DENSITY OF WATER IS 1000KG/M^3
1gm=(1/1000)KG AND 1ML=(1/1000000)M^3
BY SUBSTITUTING THE VALUES OF MASS AND VOLUME THE DENSITY COMES OUT TO BE 1000KG/M^3 AND HENCE 1gm=1ml
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4TH ANSWER IS TOO BIG AND HARD TO EXPLAIN ON P.C AND THE LAST ONE I DONT KNOW SORRY
AND IF YOU ARE SATISFIED PLZZZZZZZZZZZZ APPROVE THE ANSWER BY CLICKING YES BUTTON ....................