Laser_3

In the ionic compounds LiF, NaCl, KBr, and RbI, the measured cation–anion distances are 2.01 Å ...

In the ionic compounds LiF, NaCl, KBr, and RbI, the measured cation–anion distances are 2.01 Å ...

In the ionic compounds LiF, NaCl, KBr, and RbI, the measured cation–anion distances are 2.01 Å (Li–F), 2.82 Å (Na-Cl), 3.30 Å (K–Br), and 3.67 Å (Rb–I), respectively.

1. Predict the cation–anion distance using the values of ionic radii giv

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sarah52309   1492   24 Replies

jm207798

What volume of 0.305 M AgNO3 is required to react exactly with 155.0 mL of 0.274 M Na2SO4solution?

What volume of 0.305 M AgNO3 is required to react exactly with 155.0 mL of 0.274 M Na2SO4solution?

What volume of 0.305 M AgNO3 is required to react exactly with 155.0 mL of 0.274 M Na2SO4solution?  Hint:  You will want to write a balanced reaction.

a.581 mL
b.173 mL
c.345 mL
d.139 mL
e.278 mL

snguyen51   37   1 Reply

bio_man

Add 5.0 × 104 to 2.0 × 103 and express the answer in scientific notation.

Add 5.0 × 104 to 2.0 × 103 and express the answer in scientific notation.

Add 5.0 × 104 to 2.0 × 103 and express the answer in scientific notation.

boyo4man   35   1 Reply

bio_man

HELP how to draw the products (2R,3S)-2-bromo-3-methylpentane

HELP how to draw the products (2R,3S)-2-bromo-3-methylpentane

I have attached the question please help I have been having trouble with this all day.
Thank You

12

beachbumbetty   6282   22 Replies

5 / 5

BurntToast

A 1.35 m aqueous solution of compound X had a boiling point of 101.4 °C. Which one of the following

A 1.35 m aqueous solution of compound X had a boiling point of 101.4 °C. Which one of the following

A 1.35 m aqueous solution of compound X had a boiling point of 101.4 °C. Which one of the following could be compound X? The boiling point elevation constant for water is 0.52 °C/m.
A) C6H12O6
B) CH3CH2OH
C) Na3PO4
D) CaCl2
E

chemDO   1047   3 Replies

missmyz02

The balanced equation involves the corresponding coefficients ________.C6H14 + O2 → CO2 + H2O

The balanced equation involves the corresponding coefficients ________.C6H14 + O2 → CO2 + H2O

The balanced equation involves the corresponding coefficients ________.
C6H14 + O2 → CO2 + H2O
A) 1: 9: 6: 7
B) 1: 10: 6: 7
C) 2: 19: 12:14
D) 2: 21: 6: 7

cynthiaa   80   2 Replies

smperez-lopez63

If the entropy of a collection of molecules in 5000 boxes is 1.76 × 10-20 J/K, how many molecules ar

If the entropy of a collection of molecules in 5000 boxes is 1.76 × 10-20 J/K, how many molecules ar

If the entropy of a collection of molecules in 5000 boxes is 1.76 × 10-20 J/K, how many molecules are there?

Whelan   845   6 Replies

abbspence

The main difference between conductors and insulators is in terms of

The main difference between conductors and insulators is in terms of

The main difference between conductors and insulators is in terms of

bernsel   51   1 Reply

bio_man

In the ionic compounds LiF, NaCl, KBr, and RbI, the measured cation–anion distances are 2.01 Å (L

In the ionic compounds LiF, NaCl, KBr, and RbI, the measured cation–anion distances are 2.01 Å (L

IN Chemistry: The central science, Volume I (12th ed.). Chapter 7 : End of Chapter question 7.38


In the ionic compounds LiF, NaCl, KBr, and RbI, the measured cation–anion distances are 2.01 Å (Li–F), 2.82 Å (Na–Cl), 3.30 Å (K–Br), an

12

hornsbyp101   19741   20 Replies

5 / 5

techiwa

Given that the pH of a Benzoic Acid solution is 3.00, calculate the ratio of dissolved Benzoic Acid ...

Given that the pH of a Benzoic Acid solution is 3.00, calculate the ratio of dissolved Benzoic Acid ...

Given that the pH of a Benzoic Acid solution is 3.00, calculate the ratio of dissolved Benzoic Acid to Benzoate ion at equilibrium.  K_a for Benzoic Acid is 6.46×〖10〗^(-5).


a. If the pH is 6.00, what is this ratio

Jessc   426   4 Replies

yoyoyoyo69699

Choose the substance with the lowest boiling point.

Choose the substance with the lowest boiling point.

Choose the substance with the lowest boiling point.
A) H2Se
B) NBr3
C) N2
D) CBr2H2
E) H2O2

SydTay   70   2 Replies

doctorcaddy007

The theoretical number of water moles produced from two moles of C6H14 is ________.C6H14 + O2 → ...

The theoretical number of water moles produced from two moles of C6H14 is ________.C6H14 + O2 → ...

The theoretical number of water moles produced from two moles of C6H14 is ________.
C6H14 + O2 → CO2 + H2O
A) 1
B) 6
C) 7
D) 14

centromere   485   3 Replies

smperez-lopez63

Which of the compounds, NaH , PH3, CH4, IBr3 are ionic compounds?

Which of the compounds, NaH , PH3, CH4, IBr3 are ionic compounds?

Which of the compounds, NaH , PH3, CH4, IBr3 are ionic compounds?
A) only CH4
B) only NaH
C) Na H and PH3
D) PH3, CH4, and IBr3

jayjayhussle310   82   3 Replies

5 / 5

dperson19

Explain why polyamides tend to be crystalline polymers.

Explain why polyamides tend to be crystalline polymers.

Explain why polyamides tend to be crystalline polymers.

thall031   62   1 Reply

ZanLau

Explain why polyamides tend to be crystalline polymers.

Explain why polyamides tend to be crystalline polymers.

Explain why polyamides tend to be crystalline polymers.

SydTay   70   3 Replies

5 / 5

palmerga

Which tend to exhibit a higher degree of crystallinity, isotactic or atactic polymers? Explain briefly.

Which tend to exhibit a higher degree of crystallinity, isotactic or atactic polymers? Explain briefly.

Which tend to exhibit a higher degree of crystallinity, isotactic or atactic polymers?  Explain briefly.

gerti   75   1 Reply

samanthajones10

Which type of polymer, isotactic or atactic, tends to be stronger and stiffer? Explain briefly.

Which type of polymer, isotactic or atactic, tends to be stronger and stiffer? Explain briefly.

Which type of polymer, isotactic or atactic, tends to be stronger and stiffer?  Explain briefly.

QueenPinky   59   2 Replies

QueenPinky

What name is given to nonvolatile liquids that dissolve in polymers and thus lower the attractions ...

What name is given to nonvolatile liquids that dissolve in polymers and thus lower the attractions ...

What name is given to nonvolatile liquids that dissolve in polymers and thus lower the attractions between the polymers' chains?

loweba1   61   1 Reply

Chris Rodz

Low-density polyethylene is soft and flimsy because it has a ________ and ________ structure.

Low-density polyethylene is soft and flimsy because it has a ________ and ________ structure.

Low-density polyethylene is soft and flimsy because it has a ________ and ________ structure.

• unbranched; crystalline

• highly branched; amorphous

• highly branched; crystalline

• unbranched; triglyceride

• unbranched; amorphous

lulalu   52   3 Replies

Sunni_rae

When a plasticizer is added to a polymer, the overall effect is to ________ the crystallinity of the ...

When a plasticizer is added to a polymer, the overall effect is to ________ the crystallinity of the ...

[html]When a plasticizer is added to a polymer, the overall effect is to ________ the crystallinity of the polymer and ________ its Tg.

• eliminate; raise

• increase; raise

• reduce; raise

• reduce; lower

klcarrasquillo   83   1 Reply

ninim2998

Below Tg, crystalline polymers exist as ________.

Below Tg, crystalline polymers exist as ________.

[html]Below Tg, crystalline polymers exist as ________.

• thermoplastics which are flexible and moldable

• liquids which are flexible and moldable

• glasses of low flexibility

• thermoplastics which are r

Hellohi21   58   3 Replies

Jamesriverdean

Above Tm, crystalline polymers exist as ________.

Above Tm, crystalline polymers exist as ________.

[html]Above Tm, crystalline polymers exist as ________.

• thermoplastics which are flexible and moldable

• liquids which are flexible and moldable

• glasses of low flexibility

• thermoplastics which are r

teacherlovinz   52   1 Reply

lakeisha

Between Tg and Tm, crystalline polymers exist as ________.

Between Tg and Tm, crystalline polymers exist as ________.

[html]Between Tg and Tm, crystalline polymers exist as ________.

• thermoplastics which are flexible and moldable

• liquids which are flexible and moldable

• glass

Monstermomma2   59   2 Replies

5 / 5

Monstermomma2

At low temperatures, long-chain polymers are usually ________.

At low temperatures, long-chain polymers are usually ________.

At low temperatures, long-chain polymers are usually ________.

• glasses

• thermoplastics

• very flexible

• highly cross-linked

• gummy

Shyshy   57   1 Reply

GOJES

A polymer with a high degree of crystallinity is usually ________ than a similar polymer with a ...

A polymer with a high degree of crystallinity is usually ________ than a similar polymer with a ...

[html]A polymer with a high degree of crystallinity is usually ________ than a similar polymer with a lower degree of crystallinity.

• less dense and less rigid

• less dense but stronger

• denser and more rigid

• less dense but more rigid

• dens

darla   58   2 Replies

5 / 5

darla

Cross-linking typically ________ the Tm of a polymer.

Cross-linking typically ________ the Tm of a polymer.

Cross-linking typically ________ the Tm of a polymer.

sunnywwang   65   1 Reply

leavemealone

________ are added to polymers to make them more flexible.

________ are added to polymers to make them more flexible.

________ are added to polymers to make them more flexible.

jayjayhussle310   52   2 Replies

jayjayhussle310

The Tg of a polymer is its ________.

The Tg of a polymer is its ________.

The Tg of a polymer is its ________.

• growth temperature

• lattice relaxation time

• Gaussian thermocouple

• glass transition temperature

• gum transition temperature

pbjt   60   1 Reply

steski89

Provide the structure of each monomer unit used in the formation of the following polymer.

Provide the structure of each monomer unit used in the formation of the following polymer.

[html]Provide the structure of each monomer unit used in the formation of the following polymer.

luhhshortiee   59   2 Replies

luhhshortiee

Which of the following commercial polymers are polyesters?1) Lexan2) Dacron3) Saran4) Orlon5) PET

Which of the following commercial polymers are polyesters?1) Lexan2) Dacron3) Saran4) Orlon5) PET

[html]Which of the following commercial polymers are polyesters?

1) Lexan

Lola617   58   2 Replies

Lola617

Which of the following terms best describes the structural relationship between Nylon 6 and Nylon 6,6?

Which of the following terms best describes the structural relationship between Nylon 6 and Nylon 6,6?

Which of the following terms best describes the structural relationship between Nylon 6 and Nylon 6,6?

• identical

• conformers

• diastereomers

• enantiomers

• structural isomers

Barbmat   54   1 Reply

arusha_momin

Draw the products which would result if poly(ethylene terephthalate) were hydrolyzed in hot aqueous NaOH.

Draw the products which would result if poly(ethylene terephthalate) were hydrolyzed in hot aqueous NaOH.

Draw the products which would result if poly(ethylene terephthalate) were hydrolyzed in hot aqueous NaOH.

Ravenfaust   107   2 Replies

5 / 5

Ravenfaust

Poly(lactic acid) is a biodegradable polymer that is used in 3D printing. It can be made through the ...

Poly(lactic acid) is a biodegradable polymer that is used in 3D printing. It can be made through the ...

[html]Poly(lactic acid) is a biodegradable polymer that is used in 3D printing. It can be made through the polymerization of L-lactic acid (below). Will the polymer be a step-growth or chain-growth polymer?

Brad_was   74   1 Reply

sanjidhaa

Poly(lactic acid) is a biodegradable polymer that is used in 3D printing. It can be made through the ...

Poly(lactic acid) is a biodegradable polymer that is used in 3D printing. It can be made through the ...

[html]Poly(lactic acid) is a biodegradable polymer that is used in 3D printing. It can be made through the polymerization of L-lactic acid (below). Draw three repeat units of the polymer that is formed with the appropriate stereochemistry.

sophiegiu   80   2 Replies

5 / 5

sophiegiu

Provide the structure of -caprolactam, the monomer from which Nylon 6 is formed.

Provide the structure of -caprolactam, the monomer from which Nylon 6 is formed.

Provide the structure of ε-caprolactam, the monomer from which Nylon 6 is formed.

kcamplin95   52   1 Reply

Suliman

Orlon is another name for what polymer?

Orlon is another name for what polymer?

Orlon is another name for what polymer?

• polystyrene

• poly(acrylonitrile)

• poly(methyl α-cyanoacrylate)

• poly(methyl α-methylacrylate)

• polypropylene

loweba1   62   1 Reply

RichardSoags

What type of polymer is formed by the transesterification of dimethyl terephthalate with ...

What type of polymer is formed by the transesterification of dimethyl terephthalate with ...

What type of polymer is formed by the transesterification of dimethyl terephthalate with 1,4-di(hydroxymethyl)cyclohexane?

• polyurethane

• polyethylene

• polyester

• polyamide

• polycarbonate

Tbreland05   54   3 Replies

s0073123

What type of polymer uses a diisocyanate as one of its monomer components?

What type of polymer uses a diisocyanate as one of its monomer components?

What type of polymer uses a diisocyanate as one of its monomer components?

• polycarbonates

• polyurethanes

• polyamides

• polyesters

• none of the above

LeaP   53   1 Reply

mnk

What type of polymer uses phosgene as one of its monomer components?

What type of polymer uses phosgene as one of its monomer components?

What type of polymer uses phosgene as one of its monomer components?

• polycarbonates

• polyamides

• polyurethanes

• polyesters

• none of the above

Hellohi21   51   2 Replies

Hellohi21

What type of polymer is formed from lactam monomers?

What type of polymer is formed from lactam monomers?

What type of polymer is formed from lactam monomers?

• polycarbonates

• polyurethanes

• polyesters

• polyamides

• none of the above

Ravenfaust   48   1 Reply

belledejour86