Rate of rate of hydrochloric acid and mange essays

Rate of rate of hydrochloric acid and mange essays Rate of rate of hydrochloric acid and mangesium ribbon In the reaction between hydrochloric acid and magnesium ribbon, the hydrochloric acid will dissolve the magnesium and produce hydrogen gas. All chemical reactions involve reactants which when mixed may cause a chemical reaction which will make products. In my case the reactants are hydrochloric acid and magnesium ribbon. The chemical reaction takes place when the magnesium ribbon is dropped into the hydrochloric acid. The products that are formed during this reaction are hydrogen gas and magnesium chloride. The formula equation for this experiment is: Magnesium + Hydrochloric acid (r) Magnesium Chloride + Hydrogen ( s ) ( aq ) ( aq ) ( g ) Magnesium will react with hydrochloric acid, because it is higher in the reactivity series that hydrogen. When the two chemicals react a displacement reaction will take place and the magnesium will displace the hydrogen in the hydrochloric acid forming magnesium chloride and hydrogen gas. Li (lithium) all to dangerous to react with a strong acid Zn (zinc) these metals will react with hydrochloric acid as they Fe (iron) they are higher in the reactivity series than hydrogen Sn (tin) and so a displacement reaction will take place Hg (mercury) none of these metals will react with hydrochloric Ag (silver) acid as they are all lower in the reactivity series than Al (gold) hydrogen, therefore a displacement reaction will not happen Depending on certain factors the rate that this reaction will take place will either increase or decrease. The factors that may affect the rate of reaction are as follows: Temperature of the Hydrochloric Acid Mass of the magnesium ribbon used Concentration of the Hydrochloric acid Surface area of the magnesium ribbon used All of these factors will change the rate of reaction because of the Collisi...

Addendum on Used To vs. Use To

Addendum on Used To vs. Use To Addendum on Used To vs. Use To Addendum on Used To vs. Use To By Maeve Maddox It sometimes happens that I write a post that I think is beautifully focused on one point of usage, and then I receive a slew of emails faulting me for misrepresenting the topic. That’s what happened with a post on the modal use of used and use to express habitual action in the past. When an article receives this kind of response, I have to assume that my intended explanation wasn’t as clear as I thought it was. The post was based on the following question from a reader: Which is correct    He USED to go to the game on Friday. He USE to go to the game on Friday. All I intended to point out in my answer was that used is the correct choice for the examples given, but that use is correct when it follows the negative didn’t. What I said was, When the statement is positive, as in the reader’s example, the expression is used to. In negative statements, the expression is use to. For example, â€Å"He didn’t use to go to the game on Friday.† One reader correctly commented, â€Å"The distinction is not really about positivity/negativity,† and offered the following sentences as evidence: He did use to go to the game on Friday. He never used to go to the game on Friday. The first example is correct as a contradictory statement. For example: Person A: He didn’t use to go to the game on Friday. Person B: He did use to go to the game on Friday. The second example contains the negative adverb never, but used is still the correct form. Any adverb, negative or otherwise, may modify the modal used: never used to go always used to go rarely used to go I apologize for my sweeping statements about positive and negative. Another reader asks, Can we say â€Å"usednt to† instead of  Ã¢â‚¬Å"didn’t  use to†? It depends. If you live in the UK or some other place where this expression is common, go ahead and use it. If you say it to an American speaker, you’re likely to get a puzzled look. For British speakers, here’s what it says about the different forms in The Penguin Writer’s Manual: The strictly correct negative form of used to is used not to, which can be shortened to usedn’t to: â€Å"You used not to (or usedn’t to) mind if we came in a little late.† This often sounds rather formal, so that did not use to or didn’t use to (but not didn’t used to) are generally acceptable in informal speech or writing. Likewise, the traditionally correct negative question form used you not to..? or usedn’t you to..? is often replaced, more informally, by didn’t you use to..? If neither of these options seems acceptable, you used to, didn’t you? can be used. Another reader demands, What is your authority for this? My usual authorities are the OED, Merriam-Webster Unabridged Dictionary, and The Chicago Manual of Style. This time, however, I relied for the most part on British and American grammar sites that target English learners. BBC: When talking about things that we did in the past but dont do now we can use the expression  used to. The negative form, to talk about things which we didnt do in the past but do now, is  didnt use to.   Oxford Learner’s Dictionaries: Except in negatives and questions, the correct form is used to: â€Å"I used to go there every Saturday.† To form questions, use did: Did she use to have long hair? The negative form is usually didn’t use to, but in British English this is quite informal and is not usually used in writing. English Stack Exchange: Except in negatives and questions, the correct form is used to: â€Å"we used to go to the movies all the time† (not we use to go to the movies). However, in negatives and questions using the auxiliary verb do, the correct form is use to: â€Å"I didn’t use to like mushrooms† (not I didn’t used to like mushrooms). Finally, several readers wondered about the pronunciation of used to and use to. You’ll find a thorough treatment of British and American pronunciation of these forms at the Oxford Learner’s Dictionaries site. Thanks to all of you for your comments. Want to improve your English in five minutes a day? Get a subscription and start receiving our writing tips and exercises daily! Keep learning! Browse the Misused Words category, check our popular posts, or choose a related post below:50 Redundant Phrases to Avoid55 Boxing IdiomsUlterior and Alterior

Protesting inequality - Harassment and protest in India Essay

Protesting inequality - Harassment and protest in India - Essay Example In India, women are married young, become young mothers at a young age that then burdens them with stringent financial and domestic responsibilities. A great number of women in India are malnourished as traditionally they should be the last to eat and last to receive medical attention. In relation to education 76%, men in India are educated while only 54% of women are educated; they receive little or no schooling and suffer from unfair and biased divorce and inheritance laws. To generate change the Indian people use the anti-reservation protests, in these protests, they push for integration of women into all the sectors mostly education, and also push for a revision of the existing policies. Other tactic people use to improve the conditions for women is the use of social media. In these, the people understand that the media possesses immense power in regard to influencing masses. In these, they ensure that the media covers all the women issues in India bringing them open to the publi c. In India, Television is one of the pervasive and powerful media that women use to ensure that their message is communicated to the public. Faithful patriots: religion and nationalism Islam is the official religion in Pakistan; the country has the second largest Muslim population after Indonesia. The 2007 census found that 96% of Pakistanis total population was Muslim with 20% being Shia and 76% Sunni. Historically, Islam arrived in Pakistan back in 711CE, after Umayyad dynasty sent a Muslim Arab army against the ruler of Sindh.