Question

PLZ HELP ASAP!!! I WILL FAN AND MEDAL THE BEST HELPER!!!

Answer 1

Many factors can affect the rate of chemical reactions. In the following investigation, you can experiment with a chemical reaction to see how changing variables can affect the outcome. You will produce a precipitate using simple household chemicals and the carbon dioxide from your own breath.
Experiment Idea: Using the common household chemical Epsom salts (magnesium sulfate) and your own breath, you can cause a reaction that forms a precipitate. You will need four clear cups with plastic lids that you can poke straws through, some Epsom salts, and some distilled water. With a permanent marker, label the cups with the numbers 1 through 4. Put the same amount of distilled water (for example, 1.5 cups) into each cup. Then, dissolve a different amount of Epsom salts in the water in each cup (for example, dissolve 1/4 teaspoon in cup 1, ½ teaspoon in cup 2, ¾ teaspoon in cup 3, and 1 teaspoon in cup 4). Record how much water and Epsom salts you add to each cup. Cover the cups with the lids and poke straws through. Then, blow through the straw in each cup. Try to blow the same amount of air through each straw into the liquid in each cup. Be sure to take a few breaths after each blow, since without taking regular breaths, the CO2 levels in your breath will change, altering the results of the reaction. Observe what happens as you blow through each straw, and record your observations in a data table. In the cups, the carbon dioxide from your breath reacts with magnesium sulfate to produce a precipitate.
Next, explore as many factors as possible that may influence the reaction. You can empty, rinse, and reuse the cups if you need to. Does heating or cooling the water change the reaction? What happens if you blow harder into the straw, or use very thin or very thick straws? Record all your results in a data table.
Note: Make sure to put the lids on the cups as soon as you have dissolved the Epsom salts in the water. Keep the lids on the cups during the whole experiment. The magnesium sulfate will react with the carbon dioxide in the air, and this reaction could alter the results of your experiment. The lids keep much of this reaction from occurring because they prevent air from getting into the cup.
Research Idea: Search your local library or the Internet for information on magnesium sulfate and carbon dioxide. Find out what these chemicals are used for. Try to figure out the chemical formula for your reaction. What is the chemical formula of the precipitate in the cups? Are there any naturally occurring materials that have this chemical formula? If so, what are they? Where are they found?

Answer 2

do it, things it is asking you to do. If there is confusion, we will help.

Answer 3

Thanks, but im having trouble with answering the questions at the end.

Answer 4

Nevermind. I need help witha new question.

How has the use of electromagnets changed industry over the years?

Answer 5

read about it, research in google, 'uses of electromagnet' you will see what they are currently used for and tell how it effected your life since you do use technology that has electromagnets

Answer 6

ofc from industrial point of view too

Answer 7

Okay. Thanks for your help! :D

Answer 8

np :)