Mg(ClO3)2 + 2NaOH → Mg(OH)2 + 2NaClO3.
This is about as hard a question as you can get in beginning chemistry. You have to figure out which chemical between the two reactants is the LEAST number of moles before you can do anything about the products. Read that sentence over again carefully and keep in mind what least means. It's the key to the entire question.
For every mole of Mg(ClO3)2 you need two moles of NaOH. That's what the balanced equation tells you. The big number on the left of the chemical is where I'm getting 1 to 2. One is in front of Mg(ClO3)2 and 2 is to the left of NaOH
So you have 2.72 moles of Mg(ClO3)2. You would need to have 2.72*2 moles of NaOH which is 5.44 moles of NaOH. Do you have enough NaOH. (I should hear a resounding NO.) So the limiting reactant is NaOH. You only have 3.14 moles of NaOH. Now you can start getting the answer to the question
You now need to set up the same ratio for the Mg(OH)2
For every 2 moles of NaOH you get 1 mole of Mg(OH)2. The proportion is
NaOH/Mg(OH)2 = 2/1
NaOH = 3.14 moles
3.14 / Mg(OH)2 = 2/1 Cross multiply
3.14 = 2 * Mg(OH)2 Divide by 2
3.14/2 = Mg(OH)2 Combine the left
1.57 = Mg(OH)2 Answer
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I'll let you work through the second blank. I'm not completely heartless so I'll tell you that the ratio is 1:1 and that the answer should be 3.14
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Answer Box one = 1.57
Answer Box Two = 3.14
Answer:
increase when the distance between two objects increases
Explanation:
when the objects move further apart, the gravitational pull between them becomes weaker, and so the gravity isn't as strong. all of the other options increase gravity
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Answer:
Don't use tobacco or tobacco-containing products
Maintain a healthy diet
Protect yourself from the sun, make sure to use sunscreen
Go to the doctor regularly, for general checkups
Stay physically active
Explanation:
hope this helps :)
Answer:
An appropriate solvent is <u>only in the fingerprint region. </u>
Explanation:
For scientists to study the infrared spectra of substances in the various states of matter, solutions are usually made with solvents. However, it has been noted that some of these solvents can interfere with the reaction spectra or be absorbed within the range of the solutes. A solution to this problem is using the right solvents with non-interfering infrared spectrum and which have no chemical effect on the solute.
The bands formed by the solvent should also be located in the the fingerprint spectrum. Examples of solvents used to achieve this and which meet up these requirements include, Carbon tetrafluoride and Carbon disulfide.
