Purpose: Can the penny hold more drops of water or more drops of the MYSTERY liquid? Research: Cohesion- The state of sticking together. Pennies can hold more water because soap reduces the cohesion of water and the water molecules break apart and can’t stay on the penny. Hypothesis: The penny will hold more a larger number of drops of water because water is more cohesive than the “mystery” liquids Variables: Independent variable: Penny Dependent variable: Number of Drops of Water Control
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Percent By Mass Solution Problems 1. What is the percent by mass of a solution made by dissolving 0.49 g of potassium sulfate in 12.70 g of water? 2. What is the percentage concentration of 75.0 g of ethanol dissolved in 500.0 g of water? 3. A chemist dissolves 3.50 g of potassium iodate and 6.23 g of potassium hydroxide in 805.05 g of water. What is the percentage concentration of each solute in the solution? 4. A student wants to make a 5.00 % solution of rubidium chloride
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the man tosses a penny in the air. It’s like he’s playing the game heads or tails to decide if he should or should not fall in love with this girl. It does not take long for the man to realize that it is okay for him to fall in love. The man does indeed love this girl very much and wants to spend the rest of his life with her. The poet states that “he’s looped in the loops of her hair”‚ meaning the man is blinded by her love. The man also admits that even without tossing a penny‚ he would have come
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Lucky Penny that is the nickname given to me by my parents gave me the day I was born. And by all outward appearances‚ I was indeed Lucky. My parents took good care of me‚ and I am sure I appeared spoiled. From my life’s point of view as well‚ I had all a child could want from a beautiful home‚ pool‚ pets that I loved‚ and all the fun toys from Barbie dolls‚ the TRS80‚ and my favorite by far the Atari. I really wanted for not‚ and even into my older years‚ life was good. I can only fathom that
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Knowing Your Audience ans Communication Release The news of a devastating accident is not easy to prepare or communicate to any one involved. Being the bearer of bad news is never easy. The way in which the news is delivered‚ and what must be done before and after the news is relayed is also important. The needs of the employees is different than the needs of the family members of those men who were trapped in the mine. It is vital to make sure to address each of these groups in a
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President Abraham Lincoln began to develop his plan for reconstruction. Lincoln wanted to reassemble the North and South after the war ended. Lincolns game plan for Reconstruction included the Ten-Percent Plan. The Ten-Percent Plan stated that a state in the south could be reaccepted into the Union once ten percent of its voters testified an oath of allegiance to the Union. Delegates were then elected by voters to establish new state governments and draft revised state constitutions. On May 29‚ 1865‚ Johnson
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Unit 7 Final Project Part 1 One concept that I have chosen is percentages. A percent is a fraction that has a denominator of 100. Finding the percent of a number‚ and finding the missing percent could be very useful in the profession that I have chosen. The profession that I would like to pursue is accounting. Using percentages is used in many ways in accounting. One way is to do a trend analysis. A trend analysis calculates the percentage change for one account over a period of time of two
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Percent Error occurs due to many factors. In this lab by the graph I can state that there was a 100% error in all three unknown substances‚ Pure Leaf Lemon Tea‚ Sprite‚ and Tree Ripe Lemonade. This could be a result of not having properly zeroed the scale or the scale glitching when it came to zeroing it‚ which would have added extra mass and skewed the results. Another factor that could have resulted in a high percent error would have been the scale itself glitching which would have caused the wrong
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MARKET BRIEF COPPER WIRE IN THE PHILIPPINES Table of Contents 1. Overview a. Description about the Copper in the Philippines b. Trade Data c. State Competitors 2. Consumer tastes 3. Trade policy and its derivatives products in the Philippines 4. Marketing Distribution Channels 5. Analysis a. Strength; b. Weakness; c. Opportunities; d. Barriers; 6. Recommendations; 7. Institutions/Agencies
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may affected the mass of the copper was recovered and also the percentage of yield. According to the law of conservation of matter‚ the mass of the copper will not change even though there are many chemical reactions happened which also mean that the mass of copper contained in solutions or precipitates remain the same as the copper in the beginning. And it is necessary to synthesize the various copper compounds in order to recover metal because the amount of copper might be left due to some errors
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