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Explain A small knife weapon made from an unknown metal is found at the crime scene. To help in determining what the metal is, the specific heat is calculated and compared with the attached chart listing specific heats of the elements.
given the following equation 2c4h1013o28co210h2owhat mass of water forms if 6.5 l of c4h10g 0.500 g of n2g and 0.410 g
A substance has a solubility of 350 ppm. How many grams of the substance are present in 1.0 L of a saturated solution.
Hydrchloric acid is usually purchased in a concentrated form that is 37.0% HCL by mass and has a density of 1.20g/ml. How much concentrated solution would you take to prepare 2.85L of 0.410M HCl by mixing with water
The half -life of 14C is 5730 years. A sample taken for radiocarbon dating was found to contain 56 percent of its original 14C. What was the age of the sample? (*Hint: The decay follows first order kinetics).
In a 0.10 M solution of a weak diprotic acid H2A the species present in highest concentration (besides water) would be
Chemicals found in water include a minerals such as a.calcium, silica and magnesium b. lead c.arsenic d.all of the above
A 47 kg sample of water absorbs 348 kJ of heat. If the water was initially at 28.7 C what is its final temperature.
Chlorine is more reactive than bromine. Bromine can be prepared by adding chlorine to an aqueous solution of sodium bromide. The reaction is represented by the equation 2 NaBr(aq) + Cl2(g) = Br2(l) + 2 NaCl(aq)
How many grams of aspirin were lost in the washing process you used to purify your product, assume you used 50 ml of water for washing
write balanced equations to show how ethyl ethanoate can be made from a and acid halide and b an acid anhydride.briefly
1.how enzymes work draw and label a reaction coordinate diagram for an uncatalyzed reaction s p and the same reaction
react with an excess of H3PO4, how many grams of water and how many grams of Ca3(PO4)2 will have on the products side? Also, what type of reaction is it?
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