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Recent questions in Chemistry
Under which of the following two conditions percentage increase in volume of a gas will be more i) On increasing temp. from 100∘C to 110 ∘C, P is kept constant ii) On increasing temp from 100 K to 110
Pseudoanime
asked
Oct 2, 2024
by
Pseudoanime
8.3k
points
Chemistry
high-school
1
answer
1
vote
15.1k
views
For the reaction A+B+C→D+E, the initial concentration of reactant A determines the: A) Rate of the reaction B) Equilibrium constant K C) Activation energy D) Rate constant k
Darcy
asked
Oct 2, 2024
by
Darcy
7.5k
points
Chemistry
high-school
1
answer
2
votes
156k
views
A solution containing 50.00 mL of 0.1800 M NH3 (Kb = 1.77 x 10-5) You titrate this solution with 0.4100 M HCI. Determine the pH of the solution under the following conditions: (a) initially (b) after the
Millsp
asked
Oct 2, 2024
by
Millsp
8.5k
points
Chemistry
high-school
1
answer
1
vote
81.1k
views
There are four 250 mL beakers. One is filled with salt, one is filled with beans, another is filled with glass marbles, and the last one is filled with Styrofoam. Predict the beaker's order of density
Sarah Roberts
asked
Oct 2, 2024
by
Sarah Roberts
7.8k
points
Chemistry
high-school
1
answer
1
vote
91.0k
views
To make a 4 cup pot of green tea, one must heat the water to the boiling point at standard pressure. If the pot contains 680 grams of water, and the temperature at the tap is 20.0°C, how much heat must
M Karimi
asked
Oct 2, 2024
by
M Karimi
7.4k
points
Chemistry
college
1
answer
5
votes
189k
views
As if relates t te gas principle, what is the post-training period when the trained function has a higher performance capacity than prior to the training period?
Carl Sverre
asked
Oct 2, 2024
by
Carl Sverre
8.4k
points
Chemistry
high-school
1
answer
5
votes
152k
views
Urea, (NH₂)₂CO, is a product of metabolism of proteins. An aqueous solution is 34% urea by mass and has a density of 1.054 g/ml. Calculate the molarity of urea in this solution.
Tabbek
asked
Oct 2, 2024
by
Tabbek
8.8k
points
Chemistry
high-school
1
answer
2
votes
23.8k
views
What type of change is iron rusting? 1) kinetic change 2) biochemical change 3) physical change 4) chemical change
Baraa Aljabban
asked
Oct 2, 2024
by
Baraa Aljabban
8.3k
points
Chemistry
high-school
2
answers
3
votes
98.0k
views
Consider the reaction in chemical equilibrium. Coc12
Jack Guo
asked
Oct 2, 2024
by
Jack Guo
7.9k
points
Chemistry
college
1
answer
2
votes
203k
views
Suppose atmospheric pressure is 26.18 inches. Convert this to atm. When the ideal gas law iconstant 0.0821 atm L/ K mol is used, the pressure must be in atm.
Gabriele Muscas
asked
Oct 2, 2024
by
Gabriele Muscas
7.2k
points
Chemistry
high-school
1
answer
1
vote
182k
views
what is nitrogen containing compound is found in the urine of mammals and is widely used in fertilizer?
Aneesh
asked
Oct 2, 2024
by
Aneesh
7.9k
points
Chemistry
high-school
1
answer
3
votes
65.4k
views
A decrease in calcium ions below normal limits will
Stillinbeta
asked
Oct 2, 2024
by
Stillinbeta
8.6k
points
Chemistry
high-school
2
answers
3
votes
111k
views
Select the electrode that would be best suited for welding high sulphur steels in the flat position: a) E4924 b) E4914 c) E4927 d) E4918
Ben Aaronson
asked
Oct 2, 2024
by
Ben Aaronson
8.4k
points
Chemistry
high-school
1
answer
0
votes
152k
views
Cold air can hold more moisture than warm air. True False
Yusuf Syam
asked
Oct 2, 2024
by
Yusuf Syam
8.2k
points
Chemistry
college
1
answer
0
votes
224k
views
if a substance has a half-life of 4.50 years, how many years will it take for 50.0 g of the substance to be depleted to 0.0500 g?
Xiaojie
asked
Oct 2, 2024
by
Xiaojie
8.1k
points
Chemistry
high-school
1
answer
1
vote
88.5k
views
How many moles of butane on complete combustion gives 18 g of water?
Gissel
asked
Oct 2, 2024
by
Gissel
7.6k
points
Chemistry
high-school
2
answers
3
votes
87.9k
views
A liquid does not wet the sides of a solid , if the angle of contact is a) 0° b) 120° c) 45° d) 90°
Hadas
asked
Oct 2, 2024
by
Hadas
7.7k
points
Chemistry
college
1
answer
5
votes
210k
views
How do the number of collisions affect the size of the balloon?
Torben Schramme
asked
Oct 2, 2024
by
Torben Schramme
8.7k
points
Chemistry
college
1
answer
0
votes
202k
views
A 320-ml flask at 373 K and 600 torr contains 1.20 g of a gaseous compound having an empirical formula of CHCl. Determine the compound’s molecular formula. a) C₂H₂Cl₂ b) C₃H₃Cl₃ c) C₄H₄Cl₄ d) C₅H₅Cl₅
Tanzil Khan
asked
Oct 2, 2024
by
Tanzil Khan
8.1k
points
Chemistry
high-school
1
answer
5
votes
6.9k
views
For the following reaction at equilibrium SO3(g) + NO(g) ⇌ SO2(g) + NO2(g) It is found that [SO3] = 1.85 M and [NO] = 1.20 M. Calculate the equilibrium constant for the reaction knowing that the initial
James Vickers
asked
Oct 2, 2024
by
James Vickers
7.7k
points
Chemistry
college
1
answer
1
vote
223k
views
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