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True or False
In 1666 Issac Newton discovered that white light is composed of all the colors of a rainbow.
The colors of the visible spectrum are red, orange, yellow, green, blue and violet.
In 1861 James Maxwell defined light as an oscillating electromagnetic wave.
The photoelectric effect indicates that light is made up of waves.
Thin film diffraction indicates that light is made of a stream of photons.
The best model that science has for the nature of light is that light consists of localized wave packets.
The wavelength is defined as the vertical peak to peak distance.
Nothing travels faster than light does in a vacuum.
when .192 g of phosphorus reacts with oxygen .440 g of a white oxide is formed. how many grams of oxygen reacted with
For a certain reaction, = 8.38×10?4 and 9.24×10?5 . Calculate the value of the reverse rate constant, , given that the reverse reaction is of the same molecularity as the forward reaction.
How many milliliters of a 15.0% by mass solution KOH(aq) (d=1.14g/mL) are required to produce 26.0L of a solution with pH=11.50? express answer using 2 significant figures.
Calculate the number of moles of O2 required to react with phosphorus to produce 5.50 g of P4O6. (Molecular mass P4O6 = 219.9 g/mol.)
The hydrogen phosphate ion is the conjugate acid of the phosphate ion. State the balanced chemical equation and the Ka expression for the dissociation of aqueous hydrogen phosphate.
After mixing 2.00g of H2S with 2.00g of NaOH, a 92.0% yield of sodium sulfide is obtained. Calculate the experimental yield in grams obtained in that reaction
0.80g of hydrogen chloride is dissolved in water to make 2.5L of solution. What is the pH of the resulting hydrochloric acid solution?
how many photons strike the leaf every second? Assume three significant figures and an average wavelength of 504 nm for solar radiation.
Question- Beryllium fluoride (BeF3) is a "flat" molecule with the beryllium atom at its center. Sketch the molecule, showing the hybrid orbitals and the fluroide atoms. What hybrid orbitals would you expect to be present in BeF3
How many grams of hydroxyapatite will dissolve in 1.00 L of H2O? Ksp= 2.34*10^-59; Molar mass=502.3 g/mol Ca5(PO)3OH = 5Ca^2+ +3 PO4^3- +OH^-
This time the liberated EDTA required 15.47 mL of standard 0.020 65 M Mn2+. Calculate the number of miligrams of each metal (Mn2+, Zn2+, and Mg 2+) in the 25.00 mL sample of unknown.
show the calculation for the percent yield of K3[Fe(C2O4)3].3H2O using your actual yield and the theoretical yield
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