Which phase of matter is made up of particles that are packed closely together, with both a definite shape and a definite volume? When 13.6 grams of KCl are dissolved in enough water to create a 180-gram solution, what is the solution's concentration, expressed as a percent by mass? Organic compounds that contain only carbon and hydrogenĪccording to the collision theory and model created to explain the collision theory, what happens to a catalyst in a reaction? Which of the following correctly describes a hydrocarbon? Which of the following is the salt in the Brønsted-Lowry neutralization reaction? It increases the average kinetic energy and there are more collisions per minute. What term explains why some materials heat up more quickly than others?Īccording to the collision theory and model created to explain the collision theory, what is the best explanation for why a higher temperature makes a reaction go faster? 25 L of 12 M HCl solution to end up with 2.0 L of 1.5 M HClģ mol*1L/12M=.25L 1/4 of a liter of HCl is needed to go with 1.75L of water. How could you prepare the solution needed for the lab experiment? Show all the work used to find your answer.Īdd 1.75 L of H2O to. Heat from the Earth's core and pressure on the remains of dead plants and animals create which of the following resourcesĪ laboratory experiment requires 2.0 L of a 1.5 M solution of hydrochloric acid (HCl), but the only available HCl is a 12.0 M stock solution. How would a system in which both matter and energy are exchanged freely between the system and the surroundings be classified? On a potential energy diagram, what is true about activation energy?Īctivation energy is greater for endothermic reactions. What is the concentration of hydronium ions in a solution with a pH = 3.9? The chain reaction continues until all uranium-235 isotopes have split, or until the neutrons fail to collide with any more uranium-235 nuclei. Which of the following best describes a chain reaction in a nuclear fission reaction? The water and the metal's temperature will reach the same temperature. If you drop a 50 gram piece of metal that has a temperature of 110☌elsius into 1000 grams of water at 25☌elsius, what best describes what would occur? Plasma forms when a gas reaches extremely high temperatures, and electrons are released from the atoms. Which of the following best describes the formation of plasma? They move more slowly, resulting in the formation of a solid. Which of the following best explains what happens when the kinetic energy of particles in a liquid state decreases? The particles have less kinetic energy in the liquid phase than they do in the gas phase. How does the kinetic energy of a substance's particles in the liquid phase compare to their kinetic energy in the gas phase? If 64 grams of O2 gas occupy a volume of 56 liters at a temperature or 25☌, what is the pressure of the gas, in atmospheres (atm)? How many liters of fluorine gas can react with 32.0 grams of sodium metal at standard temperature and pressure? Show all of the work used to find your answer.ģ2 g Na x (1 mol Na / 23.0 g Na) x (1 mol F2 / 2 mol Na) x (22.4 L / 1 mol F2) = 15.6 L of fluorine Which of the following describes what occurs as a gas becomes a liquid?Ī physical change occurs the particles of the gas vibrate more slowly and their kinetic energy decreases. Which of the following best describes this type of reaction? Hydrogen peroxide will decompose if the bottle is left open and the resulting release of energy will heat up the solution. Chemistry Final Final Chemistry Exam Question
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Toronto has one of the least-stocked farm systems at the moment, and frankly might not need a starting pitcher, between Hyun-Jin Ryu working his way back from Tommy John surgery and Alek Manoah being quite the wild card of a fifth starter. Texas' Martin Perez Tim Heitman/Getty Images Honorable Mentions: Atlanta Braves, Milwaukee Brewers, Philadelphia Phillies, New York Yankees, San Diego PadresĪll references to farm system/prospect rankings come from our Joel Reuter, who shortly after the draft re-ranked all 30 farm systems and provided an updated top 100 prospects ranking (plus 50 honorable mentions). However, we are approaching this under the assumption that a trade will be made for just Giolito.) (It's worth mentioning that Giolito very well could be part of a package deal along with Tim Anderson, Keynan Middleton, Lance Lynn or others. We've ranked the top 10 candidates based primarily on a combination of team needs, current standings and what those teams have to offer. That team will also be on the hook for the prorated remaining portion of his $10.4 million salary, which amounts to roughly $3.5 million. It won't be a massive haul of prospects, as Giolito is one of those impending free agents who would merely be a two-month rental for his new team. Of the bunch, right-handed starting pitcher Lucas Giolito figures to fetch the prettiest penny. And with 11 players either hitting unrestricted free agency (six players) or under a contract with a club/mutual option for 2024 (five players), they might as well blow it up in hopes of getting something before all those guys relocate. Chicago White Sox pitcher Lucas Giolito Nuccio DiNuzzo/Getty ImagesĪt some point in the remaining days before Major League Baseball's August 1 trade deadline, the Chicago White Sox are going to enter "fire sale mode."Īt 41-57, they are a lost cause, even in the atrocious AL Central. Only about the size of a Tufted Titmouse, the Downy Woodpecker is, in fact, the smallest woodpecker in all of North America. Even its name, “downy,” sounds small, like a kid’s squeaky toy. The key to identifying the Downy Woodpecker is the size. Sorting out which bird is which is totally doable, with just a few hints…and a bit of practice. (You would think at least one of them would have gone for the paisley look.) No worries, though. These two different species are dressed in nearly identical outfits. But for some reason, there was a total lack of imagination when the Hairy and Downy were invented. Of our state’s seven species of resident woodpeckers, five species (Red-Headed, Red-bellied, Pileated, Northern Flicker and Yellow-bellied Sapsucker) look nothing alike and could easily be picked out of a lineup. This is probably more info about our woodpecker history than you wanted to know, but when you write your eventual doctorial thesis on this very topic, you’ll thank me. This has resulted in the re-growth of the forests and the return of woodpeckers. In reality, woodpeckers don’t much care for pastures, green or otherwise.) In more recent times, farming and lumbering have become less important to the local economy. (BTW, Ethan, “greener pastures” is just an expression old people use. They were eventually forced to leave the Bay State for greener pastures. Without trees, woodpeckers had nothing to peck on. Early settlers had cut down all the forests for lumber or to create farmland. A few centuries ago, trees, and therefore woodpeckers, were in short supply. Conversely, if you aren’t a woodpecker fan, you might want to travel back to the Colonial era. Are the kids in fifth grade still wearing paisley shirts? I’m sure they are, because that’s one fashion that will never go out of style…at least it hasn’t for me.Īnyone who likes woodpeckers is living in the right time period. Since you weren’t even alive when I first wrote about Downy and Hairy Woodpeckers, I’ve decided to write you a fresh column. That’s before you were born and back when I was in the fifth grade…or not. After checking my files, it turned out that I actually wrote that particular column in 2002, sixteen years ago. But then I discovered my idea of “recently” was a bit off. When I first received your note I was simply going to send you a copy of a column that I had recently written on this very topic. I’m not sure which one we have in our yard. Right now my biggest challenge is trying to identify a Downy Woodpecker from a Hairy Woodpecker. I’m a new bird watcher who is particularly interested in woodpeckers. The perfect complement to 7Seconds Shampoo, 7Seconds Conditioner adds another level of brilliant shine and protects hair from UV rays, thermal damage and color fading. Only takes 7 seconds to make a great first impression - make it count with our award-winning 7Seconds hair system. 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If you have drainage in your yard, that would be better otherwise, you don’t want to be standing in the same place too long where it can become swamped. In most cases, it can be good fertilizer for your lawn or garden. Have a good sprayer that isn’t too hard to trigger, so your hand doesn’t get tired!Īs you spray off your DE filters, the run-off needs to go somewhere. This is the key to cleaning your DE filter grids and fingers. It’s important to keep your DE filter tank’s O-ring (between the lid and tank) lubricated so the lid comes on/off easier. This is helpful if you want to wipe down the filter tank and other parts or pipes. You’re bound to get a little wet and possibly in contact with filter gunk. Some are necessary, while others are entirely optional. Here is a list of helpful items to have ready before setting out to clean your DE filter grids and parts. If yours says cartridge or sand, then those are entirely different! 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As for powders, you’re likely to find that your choices have narrowed in recent years. Strips are better for the environment by reducing plastic but seem to lack the ingredients or concentration levels to do the job. Our tests reveal there’s a chasm between the best liquids, pods/packs, and laundry detergent strips, the latter of which tested so poorly in our labs that we don’t recommend them. Stroll your grocery store’s cleaning aisle and you’ll see a rainbow of products boasting Marvel hero-like superpowers-Ultra Oxi, Stain Fighter, Power Pods, O₂ Blitz, Boombastic Clean. How do you know which superlatives to believe and which detergent to choose? Some CR readers tell us they have strong preferences, and some variables are largely subjective (such as scent).īut cleaning power also varies depending on the type of detergent. How do we know? CR tests more than 60 detergents from top brands like Tide, Persil, and Kirkland Signature. 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More than 3,000 fans will be in the stadium, and grounds passes were sold to watch it on a video screen.īarty, 23, won the French Open last spring and would have vaulted to No. Gauff’s big Open-prep appearance prompted tickets to sell out in two hours once announced last month. It’s the first women’s match played at the men’s tournament. 2 seed, the surging Aussie Ashleigh Barty, at the site of the Winston-Salem Open, an ATP event. Gauff will square off against the Open’s No. The Wimbledon darling, whose professional tournament opportunities are limited by the WTA’s age-restriction rules, is playing a non-sanctioned exhibition match. Gauff has one last warmup date Wednesday night in North Carolina before storming into Flushing Meadows for her first appearance in the U.S. Tennis star's fiancé, rivals react to her jaw-dropping retirementĪsh Barty's legendary tennis career in PhotosĬoco Gauff, the 15-year-old tennis sensation, says she wants to “change the world.” First she will look to win a U.S. Giants legend highlights loaded field at new celebrity golf event Former US Open champ announces she's pregnant, a year after retirement |
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