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1.An observer fails to check the bubble, and it is off two divisions on a 250 ft sight. What error results for a 20"bubble?
2.Balance the following acid base neutralization reaction. Identifythe acid and the number of equivalents per mole. Identify the baseand the number of equivalents per mole.
FeCl3 reacts with NaHCO3
Find the mass of barium metal (in grams) that must react with O2 to produce enough barium oxide to prepare 1.2L of a 0.11M solution of OH^- Thanks in advance.
calculate the amount of heat transfered when 24.0 g of ch3oh decompose at constant pressure. delta h is 126.4
write the condensed electron configurations for the cr3 atom. express your answer in condensed form in order of
The atomic mass of element X is 33.42 amu. A 15.05-g sample of X combines with 79.32 g of another element Y to form a compound XY. Calculate the atomic mass of Y.
Which one of the following would slow the rate of increase of atmospheric CO2? Building and operating more coal-fired power plants
A 25.0-mL sample of 0.35 M HCOOH is titrated with 0.20 M KOH. What is the pH of the solution after 25.0 mL of KOH has been added to the acid? Ka = 1.77 × 10-4
Suppose a student is measuring the optical rotation of a 1 M sample of (S)-(-)- Limonene. The path length is 13cm. What optical rotation should the student expect to measure?
The heat capacity of the coffee cup (without the water) is 9.2 J/K. If the final temperature of the system is 31.1°C, what is the specific heat capacity of the alloy? (c of water is 4.184 J/g×K)
what is the mass in grams of a single atom of Ru. The answer is supposed to be in scientific notation as in blank time ten^ blank. I kinda have an idea but not sure
if you have 370 ml of water at 25 degrees Celcius and 130mL of water at 95 degrees C. what is the final temperatue of the mixture?
Calculate the mass defect in Fe-56 if the mass of an Fe-56 nucleus is 55.921 amu. The mass of a proton is 1.00728 amu and the mass of a neutron is 1.008665 amu.
1) there is a 621mL sample of O2 at 25 degree C. What is the volume at -25 degree C? 2) there are 5.22L of N2 at 13 degree C. What temperature is needed to expand the gas to 6.22L
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