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The distinguishing characteristic of all electrolyte solutions is that they

The distinguishing characteristic of all electrolyte solutions is that they

The distinguishing characteristic of all electrolyte solutions is that they

▸ contain molecules.

▸ conduct electricity.

▸ react with other solutions.

▸ always contain acids.

▸ conduct heat.

Chemistry   gringoboy6   6   strawberry8971   4 days ago

The substance HClO4 is considered to be

The substance HClO4 is considered to be

The substance HClO4 is considered to be

▸ a weak acid.

▸ a weak base.

▸ a strong acid.

▸ a strong base.

▸ neither acidic nor basic.

Chemistry   Jimmyhighroller   6   harrison5692   4 days ago

The substance NH3 is considered to be

The substance NH3 is considered to be

The substance NH3 is considered to be

▸ a weak acid.

▸ a weak base.

▸ a strong acid.

▸ a strong base.

▸ neither acidic nor basic.

Chemistry   Yukinara   6   hmging94   4 days ago

What is oxidized in the following reaction?Fe + Ag2O FeO + 2Ag

What is oxidized in the following reaction?Fe + Ag2O FeO + 2Ag

What is oxidized in the following reaction?Fe + Ag2O → FeO + 2Ag

▸ Ag

▸ Ag2O

▸ Fe

▸ FeO

▸ 2Ag

Chemistry   deroth   6   tpriest1   4 days ago

What is the net ionic equation if sodium sulfate is mixed with barium hydroxide?

What is the net ionic equation if sodium sulfate is mixed with barium hydroxide?

[html]What is the net ionic equation if sodium sulfate is mixed with barium hydroxide?

▸ 2Na+(aq) + SO42–(aq) → Na2SO4(s)

▸ Na+(aq) + OH–(aq) → NaOH(s)

▸ 2Ba+(aq) + SO42–(aq) → Ba

Chemistry   becky28   6   culwri204   4 days ago

What is the oxidation number of N in K3Fe(CN)6?

What is the oxidation number of N in K3Fe(CN)6?

What is the oxidation number of N in K3Fe(CN)6?

▸ +3

▸ –3

▸ +4

▸ –5

▸ +1

Chemistry   ang359   6   sania24   4 days ago

What is the oxidation number of N in N2H4?

What is the oxidation number of N in N2H4?

What is the oxidation number of N in N2H4?

▸ +4

▸ +2

▸ –2

▸ –4

▸ 0

Chemistry   janeniz   6   Jessicav1126   4 days ago

What is the oxidation number of oxygen in KMnO4?

What is the oxidation number of oxygen in KMnO4?

What is the oxidation number of oxygen in KMnO4?

▸ +1

▸ –8

▸ +5

▸ –2

▸ +3

Chemistry   citycyborg   6   tswinson3   4 days ago

What is the oxidation number of oxygen in potassium superoxide, KO2?

What is the oxidation number of oxygen in potassium superoxide, KO2?

What is the oxidation number of oxygen in potassium superoxide, KO2?

▸ +1

▸ 0

▸ –½

▸ +½

▸ –2

Chemistry   js56154   6   casinogurl   4 days ago

What is the oxidizing agent in the following reaction?5Fe2+(aq) + MnO4(aq) + 8H+(aq) 5Fe3+(aq) + ...

What is the oxidizing agent in the following reaction?5Fe2+(aq) + MnO4(aq) + 8H+(aq) 5Fe3+(aq) + ...

[html]What is the oxidizing agent in the following reaction?5Fe2+(aq) + MnO4–(aq) + 8H+(aq) → 5Fe3+(aq) + Mn2+(aq) + 4H2O(l)

▸ Fe2+

▸ MnO4–

▸ H+

▸

Chemistry   opfaluyi   6   avi420   4 days ago

Which accurately characterizes all nonelectrolyte solutions?

Which accurately characterizes all nonelectrolyte solutions?

Which accurately characterizes all nonelectrolyte solutions?

▸ Nonelectrolyte solutions contain molecules.

▸ Nonelectrolyte solutions conduct electricity.

▸ Nonelectrolyte solutions react with other solutions.

▸ Nonelectrolyte solutions do not conduct electricity.

▸ Nonelectrolyte solutions conduct heat.

Chemistry   ryanolson41   6   xoxoitaliangurl   4 days ago

Which is a weak base?

Which is a weak base?

Which is a weak base?

▸ NH3

▸ Ca(OH)2

▸ Ba(OH)2

▸ NaOH

▸ CH3COOH

Chemistry   rsteel   6   rainbow12   4 days ago

Which is present in all aqueous Brnsted acid solutions?

Which is present in all aqueous Brnsted acid solutions?

Which is present in all aqueous Brønsted acid solutions?

▸ H2

▸ H+

▸ OH–

▸ H2SO4

▸ Cl–

Chemistry   tawhid111   6   nemisis   4 days ago

Which of the following equations is not a redox reaction?

Which of the following equations is not a redox reaction?

[html]Which of the following equations is not a redox reaction?

▸ 2H2(g) + O2(g) → 2H2O(l)

▸ Zn(s) + H2SO4(aq) → ZnSO4(aq) + H2(g)

▸ H2O(l) + NH3(g) → NH4+(aq

Chemistry   nurse15   6   sillysquirrel   4 days ago

Which of the following is insoluble in water?

Which of the following is insoluble in water?

Which of the following is insoluble in water?

▸ Li2CO3

▸ NaOH

▸ PbCl2

▸ Ba(OH)2

▸ (NH4)2S

Chemistry   CLopez678   6   firebug210   4 days ago

Which of these chemical equations describes a disproportionation reaction?

Which of these chemical equations describes a disproportionation reaction?

[html]Which of these chemical equations describes a disproportionation reaction?

▸ 2C2H6(g) + 7O2(g) → 4CO2(g) + 6H2O(l)

▸ 2KBr(aq) + Cl2(g) → 2KCl(aq) + Br2(l)

▸ 2H2O2(aq) → 2

Chemistry   alireads   6   stanka82   4 days ago

Which of these chemical equations describes a precipitation reaction?

Which of these chemical equations describes a precipitation reaction?

[html]Which of these chemical equations describes a precipitation reaction?

▸ 2H2(g) + O2(g) → 2H2O(l)

▸ CaBr2(aq) + H2SO4(aq) → CaSO4(s) + 2HBr(g)

▸ 2KNO3(s) → 2KNO2(s) + O

Chemistry   DenverMade   6   ttoe81   4 days ago

Which of these compounds is a weak electrolyte?

Which of these compounds is a weak electrolyte?

Which of these compounds is a weak electrolyte?

▸ HCl

▸ NH3

▸ C6H12O6 (glucose)

▸ N2

▸ KCl

Chemistry   supersour   6   texasboy3   4 days ago

Which of these equations does not represent an oxidation-reduction reaction?

Which of these equations does not represent an oxidation-reduction reaction?

[html]Which of these equations does not represent an oxidation-reduction reaction?

▸ 3Al + 6HCl → 3H2 + AlCl3

▸ 2H2O → 2H2 + O2

▸ 2NaCl + Pb(NO3)2→ PbCl2 + 2NaNO3

▸ 2NaI + Br2 → 2NaBr + I2

▸ Cu(NO3)2

Chemistry   bananas87   6   frithne   4 days ago

Which represents the result of mixing equal volumes of 1 M aluminum chloride, 2 M magnesium ...

Which represents the result of mixing equal volumes of 1 M aluminum chloride, 2 M magnesium ...

[html]Which represents the result of mixing equal volumes of 1 M aluminum chloride, 2 M magnesium chloride, and 1 M potassium chloride solution? (Each sphere represents 1 mol of ions.)

▸

Chemistry   samanthakay   6   doublekud   4 days ago

Which solution is the most acidic?

Which solution is the most acidic?

Which solution is the most acidic?

▸ 1 × 10–4 M H+

▸ 1 × 10–9 M H+

▸ 1 × 10–3 M H+

▸ 1 × 10–7 M H+

▸ 1 × 10–10 M H+

Chemistry   texasmade2550   6   BlondieX   4 days ago

An electrolyte is a substance that dissolves in water to yield a solution that conducts electricity.

An electrolyte is a substance that dissolves in water to yield a solution that conducts electricity.

An electrolyte is a substance that dissolves in water to yield a solution that conducts electricity.

▸ true

▸ false

Chemistry   HoracioMo   6   inhibitor128   4 days ago

H3PO4 is a strong acid.

H3PO4 is a strong acid.

H3PO4 is a strong acid.

▸ true

▸ false

Chemistry   Chocolate_Pie   6   slmseuf1105   4 days ago

A 275-g sample of nickel at l00.0C is placed in 100.0 g of water at 22.0C. What is the final ...

A 275-g sample of nickel at l00.0C is placed in 100.0 g of water at 22.0C. What is the final ...

A 275-g sample of nickel at l00.0°C is placed in 100.0 g of water at 22.0°C. What is the final temperature of the water? Assume no heat transfer with the surroundings. The specific heat of nickel is 0.444 J/g·°C and the specific heat of water is 4.184 J/g·°C.

▸ 39.6°C

▸ 40.8°C

▸ 61.0°C

▸ 79.2°C

▸ 82.4°C

Chemistry   realgraverobb   6   letssdoothiss   4 days ago

A 307-g sample of an unknown mineral was heated to 98.7C and placed into a calorimeter containing ...

A 307-g sample of an unknown mineral was heated to 98.7C and placed into a calorimeter containing ...

[html]A 307-g sample of an unknown mineral was heated to 98.7°C and placed into a calorimeter containing 72.4 g of water at 23.6°C. The heat capacity of the calorimeter was 15.7 J/°C. The final temperature in the calorimeter was 32.4°C. What is the specific heat capacity of the mineral?

▸ 0.124 J/g·°C

▸ 0.131 J/g·°C

▸ 0.138 J/g·°C

▸ 0.145 J/g·°C

▸ None of these choices is corre

Chemistry   cmartinez034   6   chevy87   4 days ago

A system receives 575 J of heat and delivers 424 J of work. What is the change in the internal ...

A system receives 575 J of heat and delivers 424 J of work. What is the change in the internal ...

A system receives 575 J of heat and delivers 424 J of work. What is the change in the internal energy, ΔU, of the system?

▸ –150. J

▸ 150. J

▸ –1000. J

▸ 1000. J

▸ 575 J

Chemistry   realgraverobb   6   jewelzzP   4 days ago

An endothermic reaction causes the surroundings to

An endothermic reaction causes the surroundings to

An endothermic reaction causes the surroundings to

▸ warm up.

▸ become acidic.

▸ condense.

▸ decrease in temperature.

▸ release CO2.

Chemistry   AsadQ1   6   chandlerdeane   4 days ago

For which reaction is H approximately (or exactly) equal to U?

For which reaction is H approximately (or exactly) equal to U?

[html]For which reaction is ΔH approximately (or exactly) equal to ΔU?

▸ H2( g) + Br2( g) → 2HBr( g)

▸ H2O( s) → H2O( g)

▸ CaCO3( g) → CaO( g) + CO2( g)

▸ 2H( g) + O( s) → H2O( l)

▸ CH

Chemistry   Passa Caglia   6   dioxy186   4 days ago

Glycine, C2H5O2N, is important for biological energy. The combustion reaction of glycine is ...

Glycine, C2H5O2N, is important for biological energy. The combustion reaction of glycine is ...

[html]Glycine, C2H5O2N, is important for biological energy. The combustion reaction of glycine is described by the following thermochemical equation.4C2H5O2N(s) + 9O2(g) → 8CO2(l) + 10H2O(g) + 2N2(g) ΔH°rxn

Chemistry   JZ240   6   ixi12   4 days ago

How much heat is released if 35.0 g of ethanol (C2H5OH) burns in excess oxygen? C2H5OH(l) + 3O2(g) ...

How much heat is released if 35.0 g of ethanol (C2H5OH) burns in excess oxygen? C2H5OH(l) + 3O2(g) ...

[html]How much heat is released if 35.0 g of ethanol (C2H5OH) burns in excess oxygen? C2H5OH(l) + 3O2(g) → 2CO2(g) + 3H2O(l)  ΔH°rxn = –1367 kJ/mol

▸ 1797 kJ

▸ 1367 kJ

▸ 9.61 × 10–4 kJ

▸ 4.78 × 104 kJ

▸ 1040 kJ[

Chemistry   mktrujillo   6   elisebarnett   4 days ago

How much heat is released if 7.15 g CaO(s) is added to 152 g of H2O(l)? CaO(s) + H2O(l) Ca(OH)2(s) ...

How much heat is released if 7.15 g CaO(s) is added to 152 g of H2O(l)? CaO(s) + H2O(l) Ca(OH)2(s) ...

How much heat is released if 7.15 g CaO(s) is added to 152 g of H2O(l)? CaO(s) + H2O(l) → Ca(OH)2(s)  ΔH°rxn = –64.8 kJ/mol

▸ 7.68 kJ

▸ 8.26 kJ

▸ 508 kJ

▸ 547 kJ

▸ 555 kJ

Chemistry   Ryan37sport   6   ochie92   4 days ago

If, as a pioneer, you wished to warm your room by taking an object heated on top of a pot-bellied ...

If, as a pioneer, you wished to warm your room by taking an object heated on top of a pot-bellied ...

[html]If, as a pioneer, you wished to warm your room by taking an object heated on top of a pot-bellied stove to it, which of the following 15-pound objects, each heated to 100°C, would be the best choice? The specific heat capacity (in J/g·°C) for each substance is given in parentheses. Iron (0.450), copper (0.387), granite (0.79), gold (0.129), water (4.184).

▸ iron

▸ copper

▸

Chemistry   capriciossa   6   BlondieX   4 days ago

In which process is H = U?

In which process is H = U?

[html]In which process is ΔH = ΔU?

▸ Two moles of ammonia gas are cooled from 325°C to 300°C at a constant pressure of 1.2 atm.

▸ One gram of water is vaporized at 100°C and 1 atm.

▸ Two moles of hydrogen iodide gas react to form hydrogen gas and iodine gas in a 40-L container.

▸ Solid calcium carbonate is heated to form solid calcium oxide and carbon dioxide g

Chemistry   usmc2rn   6   tk9790   4 days ago

Naphthalene combustion may be used to calibrate the heat capacity of a bomb calorimeter. The heat of ...

Naphthalene combustion may be used to calibrate the heat capacity of a bomb calorimeter. The heat of ...

[html]Naphthalene combustion may be used to calibrate the heat capacity of a bomb calorimeter. The heat of combustion of naphthalene is –40.1 kJ/g. When 0.8210 g of naphthalene was burned in a bomb calorimeter containing 1.000 kg of water, a temperature rise of 4.21°C was observed. What is the heat capacity of the bomb calorimeter excluding the water?

▸ 32.9 kJ/°C

▸ 7.8 kJ/°C

▸ 3

Chemistry   frustelle   6   dcmc92   4 days ago

Octane (C8H18) undergoes combustion according to the following thermochemical equation.2C8H18(l) + ...

Octane (C8H18) undergoes combustion according to the following thermochemical equation.2C8H18(l) + ...

[html]Octane (C8H18) undergoes combustion according to the following thermochemical equation.2C8H18(l) + 25O2(g) → 16CO2(g) + 18H2O(l)   ΔH°rxn = –1.0940 × 104 kJ/molWhat is the standard enthalpy of formation of liqui

Chemistry   youngbloodz   6   dreamkhei   4 days ago

Ozone (O3) in the atmosphere can be converted to oxygen gas by reaction with nitric oxide (NO). ...

Ozone (O3) in the atmosphere can be converted to oxygen gas by reaction with nitric oxide (NO). ...

[html]Ozone (O3) in the atmosphere can be converted to oxygen gas by reaction with nitric oxide (NO). (Nitrogen dioxide is also produced in the reaction.)  What is the enthalpy change when 8.50 L of ozone at a pressure of 1.00 atm and 25°C reacts with 12.00 L of nitric oxide at the same initial pressure and temperature (R = 0.0821 L atm/mol K)? [ΔH°

Chemistry   meghan.binge   6   OCboba   4 days ago

Pentaborane B5H9(s) burns vigorously in O2 to give B2O3(s) and H2O(l). What is H for the combustion ...

Pentaborane B5H9(s) burns vigorously in O2 to give B2O3(s) and H2O(l). What is H for the combustion ...

[html]Pentaborane B5H9(s) burns vigorously in O2 to give B2O3(s) and H2O(l).  What is ΔH° for the combustion of 1 mol of B5H9(s)?Substance                                    ΔH°f (kJ/mol)B2O3

Chemistry   got2pass   6   elixy19   4 days ago

Styrene, C8H8, is one of the substances used in the production of synthetic rubber. When styrene ...

Styrene, C8H8, is one of the substances used in the production of synthetic rubber. When styrene ...

[html]Styrene, C8H8, is one of the substances used in the production of synthetic rubber. When styrene burns in oxygen to form carbon dioxide and liquid water under standard-state conditions at 25°C, 42.15 kJ are released per gram of styrene.  Find the standard enthalpy of formation of styrene at 25°C.ΔH°f(CO2(g))

Chemistry   badd99   6   CJWVail2   4 days ago

Suppose a 50-g block of silver (specific heat = 0.2350 J/gC) at 100C is placed in contact with a ...

Suppose a 50-g block of silver (specific heat = 0.2350 J/gC) at 100C is placed in contact with a ...

[html]Suppose a 50-g block of silver (specific heat = 0.2350 J/g·°C) at 100°C is placed in contact with a 50-g block of iron (specific heat = 0.4494 J/g·°C) at 0°C, and the two blocks are insulated from the rest of the universe. The final temperature of the two blocks

▸ will be higher than 50°C.

▸ will be lower than 50°C.

▸ will be exactly 50°C.

▸ is unrelated to the composition

Chemistry   Anthonyling   6   mattloftergener   4 days ago

Suppose a new metallic element X is discovered, and its reactions with oxygen gas and chlorine gas ...

Suppose a new metallic element X is discovered, and its reactions with oxygen gas and chlorine gas ...

[html]Suppose a new metallic element X is discovered, and its reactions with oxygen gas and chlorine gas at 298 K are studied.

Chemistry   bklm1234   6   hadu582   4 days ago