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Shresht Shrikant Shettigar
Subject: Chemistry
, asked 2 weeks ago
An electron is moving with a kinetic energy of 4.55 * 10 ^ - 25 Calculate the de Broglie wavelength for it. (Mass of electron =9.1*10^ -31 kg; Planck's constant (h)=6.6*10^ -34 kgm^ -2 s^ -1 )
Answer
1
Shresht Shrikant Shettigar
Subject: Chemistry
, asked 2 weeks ago
Methane burns in oxygen to form carbon dioxide and water. Write the balanced chemical equation for this reaction. From the above reaction, calculate the mass of oxygen required for burning 1.6 g of methane. (C = 12, O = 16, H = 1)
Answer
1
Akshata Sagar Nagarkar
Subject: Chemistry
, asked 2 weeks ago
Which is the correct option
Answer
1
Akshata Sagar Nagarkar
Subject: Chemistry
, asked 2 weeks ago
Stepwise answer please
Answer
1
Shresht Shrikant Shettigar
Subject: Chemistry
, asked 2 weeks, 1 day ago
Find the limiting and excess reagent in the following cases :-
A. C( 50g)+ O2( 20g ) ------ > Co2
B. PCL3 ( 20g) + Cl2 (100g ) ----> PCL3
Answer
1
Shresht Shrikant Shettigar
Subject: Chemistry
, asked 2 weeks, 1 day ago
Find the limiting and excess reagent in the following cases :-
A. N2 ( 100g ) + 3h2( 100g) ------> 2NH3
B. C2H2 ( 125g) + H2 ( 50g ) ------> C2H4
Answer
1
Shresht Shrikant Shettigar
Subject: Chemistry
, asked 2 weeks, 1 day ago
Find the limiting and excess reagent in the following cases :-
A. 2KCL+3O2 ----- 2KCLO3
75g 150g
B. CH4+2o2 ------ Co2+2h2o
90g 50g
Answer
1
Neha Jain
Subject: Chemistry
, asked 2 weeks, 1 day ago
The radius of third orbit in He
+
ion is -----------
(Å)
Answer
1
Neha Jain
Subject: Chemistry
, asked 2 weeks, 1 day ago
Fill in the blanks with appropriate answers.
The number of OH
-
ions required to neutralise 150Oml of 0.001 M H
3
PO
4
is
Answer
1
Neha Jain
Subject: Chemistry
, asked 2 weeks, 1 day ago
A one litre of mixture contains 10 gm of NaOH, 13.25 gm of Na
2
CO
3
and 10.5 gms
of NaHCO
3
. 50 mL of this mixture is titrated against 0.5M H
2
SO
4
. Find the volume of
H
2
SO
4
used for titration if:
The mixture is titrated using methyl orange from beginning.
Answer
1
Ananya Choudhury
Subject: Chemistry
, asked 2 weeks, 1 day ago
how did he get the pk value share
Answer
1
Aditi Sharma
Subject: Chemistry
, asked 2 weeks, 2 days ago
Electromagnetic radiation having wavelength 420 Angstorm are subjected to work function 24eV. What will be the velocity of photoelectrons with max kinetic energy?
Answer
1
Abhay Singh
Subject: Chemistry
, asked 2 weeks, 2 days ago
Answer the question.
Answer
1
Neha Jain
Subject: Chemistry
, asked 2 weeks, 2 days ago
Note: In the following question No. 8, 1 mark will be awarded for correct
answer and (1/2) mark will be deducted for every wrong answer.
8. (b) Fill in the blanks with the appropriate answers
Among the given oxides of metals : Sro, K
2
0, MgO, NiO, the strongest base -------------
Answer
1
Neha Jain
Subject: Chemistry
, asked 2 weeks, 2 days ago
Note: In the following question No. 8, 1 mark will be awarded for correct
answer and (1/2) mark will be deducted for every wrong answer.
8.(a) Arrange as directed.
Increasing electronegativity Si, N, P, C
Answer
2
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What are you looking for?
A. C( 50g)+ O2( 20g ) ------ > Co2
B. PCL3 ( 20g) + Cl2 (100g ) ----> PCL3
A. N2 ( 100g ) + 3h2( 100g) ------> 2NH3
B. C2H2 ( 125g) + H2 ( 50g ) ------> C2H4
A. 2KCL+3O2 ----- 2KCLO3
75g 150g
B. CH4+2o2 ------ Co2+2h2o
90g 50g
The number of OH- ions required to neutralise 150Oml of 0.001 M H3PO4 is
of NaHCO3. 50 mL of this mixture is titrated against 0.5M H2SO4. Find the volume of
H2SO4 used for titration if:
The mixture is titrated using methyl orange from beginning.
answer and (1/2) mark will be deducted for every wrong answer.
8. (b) Fill in the blanks with the appropriate answers
Among the given oxides of metals : Sro, K20, MgO, NiO, the strongest base -------------
answer and (1/2) mark will be deducted for every wrong answer.
8.(a) Arrange as directed.
Increasing electronegativity Si, N, P, C