10/06/19

I have this question that ask to prove law of multiple proprtion.
Consider 100.0-g samples of two different compounds consisting only of carbon and oxygen. One compound contains 25.9 g of carbon, and the other has 41.1 g of carbon. How can these data support the... more
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09/15/19

Density of piece of metal
A piece of metal weighing 45.450 g was submerged in a graduated cylinder containing 15.0 ML of water after it was submerged the volume rose to the level of 33.5 ML what is the density of the piece... more
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09/15/19

A 5.00 mol sample of solid A was placed in a sealed 1.00 L container and allowed to decompose into gaseous B and C.

The concentration of B steadily increased until it reached 1.40 M, where it remained constant.A(s)↽−−⇀B(g)+C(g) Then, the container volume was doubled and equilibrium was re‑established. How many... more
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09/11/19

Using the Arrhenius Equation to find the temperature
A certain reaction has an activation energy of 34.31 kJ/mol.  At what Kelvin temperature will the reaction proceed 5.50 times faster than it did at 311k?
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09/11/19

Dalton's Law of Partial Pressures
Two gases are contained in gas bulbs connected by a valve. Gas A is present in a 1 L bulb at a pressure of 818 torr. Gas B exerts a pressure 328 torr in a 1 liter bulb. The valve is opened and... more
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09/08/19

The mass of an electron is 9.11×10−31 kg. If the de Broglie wavelength for an electron in a hydrogen atom is 3.31×10−10 m, how fast is the electron moving relative to the speed of light?
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09/05/19

how much heat is required to raise the temperature of 475 grams of solid aluminum from room temperature (295 K) to liquid aluminum at 1050K? aluminum melts at 933.47 K
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09/03/19

What is the volume (in cubic centimeters) of an aspirin tablet weighing 2.9×102 mg ?
Aspirin has a density of 1.40 g/cm3
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04/03/19

General Chemistry
From the reaction, which is the substance undergoing oxidation?Fe + H2SO4 → FeSO4 + H2
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04/02/19

How many grams of sodium iodide must be used to produce 43.0 g of iodine?

2NaI + Cl2 ⟶I2 + 2NaClSo I've been struggling with this question. I wrote out the conversion factor write but every time I enter my the answer I get from my calculator it tells me that I am wrong.... more
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