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Question- In a discharge spectrum, Li displayed two lines 0.7nm apart. What wavelength of light would promote an electron to the higher excited state?
As much detail as probable is really appreciated
Calculate the molarity of a solution made by dissolving 0.750 grams of Na2SO4 in enough water to form exactly 850mL of solution. How many moles of KMnO4 are present in 250mL of a 0.0475 M solution
An aqueous solution of CaCl2 has a vapor pressure of 83.0mmHg at 50 C . The vapor pressure of pure water at this temperature is 92.6mmHg .
What mass of NaOH is needed to precipitate the Cd2+ ions from 44.0 mL of 0.500 M Cd(NO3)2 solution?
give some examples of the types of hazardous chemicals specifically oxidizers stored in homes such as those stored
Complete the reaction; write the equation as a balanced equation, complete ionic equation, and net ionic equation. Be sure to show the state of each compound.
calculate the composition in weight percent of an alloy that contains 90 kg of fe 20 kg of cr and 15 kg of ni. what is
Find the molcular heat capacity in units. Does the law hold up? Can you distinguish a metallic element from a nonmetal this way. Metalloids
What is the percent yield of calcium sulfate when .8750 L of aluminum sulfate and 17.2 g of calcium phosphate has an actual yield of 1.04
oxidation of nh3yields nitric oxide no and the reaction is represented by the equation 4nh3 5o2 --gt 4no 6h2o.
State what substances (if compounds, give their formulas) exist in each region. Label each substance in each region as solid, liquid, or gas.
on a beautiful summer day a group of friends have a picnic. of course there is a six pack of beverage on ice for
What is the molarity of a solution made by dissolving 74.8 g of strontium perchlorate in sufficient water
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