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Question- Calculate the energy of a photon emitted when an electron in a hydrogen atom undergoes a transition from n = 4 to n = 1.
Please answer only if you are 100% confident
Calculate the pH of a solution formed by mixing 65-mL of 0.22M NaHCO3 with 75-mL of 0.15M Na2CO3.
the volume of a catalyst in the shape of a sphere is 10.0 centimeter cubed. calculate the surface area. if the sphere
the same student mixed the crystalline product with ethanolic 1% FeCl3 solution and obtained a colored solution. briefly explain what might have caused this result.
Determine the energy of 1.70 of photons for each of the following kinds of light. (Assume three significant figures.)
Determine what amount of heat is required to increase the temperature of sixty grams of ethylene glycol from 15.1 degree Celsius to 40.3 degree Celsius?
Draw resonance structures to show in which position 4-methylacetanilide will undergo nitration.
The question is to write a mechanism for the reaction of acetophenone with an excess of ethyl magnesium bromide in the presence of hydrochloric acid.
A Why is it an important concept that atoms generally appear in whole number molar ratios to each other in chemical compounds? What does this tell us about the nature of matter?
Calculate the mass of KHC8H4O4 ( molar mass 204.44 g/ mol) that reacts with 15 mL of the NaOH solu-tion in Part A. 3. NaOHsolu-tioninPartA.3.
a cylinder with a piston pressing down with a constant pressure is filled with 2.20 moles of a gas n1 and its volume is
What are advantages of Attenuated Total Reflectance (ATR) sampling in IR over Beam Through Sample sampling. What region of an IR Spectrum (give a range in wavenumbers) is most useful for distinguising between isomers that contain the same functiona..
Find the heat transferred (in kJ) when 5.50 L of ethylene glycol (d = 1.11 g/mL, see Table 6.2 for c) in a car radiator cools from 37.7°C to 23.0°C.
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