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Explain Electromagnetic radiation behaves both as particles (called photons) and as waves. Define Wavelength and frequency are related according to the equation
Define Where c is the speed of light (3.00x10^8 m/s). Explain the energy (E in joules) contained in one quantum of electromagnetic radiation is explain by the equation
E=h x v
where h is Planck's constant (6.626x10-34 J*s). Note that frequency has units of inverse seconds (s^-1), which are more commonly expressed as hertz (Hz).
Explain A microwave oven operates at 2.70 GHz. Define what is the wavelength of the radiation produced by this appliance?
Calcium carbide, CaC2, reacts with water to form acetylene. CaC2(s) + 2 H2O(l) C2H2(g) + Ca(OH)2(s) How many grams of water are needed to react with 473 g of calcium carbide?
an insecticide has the weight percents c55.6 h4.38 cl30.8 and o9.26. the approximate molar mass is 345 gmol. what is
calculate the density of hydrogen bromide gas in grams per liter at 733 mmhg and 46 degress celsius.
Alkenes: Reaction of (2Z)-3,4-dimethylpent-2-ene with Br2 and CCl4 Draw the product formed when the structure shown below undergoes reaction with Br2 in CCl4.
A 25.0-mL sample of 0.150 M butanoic acid is titrated with a 0.150 M NaOH solution. What is the pH before any base is added? The Ka of butanoic acid is 1.5 x 10-5.
write balanced equations to show how ethyl ethanoate can be made from a and acid halide and b an acid anhydride.briefly
The overall reaction 2Co3(aq) + 2Cl(aq)---> 2Co (aq) +Cl2(g) has the standard cell voltage Ecell=0.46V. Given that Cl2(g) +2e -->2Cl (aq), E=1.36V, calculate the standard reduction potential for the following half reaction at 25 degrees C, Co3 +e-..
Calculate the grams of iron ion present in a 1.25 mL of a solution that required 2.20mL 0f 0.002115 M KMnO4 in a titration going to a faint pink endpoint.
The rate constant for the first-order decomposition of N2O is 3.40 s to the -1. What is the half-life of the decomposition
What is the net redox reaction that occurs when Ag comes into contact with acidic K2Cr2O7? Which metal is the most reactive?
After the reaction was complete, nitric acid was added to dissolve the AgSO3 but not the AgSe. The Ag+ from the dissolved Ag2SeO3 and the excess reagent required 16.74mL of 0.01370 M KSCN in a Volhard titration. How many milligrms of Se were conta..
Is the world adiabatic or isothermal and why. Is the world at constant pressure or constant volume and why.
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