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kogti [31]
3 years ago
8

State three properties that make copper suitable for use in plumbing.

Chemistry
1 answer:
marusya05 [52]3 years ago
6 0

- low conductivity

- generally non-toxic

- ductile

- doesn’t corrode as fast as other metals

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If the amount of energy required to break bonds in the reactants is more than the amount of energy released in forming bonds in
Shkiper50 [21]

<u>Answer:</u>

<em>False</em>

<em></em>

<u>Explanation:</u>

The energy required to break a bond is endothermic that is energy is absorbed to break a bond.

The energy is released in the formation of a bond that is energy is released when a bond is formed.

The formula to find the ∆H of the reaction is  

∆H (reaction) = ∆H (bonds Broken) - ∆H (bonds formed)

For example

N_2+3H_2< >2NH_3

N_2  contains one N ≡ N triple bond (Bond breaking 946 KJ per mol)

H_2  contains a single H-H bond (bond breaking 436KJ per mol)

NH_3  contains 3 N-H single bonds (389 KJ per mol)

So,

∆H (bonds broken) = 946 + (3 × 436) = 2254 KJ

∆H (Bonds formed ) = (2 × 3 × 389) = 2334 KJ

So,

∆H (reaction) = 2254 KJ - 2334 KJ  = - 80 KJ

The reaction is Exothermic

In this example we see energy required to break the bond is lesser than energy released in forming the bond.

So we can conclude  if the amount of energy required to break bonds in the reactants is more than the amount of energy released in forming bonds in the products, then the reaction will have a positive change in enthalpy and ∆H  is positive (+∆H) .

8 0
3 years ago
A student told me that it would take 3.5 weeks to read their chemistry textbook from start to finish. How long would it take in
frutty [35]
Answer: 2116800 seconds
5 0
3 years ago
The atomic mass of chlorine represents the mass of the most common naturally occurring isotope of chlorine. Is the statement tru
ozzi
I think the correct answer would be false. The atomic mass of chlorine does not represent the mass of the most common naturally occurring isotope of chlorine. The atomic mass of any compound is the average of the atomic masses of the naturally occurring isotopes of an element. <span />
8 0
4 years ago
Read 2 more answers
What volume in milliliters of concentrated HCl (12 M) is needed to make 1500 mL of a 3.5 M solution?
Leviafan [203]
This process involves the dilution of the 12 molar HCl. To reduce the concentration, we need to set up an equality so that we know how much of the 12M we need to make the 3.5M.

12 moles HCl 3.5 moles HCl
——————— = ———————
1 Liter of Soln ‘x’ Liters of Soln

Notice that the 12 moles over the 1 liter is equal to 12 molar; in doing this, we’re maintaining the concentration of the initial HCl. By setting it equal to the 3.5 over ‘x’, we’re still maintaining the concentration.

After solving, we find that ‘x’ equals 0.292. This value means that in 0.292 liters of our 12 M HCl solution, there are 3.5 moles of HCl. But, we’re not done yet.

0.292 liters of 12 M HCl can make 1 liter of 3.5 M HCl, but the question asks for 1.5 liters. To get this, multiply 0.292 liters by 1.5, and the new result, 0.4375, represents the amount of 12 M HCl required to prepare a 1500 mL 3.5 M HCl solution.
5 0
4 years ago
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Which model of the atom was modeled after the solar system? Question 2 options: Dalton's model Thomson's model Rutherford's mode
Marrrta [24]
It's -Bohr's Model- becuase Dalton I dont think did a model. Thomson's was the "Plum Pudding Model." Ernest Rutherford drew one out(I dont know i dont have a model down though) so it the only one left is Dalton's Model which is it. (Hopefuly)
8 0
3 years ago
Read 2 more answers
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