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Pepsi [2]
3 years ago
12

If 500g of copper melts at 1085°C, at what temperature would 250g of copper melt?

Chemistry
1 answer:
Alex787 [66]3 years ago
6 0

Answer:

the copper would melt at the same temperature no matter how much quantity there is so 1085

Explanation:

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Consider the following system at equilibrium where H° = 111 kJ/mol, and Kc = 6.30, at 723 K.
Rashid [163]

Answer:

1) The value of Kc:

C. remains the same.

2) The value of Qc:

A. is greater than Kc.

3) The reaction must:

B. run in the reverse direction to restablish equilibrium.

4) The concentration of N2 will:

B. decrease.

Explanation:

Hello,

In this case, by means of the Le Chatelier's principle which is based on the shift a chemical reaction could have under some modifications, we have:

1) The value of Kc:

C. remains the same, since it just depend the reaction's thermodynamics as it is computed via:

ln(K)=\frac{\Delta _RG}{RT}

2) The value of Qc:

A. is greater than Kc, since the reaction quotient is:

Qc=\frac{[N_2][H_2]^3}{[NH_3]^2}

Thus, the lower the concentration of ammonia, the higher Qc, making Qc>Kc.

3) The reaction must:

B. run in the reverse direction to restablish equilibrium, since ammonia was withdrawn and should be regenerated to reach the equilibrium.

4) The concentration of N2 will:

B. decrease, since less reactant is forming the products.

Best regards.

8 0
4 years ago
Read 2 more answers
Summarize why the carbon cycle supports the Law of Conservation of Matter
sasho [114]
The Law of Conservation of Matter states that matter cannot be created or destroyed. The carbon cycle is an example of the Law because the same carbon atoms are being recycled through the carbon cycle. ... Carbon is used for energy, and some is stored for growth.
8 0
3 years ago
Prokaryotes and Eukaryotes both fall in<br> the category of living things.<br> True<br> False
WITCHER [35]

Answer:

False

Explanation:

Prokaryotes are a single-celled organism that has not specialized organelles. This consists of bacteria and cyanobacteria.

Eukaryotes are a cell or cells in which the genetic material of DNA is in the form of chromosomes. This includes all living things other than eubacteria and archaebacteria.

<u><em>Hope this helps!</em></u>

<u><em>Please mark brainliest! </em></u>

5 0
3 years ago
Can boron atoms, B form dative bonds with nitrogen atoms, N in the compound ammonia?​
expeople1 [14]

"The boron-nitrogen interaction in the studied molecules shows some similarities with the N→B bond in the H3N-BH3 molecule, formally understood as covalent-dative. ... The results show that all the studied BN bonds are triple, since three two-center orbitals have been obtained."

"Formation of a dative bond or coordinate bond between ammonia and boron trifluoride. When the nitrogen donates a pair of electrons to share with the boron, the boron gains an octet. ... In addition, a pair of non-bonding electrons becomes bonding; they are delocalized over two atoms and become lower in energy."

3 0
3 years ago
using the equation 2h2+o2--&gt;2h2o if 192g of oxygen are produced how many grmas of hydrogen must react with it
Brilliant_brown [7]
Equation: 2H₂ + O₂ → 2H₂O

Now, Given mass of Oxygen = 192 g
Molar mass of Oxygen = 16 g/mol

No. of moles in Oxygen = 16/192 = 0.0833

Now, for every mole of Oxygen, 2 mole of Hydrogen will form, 
so, Number of moles of Hydrogen = 0.0833 * 2 = 0.167

Given mass = Number of Moles * Molar mass
Given mass = 0.167 * 2
m = 0.33 g

In short, Your Answer would be: 0.33 g

Hope this helps!
7 0
4 years ago
Read 2 more answers
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