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अर्कज ..
Subject: Chemistry
, asked on 24/5/18
Explain:
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2
अर्कज ..
Subject: Chemistry
, asked on 24/5/18
Explain:
Answer
1
Ghosh Brothers
Subject: Chemistry
, asked on 24/5/18
H2O2 is sold as a solution of approximately 5 grams of H2O2 per 100 ml of solution. The of molarity of the solution is approximately ?
Answer
1
अर्कज ..
Subject: Chemistry
, asked on 23/5/18
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1
अर्कज ..
Subject: Chemistry
, asked on 23/5/18
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1
अर्कज ..
Subject: Chemistry
, asked on 23/5/18
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1
अर्कज ..
Subject: Chemistry
, asked on 23/5/18
$10mL{N}_{2}and25mL{H}_{2}atsamePandTareallowedtoreacttogiveN{H}_{3}quantitatively.Predict\phantom{\rule{0ex}{0ex}}\left(i\right)thevolumeofN{H}_{3}formed,\phantom{\rule{0ex}{0ex}}\left(ii\right)limitingreagent.$
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1
अर्कज ..
Subject: Chemistry
, asked on 23/5/18
Solve this:
Answer
1
अर्कज ..
Subject: Chemistry
, asked on 23/5/18
Solve this:
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1
अर्कज ..
Subject: Chemistry
, asked on 23/5/18
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Answer
1
अर्कज ..
Subject: Chemistry
, asked on 23/5/18
EXAMPLE 18 Calculate equivalent mass of (a) HNO
_{3}
(b) H
_{2}
SO
_{4 }
(c) H
_{3}
PO
_{4 }
(d) NaOH q (e)
EXAMPLE 19 Calculate equivalent mass of H
_{3}
PO
_{4 }
if, H
_{3}
PO
_{4}
+2NaOH
$\to $
Na
_{2}
HPO
_{4}
+2H
_{2}
O
Answer
1
Yatharth Patel
Subject: Chemistry
, asked on 22/5/18
Q.4. The vapour density of a gas is 11.2. Calculate the volume occupied by 11.2 g of the gas at NTP.
[
Hint:
Mol. wt. = 2
$\times $
VD]
(11.2 litres)
Answer
1
Yatharth Patel
Subject: Chemistry
, asked on 22/5/18
Plz solve q 7 nd q8
Q7. Find the total number fo nucleons present in 12 g of
^{12}
C atoms. (12 × 6.022 × 10
^{23}
)
Q8. Find (i) the total number of neutrons, and (ii) the total mass of neutrons in 7 mg of
^{14}
C. (Assume that the mass of a neutron = mass of a hydrogen atom)
[ Hint : 1
^{14}
C atom contains 8 neutrons.]
(24.088 ×10
^{20}
0.004 g)
Answer
1
Ghosh Brothers
Subject: Chemistry
, asked on 22/5/18
if 0.22 gram of a substance when vaporized displaced 45 cm cube of air measured over Water at 293 Kelvin and 755mm pressure and if vapour pressure of H2O is 17.4mm then a molecular weight of substance will be
Answer
1
Asheesh Kumar
Subject: Chemistry
, asked on 21/5/18
Please help me in this question -
Q.22. By the reaction of carbon and oxygen, a mixture of CO and
$C{O}_{2}$
is obtained What is the composition by mass of the mixture obtained when 20 g of
${O}_{2}$
reacts with 12 g of carbon?
Answer
1
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What are you looking for?

_{3}(b) H_{2}SO_{4 }(c) H_{3}PO_{4 }(d) NaOH q (e)EXAMPLE 19 Calculate equivalent mass of H

_{3}PO_{4 }if, H_{3}PO_{4}+2NaOH $\to $Na_{2}HPO_{4}+2H_{2}O[

Hint:Mol. wt. = 2$\times $VD](11.2 litres)

Q7. Find the total number fo nucleons present in 12 g of

^{12}C atoms. (12 × 6.022 × 10^{23})Q8. Find (i) the total number of neutrons, and (ii) the total mass of neutrons in 7 mg of

^{14}C. (Assume that the mass of a neutron = mass of a hydrogen atom)[ Hint : 1

^{14}C atom contains 8 neutrons.](24.088 ×10

^{20}0.004 g)Q.22. By the reaction of carbon and oxygen, a mixture of CO and $C{O}_{2}$ is obtained What is the composition by mass of the mixture obtained when 20 g of ${O}_{2}$ reacts with 12 g of carbon?