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A weather balloon with a 2-meter diameter at ambient temperature holds 525 grams of helium. What type of electronic probe could be used to determine the pressure inside the balloon?
draw the molecule by placing atoms on a grid and connect with bonds for when the cyclopentane is exposed to Br2 in presence of light.
calculate the molarity (M) of the solution when water is added to prepare each of the following: a)25.0 mL of a 18.0 M HCl solution is diuted to 500 mL. b)50.0 mL of a 1.50 M NaCl solution is diluted to 125 mL. c)4.50 mL of a 8.50 M KOH solution i..
Considering the two resonance structures of the conjugate base of saccharin, which atom (N or O) bears more of the negative charge. explain why.
Ammonia is made industrially by reacting nitrogen and hydrogen under pressure, at high temperature, and in the presence of a catalyst. The equation is N2(g)+3H2(g)---->2NH3(g). If 4.0mol of H2 react, how many moles of NH3 will be produced.
The concentration of Mg2+ in seawater is 0.052 M. At what pH will 92% of the Mg2 be precipitated as the hydroxide salt? [Ksp for Mg(OH)2 = 8.9* 10-12.]
why are there variations in the weight of acid consumed for the same brand of antacid?
a solution is prepared by mixing 55.0 ml of 0.015 m bacl2 and 150. ml of 0.045 m k2so4. what are the concentrations of
Ammonia gas decomposes according to the equation: If 15.0 L of nitrogen is formed at STP, how many liters of hydrogen will be produced (also measured at STP)
How does C 10 H 12 O 2 eugenol combine with Br bromine in CCl 4 carbon tetrachloride and concentrated H 2 SOP 4 at the temperature of 20 degrees Celsius?
There is a peak in the middle of the graph with 0.40 for absorbance and 525 for wavelength. What is the wavelength of maximum absorbance?
A reaction that is used to propel rockets is N2O4(l) + 2N2H4(l) --> 3N2(g) + 4H2O(g). This reaction has the advantage that neither product is toxic, so no dangerous pollution is released.
The air pollutant NO is produced in automobile engines because of the high-temperature reaction below. If the initial concentrations of N2 and O2 at 1000 K are both 1 M
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