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A sample of beach sand contains sand particles of different colors, small pebbles, and also shells. Each component contains different metals and minerals. The pebbles and shells can easily be separated from the sand. Which term or terms could be used to describe this sample of sand?
If 0.208g of an unknown salt of oxalate ion requires 25mL of 0.02 M MnO4^- solution, calculate the molar mass and write the molecular formula of the unknown ( oxalare is the anion, what is the cation.).
The PCB concentration in the air inside a typical house is 400 ng/m3, and the ventilation rate is such that it takes, on average, 10 h to change the indoor air. If the indoor PCBs are coming from a leaking capacitor, how much leaks per year
Briefly describe the adverse effects caused by exposure to radiation. Include some specific exposure levels associated with these significant health effects.
For N2 1- draw the molecular orbital energy diagram showing electrons 2- give the molecular electron configuration 3- give the bond order for the molecule 4- predict if the molecule will be magnetic
Calculate the energy (joules) required to achieve the transition from the ground state to the first excited state for this system.
Determine the empirical formula of a hydrocarbon which has 92.24% C and 7.76% H. If 0.500 g of this hydrocarbon occupies 0.086 L at STP, determine the molecular weight of the compound.
When talking about Hydroxyquinone, BHT and BHA as radical inhibhitars, they are commonly additives to foods such as Crystal Light. (BHA:to help protect flavor). How do these molecules function as radical inhibitors. Show how these molecules interc..
If several large air bubbles entered the graduated cylinder filled with water when it was inverted into the water trough, what would the effect be on a plot of volume H2(g) vs. mass Mg?
compare the purity/identity of the samples from the extraction with the purity of the samples obtained from column chromatography.
Can someone please explain how to do this problem? I asked before but the past answers didn't really help A rectangular storage container with an open top is to have a volume of 50 cubic meters. The length of its base is twice the width.
a box contains 126000 red marbles and 885000 yelllow marbles. What sample size is required to reduce the sampling standard deviation of red marbles to 1.85%
what is the total number of grams of patassium chloride needed to saturate exactlye 300 grams of water at 10 degrees celcius?
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