24 Answered Questions for the topic Compounds

05/14/19

Should I use " related" or "-related"?
What is **the correct use of the term *"related?"*** For example, should I use it like *computer related*, or is it more proper to use *computer-related* (where the word *"computer"* is just part... more
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04/01/19

Degree of acceptance of conjugation of verb according to root?
The verb *trasalire* should be conjugated (I report the Indicative present tense) as > Io trasalisco; Tu trasalisci, Egli trasalisce ...But since the verb may be perceived as a composite of... more
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03/29/19

Why the single particle glielo?
One can write:*glielo* porto, *gliene* riferisco, *gliela* scaldo, ...but not:*lelo* porto, *mene* incolse, *tela* scaldo, ...Why *gli* is different in this respect? Where does this difference... more
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03/15/19

Try and get some rest OR "Try to get some rest"?
Which sentence is grammatically correct? >Try **and** get some rest (or) Try **to** get some rest
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10/12/18

Compounds and Ions
The ions Na+ and Mg2+ occur in chemical compounds, but not the ions Na2+ and Mg3+ do not. Explain.
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01/30/18

Can someone help me with empirical formula and molar mass?
How do I find out the empirical formula of a molecule and how do I find the molecular formula?   Ex:    1. What's the empirical formula of a molecule containing 65.5% carbon, 5.5% hydrogen, and... more
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12/06/17

Can someone help me with Mole Conversion?
I'm struggling to understand on how to do this, I'm currently trying to use dimensional analysis to solve the problems, please help.   1. What is the mass of 12.5 moles of silicon?   2. How... more
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12/04/17

Can someone help me with finding out the Molar Mass and Percentage Composition for compounds?
Here are two examples:   Mg₃P₂   &   Sr(OH)₂     I've been struggling with trying to find out the molar mass/percentage compositions for these questions but I just struggle to do so,... more
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04/06/17

A principal of $2100 is invested at 7.5% interest, compounded annually. How many years will it take to accumulate $5000 or more in the account?
need answeer
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01/15/17

When ionic compounds dissolve in water their cations and anions become less attracted to each other. Does this support the idea that ionic compounds are good co
When ionic compounds dissolve in water their cations and anions become less attracted to each other. Does this support the idea that ionic compounds are good conductors when dissolved? Explain.    
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07/10/16

Which of the following compounds when placed in water would produce an electrically conductive solution?
-FeSO4 -ZnBr2 -Mn(OH)2 -CsBr -CCl4   Please select all that are true! 
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02/08/16

the reactions of amines and it's solubility
How does the solubility in water differ for the nitrogen containing compounds? Suggest reasons for this.What would you expect the solubility in non-aqueous solvents to be? Does your answer to this... more
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02/08/16

Equations for carboxylic acid
Write an equation for the reaction of ethyl ethanoate with dilute acid, Write a separate equation for the reaction of ethyl ethanoate with dilute alkali. Which one is the preferred method of... more
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02/08/16

Reactions of Carboxylic acids
Compare the reactions of ethanoic acid and ethanoyl chloride with ethanol. Explain the differences in their reactions.
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02/08/16

Equation for carboxylic acids and their derivatives
Write an equation for the reaction of PCl5 with ethanoic acid:   and    How might testing pH followed by the reaction with PCl5 be useful in an analysis of an unknown organic compound?
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09/28/15

Please Help! Stuck on a word problem
If the balance, M, at time t in years, of a bank account that compounds its interest payments monthly is given by M = M0(1.07763)t (a) What is the effective annual rate for this account? (b) What... more
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09/20/15

Name and define two types of formilas that can be used to describe compounds
Name and define two types of formulas that can be used to describe compounds
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08/29/15

Some chemistry questions about elements, and compounds
Hello, I humbly appreciate if you will answer these ff. questions.   1. Can you tell whether a substance is an element or a compound based on its physical appearance? 2. Knowing that an element... more
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05/01/15

How much AgCl is isolated using this and Ag(NO3)?
Chad decides to sneak into Ms. Smith's class room. He finds bottles of solution containing silver. He realizes that if he extracts the silver, he will strike it rich! First, he sees silver nitrate.... more
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02/24/15

complete the following table summarizing the amounts of nitrogen and oxygen produced upon the decomposition of the sample of dinitrogen monoxidc
Use the law of constant composition                  Mass N2O       Mass N       Mass OSample A        2.85 g               1.82 g      1.03 gSample C       _____             _____          1.55... more
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02/24/15

complete the following table summarizing the amounts of nitrogen and oxygen produced upon the decomposition of the sample of dinitrogen monoxide.
            Mass N2O       Mass N    Mass OSample A 2.85 g          1.82 g       1.03 gSample B 3.15 g           _____       _____     Use the Law of Constant Composition
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02/24/15

complete the following table summarizing the amounts of nitrogen and oxygen produced upon the decomposition of the sample of dinitrogen monoxide.
            Mass N2O       Mass N    Mass OSample A 2.85 g          1.82 g       1.03 gSample B 3.15 g           _____       _____     Use the Law of Constant Composition
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10/27/14

Convert each compound statement into symbols.
Let p represent the statement " Chris collects DVDs" an let q represent the statement " Josh is an art major." Convert each compound statement into symbols.     1. Chris does not collect DVDs or... more
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02/25/14

what is this compounds
Barium ions carry a 2+ charge, and nitrogen ions carrya 3- charge. What is the chemical formula for the ioniccompound barium nitride
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