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What is the wavelength of an electron traveling with a velocity of 7.0 times 10 to the 3rd power?
An archeologist finds a huge monolith in the desert. In order to estimate the weight of this object; he estimates the dimensions of the monolith and removes some chips from the rock with his hammer.
If it takes 1250 J to raise the temperature of 33.5g of a substance 59 deg C what is the specific heat of the substance
How many moles of O2 are needed to consume 0.52 mol of Mg in the following unbalanced reaction? Mg + O2-> MgO
how many grams of lead chromate form when a 1.00g sample of Pb(NO3)2 is added to 25.0 mL of 1.00 M K2CrO4 solution
Borane forms complexes with sulfides and amines. Draw a suitable structure to represent the complex formed between BH3 and dimethyl sulfide
How many milliliters of 4.21 M NaOH are needed to completely neutralize 76.9 mL of 0.340 M H3PO4? The reaction is 3NaOH(aq) + H3PO4(aq) → Na3PO4(aq) + 3H2O(l)
Metallic copper is formed when aluminum reacts with copper(II) sulfate. How many grams of metallic copper can be obtained when 54.0 g of Al react with 319 g of CuSO4?
A 20.0 mL sample of gastric juice was taken from a patient suspected of having hypochloridia (low stomach acid). The sample was taken several hours after a meal so there was no ingested food or drink
A 4.80 g nugget of pure gold absorbed 276 J of heat. What was the final temperature of the gold if the initial temperature was 26.0°C?
What are the methods of Atomic absorption to detect unknown solution
Calculate the concentration of solution containing one mole of phophate per litre
How much would the beaker and its content weigh if it was completely filled with mercury? The density of mercury is d = 13.5 g/mL ? = g
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