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Inorganic Chemistry
freezing point of pure benzene is 5.4 centigrade.when we solve 1.15gram of nephathaline in 100gram of benzene.the freezing point of the solution wil be 4.95 centigrade. cryoscopic constant of benzene is 5.12,what will be the molecular weight of benzene.
Inorganic Chemistry
mass of blood heamoglobin is 6.86 *104(mean 6.86 multiply by ten reset to the power four).which amount of heamoglobin will solve in 100 ml of solution that its osmotic pressure will reach to 6.15 torr.if the tempreture is25 centigrade.
Inorganic Chemistry
How many atoms (approximately) are there is 0.5 moles of water? Assume Avagadro's number is 6.02 * 10^23.
Inorganic Chemistry
4.0 L of nitrogen at a pressure of 400 kN m^(-2) and 1.0L of argon at pressure of 200 kNm^(-2 ) are transferred into a 2.0L container . calculate the partial pressure of nitrogen and argon
Inorganic Chemistry
During a exothermic reaction, if my experimented value of deltaH is -690kJ/mol. And the reported value is supposed to be -601.7kJ/mol. Does this mean that it is due to heat loss to the surroundings?
Inorganic Chemistry
If the LEL for hydrogen = 4% and the UEL = 74% what mass of hydrogen was contained in the tin when it exploded? (conditions at the time of the experiment were 23oC and 750 mmHg)
Inorganic Chemistry
In the year 2007, an estimated amount of 31 billion tons of carbon dioxide (CO2) was emitted worldwide due to fossil fuel combustion and cement production. Express this mass of CO2 in grams without exponential notation, using an appropriate metric prefix.
Inorganic Chemistry
A colorless, odorless and tasteless gas, which is neutral to litmus paper and 14.4 times less dense than air is
Inorganic Chemistry
Chemical formula of boron oxide is B2O3. The valence of Boron in this compound is ?
Inorganic Chemistry
If the copper is drawn into wire whose diameter is 8.00mm , how many feet of copper can be obtained from the ingot? The density of copper is 8.94 g/cm3.
(Assume that the wire is a cylinder whose volume is V=πr2h, where r is its radius and h is its height or length.)
(Assume that the wire is a cylinder whose volume is V=πr2h, where r is its radius and h is its height or length.)
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#339914 on Dec 2023
#339914 on Dec 2023