Water Hardness Lab free essay sample

Solubility of Calcium Carbonate in ppm: 114. 80 ppm Solubility of Calcium Carbonate calculated using Ksp: 7. 05 ppm There is a big difference between two numbers because of two possible reasons: _ The filtration process possibly went not as accurate as It should. _ I heated the water while dissolving CaCO3, and that made it more soluble. _ The errors came from the titration, due to the fact that the color change of the solution is not easy to define. (Purple to blue) I might have put too much titrant into the solution, and that would cause a difference. 2. Water hardness is a water quality that demonstrates the quantity of minerals in certain water sample. The bigger the amount of minerals present, the harder that water will be. Minerals responsible for making water hard are primarily: Calcium and Magnesium. These minerals usually exist in form of salts in the ground, which are soluble in water/acid. Therefore, the salts react with water or rain (slightly acidic), the salt dissolve and the ions are now present in the water. We will write a custom essay sample on Water Hardness Lab or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page It’s to say the minerals are carried to the water from the ground. PPM is parts per million. 3. As in this lab, the endpoint should also be the equivalent point, so when we reached the endpoint, it means the titration is finished. 4. Highest water hardness: Sample in titration 3 – Dr. Layson’s Untreated Well Water (190. 94 ppm) Lowest Water Hardness: Sample in titration 5 – Dr. Layson’s Raw Well Water treated with a Brita Water Filter (33. 03ppm). These observations make sense because of course after using the Filter, the hardness should be decreased. For example, the Angola tap water is softer than the untreated well water, but both of them are harder than the SOFTENED well water. Ion exchange is to take out the cations that harden the water, and replace that with other ions such as Na+ and K+. This method is really effective because as the water goes through the bed of ion exchange materials, the hardening ions are removed, leaving the water soft and more satisfactory for usage. As we can see in the calculation, the hardness is reduced greatly by using the Filter. In titration 4 and 5, the amount of EDTA required to reach the endpoints is really little, due to the fact that the water samples are already softened in preparation, so the results do make sense. III. Conclusion: This lab gave me a better understanding of water hardness and titrating method. Now I know how much concentration of minerals in water would it take to be called hard water, and how different –hardness wise, are all the water samples. The calculations and results are fairly good and reasonable, as already discussed above. There are several things that could have been improved for better results: _ An easier to be defined indicator. _ More accurate glassware. _Human errors/ perspectives: For example, each person has his/ her own opinion on which is a blue or purple color, so the results would be different among everybody.

6 signs you have what it takes to be a recruiter -TheJobNetwork

6 signs you have what it takes to be a recruiter -TheJobNetwork One of the keys to running a successful business is staffing it with a team of superhero employees. That vital process often begins with a recruiter. Finding and securing the best-of-the-best is a recruiter’s job, one that requires some specific skills and personality traits. If you’re considering a career in corporate recruiting, you should first consult the following list of 6 signs to see if you have what it takes.1. You love peopleAn amazing job opportunity might sell itself, but a big part of recruiting still involves winning over potential employees so they’ll take the positions recruiters need to fill. That means a corporate recruiter must love people and be an expert at dealing with them. An outgoing nature is absolutely essential for the successful recruiter. The ability to turn down candidates who don’t make the cut with tact and compassion is a trickier, but equally essential, characteristic.2. You’re a self-starterWorkers who constantly require management to prod them into action need not apply. A recruiter must be completely proactive and constantly on the lookout for the very best people for particular jobs. If you have that constant yen to get working, you have a trait that all recruiters must possess.3. You’re a great communicatorAnyone who works with people must be a great communicator, and recruiters interact with people constantly. If you have a tendency to serve up word salad, recruiting isn’t for you. But if you are able to speak and write clearly, properly, and confidently, you are more likely to convince the best job candidates to come aboard. Not only must a recruiter be a great communicator, but they must also love to communicate. So if you’re the type who is always talking on the phone or texting, you might be cut out for recruiting.4. You solve problemsA recruiter’s life is not just locating great people and fitting them with great jobs. There are a lot of snags that can p op up during the workday, and it is the recruiter’s duty to meet any and all problems head-on, solve them quickly, and get on with the business at hand.hbspt.cta.load(2785852, '9e52c197-5b5b-45e6-af34-d56403f973c5', {});A champion recruiter never gets thrown by a candidate who fails to show up for an interview or a position that seems nearly impossible to fill with the right person. They greet such situations as challenges and always works to find the right solution.5. You are positiveUnexpected problems can toss a crimp into a recruiter’s workday, but the best ones always handle those challenges with a smile. The ability to meet all problems cheerfully is vital for the recruiter because those problems will often involve dealing with people- and the last thing a recruiter wants to do is alienate potential employees or employers with a bad attitude.6. You’re competitiveOne unique facet of a recruiter’s life is that there is a lot of competition out there. Other recruiters may be vying for the very same candidates as you, so you must thrive on competition and be completely determined to be the one who nabs that brass ring. Recruiters don’t just need the best candidates for particular positions; they too must be the best in order to be successful at their own jobs.If all of these characteristics seem to describe you, then you may very well be an ideal candidate for a career in corporate recruiting.