Oxidation of alcohols involves adding oxygen molecules and removing hydrogen from the molecule. An example is ethanol (C2H5OH) being oxidized to acetaldehyde (CH3CHO) and further on to acetic acid (CH3COOH). Usual agents are dichromate, permanganate or bleach, and reaction with ethanol will proceed...
The equation is AgNO3 + NaCl gives NaNO3 + AgCl.
This equation is balanced, so the next step is to figure out the moles of reactants from the weights given. Using that information, you can determine that you have more NaCl (twice the moles) than AgCl, indicating that AgCl will be consumed...
Red light has a wavelength close to 700nm, and blue is close to 400nm. Wavelength is related to frequency by the equation c (speed of light) = wavelength * frequency. So red has lower frequency and lower energy than blue light.
Energy = h (Planck's constant) * frequency.
Depending on the concentration, maybe. Sodium overwhelms the flame with its golden color. Potassium is usually a light violet color that is difficult to see in low concentrations.
Red can be formed using Calcium (brick red) or Strontium (crimson). Green is due to copper, and violet is from potassium. This is part of the flame test for ionic compounds. In the flame, there is enough energy for electrons of metals to move to higher energy levels. When they jump back down from...
Electrons are arranged in shells, which are like unevenly spaced steps, each step having an energy value (higher the step, higher the energy). They are free to move in orbitals within shells, so long as they have the energy to do so. They are also free to jump to the next higher energy step. When...
Deuterium has 1 electron, 1 proton and 1 neutron. Helium has 2 of each. He is double the mass of D.
The reaction is as follows:
PCl5 (s) PCl3 (l) + Cl2 (g)
Initial 4 0 0
The atomic weight of hydrogen is 1.008 amu, and we know that it has one electron and one proton. Electrons are much smaller than protons, so the inference is that the proton weight must be closer to 1 amu than the electron.
We can re-write the question as
1/(ax - b)1/2 - ((ax - b)1/2)/b and then perform subtraction using the LCM of b(ax-b)1/2. We then get the fraction
(b - ax +b)/ (b(ax-b)1/2) or (2b - ax) / (b(ax-b)1/2). Hope this helps.
Magnesium has the atomic number 12. There are 12 electrons in the outermost shell. Mg atom would look like this Mg: (if we ignore the full shells). This molecule is very reactive, as it wants to reach a full shell, and it can do that by losing those two electrons.
Sometimes the answer is not well defined, like in this case. This problem may be solved by the quadratic method, like Kirill did, or by completing the square for y2 - y/x, by adding and subtracting 1/4x2. The problem then reduces to
(y2 - y/x + 1/4x2) -16 - 1/4x2 = 0, or
This problem is a variant on y = mx + c. You have P = 5.9t – 11,706, with y being P, m = 5.9, x = t and c = -11706.
To evaluate P for t = 1985 and 2000, substitute these values in the equation to get the values of P (in percent). The values are ~ 5 and 94.
One way to visualize the function is to assume values for x and see the values of y that are derived.
The function is y2 = 3x2 -4x -8.
For x = 0, y2 = -8. Here the answer is not a real number.
If x = 1, y2 = 3-4-8 = -9; again not a real number.
If y varies directly as x, then y must be a function of x, or y = a * x. Looking at the values of y (12) and x (4), and putting them in the equation y = ax, we get 12 =a*4 , or a = 3. hence y = 3x must be the the equation that relates x and y.
Using Henry's Law, we get the partial pressure of the gas above the solution as
p = 0.2 (atm M-1) * 0.1 (g) / 106.2 (g/mole) * 1/1 (L) , since total volume of liquid is 1L.
This value of p is transferred to the gas equation PV = (g/M)RT to determine the weight g of xylene in the headspace...
The problem is x2 - 6x -27 = 0
The factors of this can be expressed as (x + a)*(x + b) = 0
There are two values of x because this is a quadratic equation. If the factors are expanded, we get the following:
x2 + (a + b)x + a*b = 0.
Applying this into...
The answer (n) is 25/16 - 4 = -39/16. Hope that helps you with other questions like this.