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...

How to Offer Things in English as a Second Language

How to Offer Things in English as a Second Language Offering things in English is essential whenever you want to be polite, have guests at your home, or even organize a work event. The phrases below cover both how to offer various items to your guests, as well as how to accept offers graciously. Learn to use these phrases so that you can offer and accept things graciously and in a socially appropriate manner. Offering Phrases Its common to use phrases such as would you like and modal forms such as Can I or May I  to offer something. Here are some of the most important phrases used to offer something: Can I get you some...?Would you like some...?May I offer you some...?Would you like me to get you some...? Some mini-dialogues containing these asking phrases might be: Bob: Can I get you something to drink?Mary: Yes, that would be nice. Thank you.Jack: May I offer you some tea?Doug: Thank you.Alex: Would you like some lemonade?Susan: That would be nice. Thanks for offering. Always use some words when offering someone something. Informal Use these phrases when offering something in an everyday situation: How about some...?What about some...?What do you say about some...?Are you up for some...? Mini-dialogues  containing offering phrases in informal situations would be: Dan: What about something to drink?Helga: Sure, do you have any scotch?Judy: Are you up for some dinner?Zina: Hey, thanks. Whats on the menu?Keith: What do you say about going bowling?Bob:  That sounds like a good idea! Accepting Offers Accepting offers is just as important, or even more important, than offering things. Make sure to thank your host. If you dont want to accept an offer, politely refuse. Offering an excuse is also a good idea in order not to offend your host. The following phrases are commonly used when accepting offers: Thank you.Id love to.Id love some.That would be nice.Thank you. Id like... Some examples of accepting phrases include: Frank: May I get you something to drink?Kevin: Thank you. Id like a cup of coffee.Linda: Would you like me to get you some food?Evan: That would be nice. Thank you.Homer: May I offer you something to drink?Bart: Thank you. Id like a soda. Politely Refusing Offers Sometimes its necessary to politely refuse an offer even if its a kind one. In such cases, use these phrases to politely refuse offers. Provide a reason why you want to refuse an offer rather than just saying no.   Thank you, but...Thats very kind. Unfortunately, I...Id like to, but... Examples of using polite refusals in dialogue include: Jane: Would you like some cookies?David: Thank you, but Im on a diet.Allison: How about a cup of tea?Pat: Id like to have a cup of tea. Unfortunately, Im late for a meeting. Can I take a rain check?Avram: How about some wine?Tom: No thank you. Im watching my weight.