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

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

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

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

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.

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

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

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

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.    

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! 

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

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

02/08/16

Reactions of Carboxylic acids

Compare the reactions of ethanoic acid and ethanoyl chloride with ethanol. Explain the differences in their reactions.

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?

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

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

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

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

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

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

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

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

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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