Laser_3

What is the molarity of a solution prepared containing 5.6 g of sodium perchlorate (NaClO4) in 0.50

What is the molarity of a solution prepared containing 5.6 g of sodium perchlorate (NaClO4) in 0.50

 What is the molarity of a solution prepared containing 5.6 g of sodium perchlorate (NaClO4) in 0.50 L?

Madresa   85   1 Reply

bolbol

What is the radioactive particle released in the following nuclear equation?

What is the radioactive particle released in the following nuclear equation?

9038Sr 9039Y + ?
15974Sr 15572Hf + ?

denver413   922   1 Reply

firefighter118

What is the volume (in liters) of 1.00 mole of krypton gas that has a pressure of 1140 mm Hg and a

What is the volume (in liters) of 1.00 mole of krypton gas that has a pressure of 1140 mm Hg and a

What is the volume (in liters) of 1.00 mole of krypton gas that has a pressure of 1140 mm Hg and a temperature of 25.0°C? (R= 0.0821 L atm/ mol K)​

Alofy   114   1 Reply

bio_man

where 126 and 135 are counted numbers and 1.364 and 0.8951 are measured numbers

where 126 and 135 are counted numbers and 1.364 and 0.8951 are measured numbers

where 126 and 135 are counted numbers and 1.364 and 0.8951 are measured numbers is

bfresh   1861   N/A

bfresh

Which ion does not have a noble gas configuration in its ground state?

Which ion does not have a noble gas configuration in its ground state?

I am having trouble figuring this problem out, I would appreciate some help.

callie jore   768   1 Reply

Laser_3

Which of the changes listed will shift the equilibrium to the right for the following reversible re

Which of the changes listed will shift the equilibrium to the right for the following reversible re

Which of the changes listed will shift the equilibrium to the right for the following reversible reaction?
 CH4(g) + H2O(g) + heat  CO(g) + 3 H2(g)

haley1212   87   1 Reply

90daytona

Which of the following best represents the shape of the 2s atomic orbital of carbon?

Which of the following best represents the shape of the 2s atomic orbital of carbon?

 Which of the following best represents the shape of the 2s atomic orbital of carbon?
 
   

bbless888   61   1 Reply

beast8

Which of the following compounds can be prepared by a mixed aldol condensation by treatment of a ...

Which of the following compounds can be prepared by a mixed aldol condensation by treatment of a ...

 Which of the following compounds can be prepared by a mixed aldol condensation by treatment of a mixture of two carbonyl compounds and NaOH?
 
   

tpaige12   45   1 Reply

tomomb

Which of the following elements would be most likely to form pi bonds?

Which of the following elements would be most likely to form pi bonds?

 Which of the following elements would be most likely to form pi bonds?


F

C

Si

P

Cl

Annonn   70   1 Reply

bio_man

Which of the following entities is the strongest oxidizing agent?

Which of the following entities is the strongest oxidizing agent?

1. Which of the following entities is the strongest oxidizing agent?
A. Y
B. Z
C. Y3+
D. Z2+

2. Which of the following entities is the most likely to lose electrons in a given environment?
A. Y
B. Z
C.

EA   808   1 Reply

mp5995

Which of the following has the highest Keq for enolization?

Which of the following has the highest Keq for enolization?

 Which of the following has the highest Keq for enolization?
 
   

nlebeau   53   1 Reply

michelleb28

write a word equation for one reversible reaction?

write a word equation for one reversible reaction?

write a word equation for one reversible reaction
the solvent in this reaction is?
the solute in this reaction is?
the solution in this reaction is?
why is this a reversible reaction?

riramirez   359   1 Reply

risingxun

Write the ionic charge for each of the following ions as predicted from the group numbers in the pe

Write the ionic charge for each of the following ions as predicted from the group numbers in the pe

 Write the ionic charge for each of the following ions as predicted from the group numbers in the periodic table.


a.  aluminum ion                           

90daytona   94   1 Reply

bolbol

"Chlorine-type" laundry bleaches are in reality aqueous solutions of ________.

"Chlorine-type" laundry bleaches are in reality aqueous solutions of ________.

"Chlorine-type" laundry bleaches are in reality aqueous solutions of ________.

▸ NaOCl

▸ NaClO3

▸ HOCl

▸ HOClO3

▸ NaClO2

Diamondlove   56   1 Reply

Ctownsend

"Halogen" means "soluble salts."

"Halogen" means "soluble salts."

"Halogen" means "soluble salts."

▸ true

▸ false

Diamondlove   37   1 Reply

larrybrads

"No two electrons in an atom can have the same four quantum numbers" is a statement of

"No two electrons in an atom can have the same four quantum numbers" is a statement of

"No two electrons in an atom can have the same four quantum numbers" is a statement of

▸ the Pauli exclusion principle.

▸ Bohr's equation.

▸ Hund's rule.

▸ de Broglie's relation.

▸ Dalton's atomic theory.

westleafs   36   1 Reply

nancy123

"No two electrons in an atom can have the same four quantum numbers" is a statement of

"No two electrons in an atom can have the same four quantum numbers" is a statement of

"No two electrons in an atom can have the same four quantum numbers" is a statement of

▸ the Pauli exclusion principle.

▸ Bohr's equation.

▸ Hund's rule.

▸ de Broglie's relation.

▸ Dalton's atomic theory.

kyaramarie318   12   1 Reply

knh1473

"One places electrons into orbitals one by one from low energy to high energy" is one way of stating the:

"One places electrons into orbitals one by one from low energy to high energy" is one way of stating the:

"One places electrons into orbitals one by one from low energy to high energy" is one way of stating the:

▸ Aufbau principle

▸ Hund's Rule

▸ Heisenberg Principle

▸ Pauli Exclusion Principle

▸ Rydberg's Principle

jayyyz214   102   1 Reply

dora19

"Red" phosphorus is insoluble in carbon disulfide, has a broad melting range and a very low vapor ...

"Red" phosphorus is insoluble in carbon disulfide, has a broad melting range and a very low vapor ...

[html]"Red" phosphorus is insoluble in carbon disulfide, has a broad melting range and a very low vapor pressure, and does not conduct electricity. This evidence suggests that this substance is probably:

▸ crystalline and metallic

▸ a crystal of P

Mario   78   1 Reply

ruthm17

"Super" glues are typically composed of what polymer?

"Super" glues are typically composed of what polymer?

"Super" glues are typically composed of what polymer?

• polypropylene

• poly(methyl α-methylacrylate)

• polystyrene

• poly(methyl α-cyanoacrylate)

• poly(acrylonitrile)

jkaur2017   53   2 Replies

jkaur2017

"The pressure of an ideal gas is inversely proportional to its volume at constant temperature and ...

"The pressure of an ideal gas is inversely proportional to its volume at constant temperature and ...

"The pressure of an ideal gas is inversely proportional to its volume at constant temperature and number of moles" is a statement of ________ law.

▸ Charles's

▸ Boyle's

▸ Amontons's

▸ Avogadro's

▸ Gay-Lussac's

zer0latency   13   1 Reply

packar11

"The volume of an ideal gas is directly proportional to its absolute temperature at constant ...

"The volume of an ideal gas is directly proportional to its absolute temperature at constant ...

"The volume of an ideal gas is directly proportional to its absolute temperature at constant pressure and number of moles" is a statement of ________ law.

▸ Charles's

▸ Boyle's

▸ Dalton's

▸ Avogadro's

▸ Gay-Lussac's

jack103106   14   1 Reply

BlondieX

"The volume of an ideal gas is directly proportional to the number of moles of the gas at constant ...

"The volume of an ideal gas is directly proportional to the number of moles of the gas at constant ...

"The volume of an ideal gas is directly proportional to the number of moles of the gas at constant temperature and pressure" is a statement of ________ law.

▸ Charles's

▸ Boyle's

▸ Dalton's

▸ Avogadro's

▸ Gay-Lussac's

AsadQ1   12   1 Reply

ggyxxcool

"Washing soda" (sodium carbonate) may be used to "soften" water by the removal of certain ions ...

"Washing soda" (sodium carbonate) may be used to "soften" water by the removal of certain ions ...

[html]"Washing soda" (sodium carbonate) may be used to "soften" water by the removal of certain ions that would otherwise react with common soaps. When the "hardness" is due to calcium ion, the "softening" process may be represented as:  Ca

arlinguillen   62   1 Reply

njn;l

"Write an equation for the response of H2CO3/HCO3- to the addition of H3O+ ions."?

"Write an equation for the response of H2CO3/HCO3- to the addition of H3O+ ions."?

The question is"Write an equation for the response of H2CO3/HCO3- to the addition of H3O+ ions."

I have no idea what I am suppose to do or what the answer could possibly be.

What is she asking me to do???

Can someone please help explain this probl

smooch92   471   1 Reply

irina

% ionization of asprin

% ionization of asprin

#1   what is the %  of aspirin ionized to [A-] at pH = 7
 
I have no idea how to set this problem up ?

 I said  [A-] / [HA] = 10^(pH - pKa) so then I did [A-] / [HA] = 10^(7 - 3.5) = 3.1 x 10^3  but I have n

Jessc   239   1 Reply

bio_man

% yield calculation

% yield calculation

2KClO3  2KCl + 3O2

Theoretically I should get 1.86g of oxygen out of 4.74g of 2KClO3 but if I only get 1.51g of oxygen what is the percent yield.
Could someone walk me through what I'm meant to do because I have three

biobabe   799   2 Replies

biobabe

"A progressive systemic skeletal disease characterized by low bone mass and micro ...

"A progressive systemic skeletal disease characterized by low bone mass and micro ...

"A progressive systemic skeletal disease characterized by low bone mass and micro architectural deterioration of bone tissue, with a consequent increase in bone fragility and susceptible to fracture" describes which of the following disease

steden   112   1 Reply

ford1001

"Buffered" solutions are resistant to pH changes, even when small amounts of strong acid ...

"Buffered" solutions are resistant to pH changes, even when small amounts of strong acid ...

"Buffered" solutions are resistant to pH changes, even when small amounts of strong acid or base are added to them.
State whether this is true or false. Thanks!

cynthiaa   111   1 Reply

matics

"Equal volumes of different gases at the same temperature and pressure contain the same molar amount

"Equal volumes of different gases at the same temperature and pressure contain the same molar amount

"Equal volumes of different gases at the same temperature and pressure contain the same molar amounts" is another way of stating
A) Avogadro's law.
B) Boyle's law.
C) Charles' law.
D) Graham's law.

Whelan   874   1 Reply

hbutler2

"Glycerol" is the common name for

"Glycerol" is the common name for

"Glycerol" is the common name for
A) ethanol.
B) 2-propanol.
C) 1, 2-ethanediol.
D) 1, 2, 3-propanetriol.

Whelan   395   1 Reply

hbutler2

"If a stress is applied to a reaction mixture at equilibrium, the reaction occurs in the direction t

"If a stress is applied to a reaction mixture at equilibrium, the reaction occurs in the direction t

"If a stress is applied to a reaction mixture at equilibrium, the reaction occurs in the direction that will relieve the stress." This statement is called
A) the Third Law of Thermodynamics.
B) the Law of Combining Volumes.
C

Whelan   1068   1 Reply

hbutler2

"Isothermal" means ________. (Multiple Choice)

"Isothermal" means ________. (Multiple Choice)

"Isothermal" means ________.
A) at variable temperature and pressure conditions
B) at ideal temperature and pressure conditions
C) that ΔHrxn = 0
D) at constant pressure
E) at constant temperature

chemDO   808   3 Replies

shutchka

"Isotopes" are atoms with the same number of ________ but different number of ________.

"Isotopes" are atoms with the same number of ________ but different number of ________.

"Isotopes" are atoms with the same number of ________ but different number of ________.
A) electrons, neutrons
B) neutrons, protons
C) protons, electrons
D) protons, neutrons

Whelan   499   1 Reply

hbutler2

"On water" procedures utilize rapid stirring to produce a suspension of reactants with ...

"On water" procedures utilize rapid stirring to produce a suspension of reactants with ...

"On water" procedures utilize rapid stirring to produce a suspension of reactants with large surface areas to increase reaction rates.

MannyD   179   1 Reply

tropicaux

"Pure" rainfall (rainfall undisturbed by human influences) has a pH of approximately ...

"Pure" rainfall (rainfall undisturbed by human influences) has a pH of approximately ...

"Pure" rainfall (rainfall undisturbed by human influences) has a pH of approximately 5.6.  The pH of rain in some areas has been measured at 2.6.  The acidity of this rain is
A) 0.3 times that of normal rain.
B) 3 times

Gurjeet   150   2 Replies

Gurjeet

"Salt money" paid to laborers in Roman times gives rise to what modern term?

"Salt money" paid to laborers in Roman times gives rise to what modern term?

"Salt money" paid to laborers in Roman times gives rise to what modern term?
A) salary
B) salt of the earth
C) salt rations
D) solarium
E) none of the above

OldSpice   563   3 Replies

Electric

"Soldier's disease" after the U.S. Civil War was

"Soldier's disease" after the U.S. Civil War was

"Soldier's disease" after the U.S. Civil War was
A) dysentery.
B) infection.
C) blindness.
D) morphine addiction.

Gurjeet   126   2 Replies

Gurjeet

"When filling orbitals of equal energy, electrons fill them singly first with pa

"When filling orbitals of equal energy, electrons fill them singly first with pa

"When filling orbitals of equal energy, electrons fill them singly first with parallel spins." This is known as:
A) Hund's rule.
B) Pauli exclusion principle.
C) Bohr's model.
D) Ground state.
E) none of t

Think   791   1 Reply

mel!811

"Wood alcohol" is the common name for

"Wood alcohol" is the common name for

"Wood alcohol" is the common name for
A) methanol.
B) ethanol.
C) 2-propanol.
D) 1, 2-ethanediol.

Whelan   437   1 Reply

hbutler2