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WARRIOR [948]
3 years ago
14

explain why iron can displace copper from copper II nitrate solution, but copper cannot displace iron from iron III nitrate solu

tion
Chemistry
1 answer:
mihalych1998 [28]3 years ago
4 0

Answer:

Iron metal is more reactive than copper.

Explanation:

Iron metal is more reactive than copper. ... Cu is less reactive than iron, therefore, cannot replace iron from iron sulphate (FeSO4). we have already seen that iron is more reactive than copper. So that means that in this reaction, copper is less reactive than iron. That means copper cannot displace iron. It cannot kick out iron from a sulfate.

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Which elements have similar chemical properties?
Elden [556K]

Answer:

d) He, Ar, Kr

Explanation:

To have similar chemical properties, elements must belong to the same period on the periodic table.

As a generally periodic trend, elements within the same group, have the same chemical properties.

So, the correct answer choice will draft elements from the same group.

  • He, Ar and Kr belongs to the group of elements called the noble gases.
  • They are an unreactive group of elements.
  • They are found in the last group on the periodic table.
  • These elements do not readily combine with other elements.
7 0
3 years ago
Question Completion Status:
kolezko [41]

Answer:

the quantity of heat required to raise the temperature of 1 gram of a substance by 1 C

plz mark as brainliest and follow me

4 0
3 years ago
Which of these objects have potential energy?
Korolek [52]

Answer:

it's C. but the sentence is incorrect I think it should be a ball "in" someone's hand

Explanation:

cause potential energy is the energy that is stored in an object due to its position relative to some zero position. An object possesses gravitational potential energy if it is positioned at a height above (or below) the zero height.

8 0
3 years ago
Given a force of 88 N and an acceleration of 4 m/s2, what is the mass? *
pantera1 [17]
22. Mass=Force/acceleration or M=F/a. So the force of this equation would be 88N and the acceleration would be 4m/s^2 so the mass in the problem would be 22.
7 0
3 years ago
Hydrogen peroxide decomposes spontaneously to yield water and oxygen gas according to the reaction equation 2 H 2 O 2 ( aq ) ⟶ 2
Ede4ka [16]

Answer:

The value of temperature for unanalysed reaction is 456.1 K

Explanation:

Step 1: Data given

The activation energy of uncatalyzed reaction is 75.0 kJ/mol.

The activation energy of catalyzed reaction is 49.0 kJ/mol.

The temperature for catalyzed reaction is  25 °C

<u>Step 2:</u>  The balanced equation

2 H2O2(aq) ⟶ 2H2O(l) + O2(g)

<u>Step 3:</u> According to Arrhenius equation:

k = Ae ^ (-Ea/RT)

⇒ with k = the rate constant

⇒ with Ea = the activation energy = 49 kJ/mol

⇒ with R = the universal gas constant = 8.314 J/mol*K

⇒ with T = the temperature  = 298 K

For uncatalyzed reaction, the rate constant is calculated as:

k(uncatalyzed) = Ae ^ (-75000/8.314 J/mol*K * T)

k(uncatalyzed) = Ae ^ (-9020.93/T)

For catalyzed reaction, the rate constant is calculated as:

k(catalyzed) = Ae ^ (-Ea(catalyzed)/RT))

 ⇒ with Ea(catalyzed) = 49000 J/mol

 ⇒ with T = 298 K

k(catalyzed) = Ae ^ (-49000J/(8.314J/mol *K * 298K))

k(catalyzed) = Ae ^(-19.78)

k(catalyzed) = k(uncatalyzed)

Ae^(-19.78) = = Ae ^ (-9020.93/T)

-19.78 = -9020.93/T

T = -9020.93/-19.78

T = 456.1 K

The value of temperature for unanalysed reaction is 456.1 K

8 0
3 years ago
Read 2 more answers
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