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What are some examples of 7a elements? How many valence electrons do these elements have? Are these elements considered reactive? What are some practical uses of some group 7a elements?
What other elements have electron configurations similar to hydrogen?
The most common experimental technique to perform elemental analysis is combustion analysis, where a sample is burned in a large excess of oxygen and the combustion products are trapped in a variety of ways. A 99.99% pure,0.4949g sample containing on..
Write a truth tables and explain how each one of these two circuit work
Determine the effective mass of the two holes for both materials. Which one has larger effective mass? What determines this?
Communication is an area where breakdowns often occur. This can lead to project failure or delay. Explain why you think this is such a significant area of concern
Prevention of Errors in Healthcare is a concern for many healthcare systems and is an area that is being aggressively being addressed. However, there are instances when errors are unavoidable. Take some time to review the quote below, what are your..
Life at the beginning of the twenty-first century is very different from what life was like at the beginning of the twentieth century. Significant changes have occurred in almost every area of life; including space travel, medicine, world politics, c..
In Quarter 2 of the simulation, one of your goals is to seek employee insights to improve firm performance. In Quarter 3 of the simulation you will be looking at the results of the first Employee Survey. As you grow your company in the marketplace si..
1. The traditional newspaper industry is in a declining phase and much had been written on how newspapers should reinvent themselves. How are various newspaper organizations addressing this challenge? What is the best next step in the newspaper indus..
Key Success Factors. In a three to four page paper (excluding cover and reference pages), conduct a K.S.F. analysis by addressing the following:Identify the key success factors necessary for success in the industry in which your venture would be comp..
The total mass of solid unknown dissolved in the sample was 0.1200 g. If the sample were dissolved to a final volume of 100.0 mL, and a 25.00 mL sample of the solution required 36.32 mL of EDTA solution, find the mass percent of CaCO3 that was pre..
Use Coulomb's law to calculate the ionization energy in kJ/mol of an atom composed of a proton and an electron separated by 203.00 pm
9.2 l of liquid water at 25c is combined with 1.0 kg of liquid h2so4 at 25c. estimate the temperature of the sulfuric
Addition of hydrogen chloride (HCl) to 1-isopropenyl-1-methylcyclopentane yields 1-chloro-1, 2, 2-trymethylcyclohexane. Intend a mechanism for the reaction. Demonstrate complete structures of the intermediates as well as use curved arrows to indi..
write the formula of the reactants and products-including the symbols for the state- s l g aq- then balance the
Consider the following reaction at constant P. Use the information here to determine the value of Delta-Ssurr at 398 K. Predict whether or not this reaction will be spontaneous at this temperature
sodium azide a compound containing only sodium na and nitrogen n is used as a propellant for inflating airbags in some
Sketch two pH curves, one for the titration of a weak acid with a strong base and one for a strong acid with a strong base. How are they similiar? How are they different
A container of Methane gas initialy at 70.0 atm holds a volume of 350 litres at a temp. of 30.0C. What is mass of methane in grams
Compute the molar mass of the unknown gas. Remember that the faster the rate of effusion, the shorter the time essential for effusion of 1.0 L; that is, rate and time are inversely proportional.
Problem- Which quantity or quantities must always be the same on both sides of a chemical equation? Check all that apply. Check all that apply. The number of molecules of each kind
If the lead level in some drinking water is 15pbb how many ml of the water would one have to drink in order to ingest 1 gram of lead
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