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Consider three force vectors F~ 1 with magnitude 52 N and direction 125? , F~ 2 with magnitude 92 N and direction 193? , and F~ 3 with magnitude 71 N and direction 83? . All direction angles θ are measured from the positive x axis: counter-clockwise for θ > 0 and clockwise for θ < 0. What is the magnitude of the resultant vector kF~ k, where F~ = F~ 1 + F~ 2 + F~ 3 ? Answer in units of N.
magnetite was found to contain 2.5698 g of iron and 0.9816 g oxygen. What is the empirical formula for this oxide of iron?
On-ground students: share your resume with another classmate to identify three strengths and three recommendations for improvement. Then, share what you each suggest.
What was the volume occupied by the sample under the new conditions - Determine what volume of 3.00M HCl in liters is required to react
Assume that the estimates of the standard deviation for the mean mass of a series of three measurements, a serious of six measurements, and a series of nine measurements were identical.
If 329 g water at 65.7°C loses 9730 J of heat, what is the final temperature of the water?
The methylamine hydrochloride dissociates completely in water to form methylammonium ion (CH3NH3+) and chloride ion.
Draw additional molecules of sulfanilamide and hypothesize the intermolecular interactions that are most important for providing a stable and selective crystal structure
sulfuric acid h2so4 is produced from water vapor sulfur dioxide and oxygen gas. write a balanced equation then
Problem- Liquid sodium is being considered as an engine coolant. How many grams of liquid sodium (minimum) are needed to absorb 8.90 MJ of energy (in the form of heat) if the temperature of the sodium is not to increase by more than 10.0 °C? Use C..
Problem- For the following processes, state whether each of the thermodynamic quantities q, w, delta U, and delta H is greater than, equal to, or less than zero for the system described. Explain your answers briefly. Note: adiabatic means no heat ..
Acetylene gas, , burns in oxygen to produce carbon dioxide and water. If 60.4 g of CO2 are produced when 22.62 c2h2 react with sufficient oxygen, what is the percent yield for the reaction
when nacl is added to a solution of agno3 a white precipitate of agcl forms. if concentrated ammonia nh3 is added to
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