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How do historians know that the people in the kingdoms of Ghana, Mali, and Songhai had common ancestors who migrated to East Africa by about 500B.C.E.?
When a 3.00-g sample of KCl is dissolved in water in a calorimeter that has a total heat capacity of 2.472 kJ·K-1, the temperature decreases by 0.280 K. Calculate the molar heat of solution o
Discuss the condition of Europe after World War II. What was the impact of these conditions on the countries’ citizens? As you do so, take care to select one specific country within Europe to us
Coulomb's Law describes the force between two charged objects, What is the magnitude and direction of the electrical force on object 2 due to Object 1
Can someone please show me a mechanism for a Diels-Alder Green Organic Phototchemistry reaction mechanism? We used 9-(hydroxymethyl) anthracene, deionized water, and N-methylmaleimide as the reagent
If all the energy obtained from burning 1.29 pounds of propane (fuel value is 11.09 kcal/g) is used to heat 124.5 kg of water at an initial temperature of 21.5 °C, what is the final temperature
A molecule of DNA (deoxyribonucleic acid) is 2.28 µm long, Determine the effective spring constant of the molecule
what is his historical legacy in the Greek world: did his actions bring a destructive end to Greek values or did he create a lasting legacy in which Greek aesthetics and political values inform wester
Have to write 250 word paper on technology in the Middle Ages and how it affected the lives of the people. This has to be in your own words not off internet
An environmental engineer analyzes a sample of air contaminated with sulfur dioxide. To a 500m mL sample of air at 700 torr and 38 degrees celsius, she adds 20.00 mL of 0.01017 M aqueous iodine, whi
What is soma/Homa and what are the main ingradients of it ? Which countries are doing research on that? What is the significance of it related to Rome ?
Three thin uniformly charged shells A, B and C, with radii R, 2R , 3R respectively are placed one inside the other, What is the electric potential at radius 2R
Explain what is meant by E-Waste and why it is a growing problem? How Different countries are addressing the issue?
in the electrolysis of aqueous solution of Na2SO4, what reactions occur at the anode and the cathode. explain
How would you explain the large and expanding domestic trade in slaves between 1800 and 1860? What combination of factors produced this result?
What quantity of heat is required to vaporize 0.500 mL of Hg at 357 degrees celsius its normal boiling point. The density of Hg is 13.6 g/mL
The pressure of the He at 25 degrees celsius is 145 mmHg. The bulb is then heated to 325 degrees celsius and all the (NH4)2 S decomposes to form NH3 and H2S, with a resulting total gas pressure of 8
the two main branches of islam are shia and sunni. the division between these branches can be traced back to muhammad's death. explain what happened.
Calculate the volume of 3 M NH3 that you need to use to react stoichiometrically with the quantity of acetylacetone given the list of reagents
The two hot-air balloons in the drawing are 48.2m and 61.0 m above the ground, What is the horizontal distance x between the two balloons
Compare the French and British model of decolonization between 1945 and 1965. Pick one specific example of decolonization for each empire.
The textbook asserts that World War 1 represented the triumph of nationalism. In what ways did nationalism contribute to the origins of the war, its outbreak and its course? How did nationalism affect
Present and detailed description of the artifact and analze in details, tell how the artifact relates to the value and the belief of the culture? Investigate and evaluate the deep cultural roots of yo
A highway is to be built between tow towns, one of which lies 30.7 km south and 72.2 km west of the othe, What is the shortest lenght of highway that can be bult between the tow towns
Both Egypt and Japan, to different degrees and at different times, attempted to modernized their states. How can we account for the failure of one and the success of the other?