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Nonamiya [84]
3 years ago
12

What about energy can change and what does not change, according to the law?

Chemistry
1 answer:
anzhelika [568]3 years ago
7 0
<span>Conservation of energy implies that energy can be neither created nor destroyed, although it can be changed from one form into another.</span>
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What pressure will be produced when 2.0 moles of N2 gas is heated to 68oC in a container that holds 1.25 of gas?
Stella [2.4K]

The pressure of the nitrogen gas produced is determined as 44.77 atm.

<h3>What is the pressure of the Nitrogen gas?</h3>

The pressure of the nitrogen gas is determined from ideal gas equation, as shown below;

PV = nRT

P = nRT/V

where;

  • n is number of moles = 2 moles
  • R is ideal gas constant = 0.08205 L.atm/mol.K
  • T is temperature = 68⁰C = 68 + 273 = 341 K
  • V is volume = 1.25 L

P = (2 x 0.08205 x 341)/(1.25)

P = 44.77 atm.

Learn more about pressure here: brainly.com/question/25736513

#SPJ1

3 0
3 years ago
How many valence electrons in Al3+?
anastassius [24]
Aluminum has an atomic number of 13. The electronic configuration of Al is 1s2 2s2 2p6 3s2 3p1. Al3+ has only 10 electrons so the configuration of Al 3+ is 1s2<span> 2s</span>2<span> 2p</span><span>6. The highest energy level is 2 so the number of electrons in the highest level is the valence electrons which is 8.</span>
7 0
4 years ago
Read 2 more answers
1. How many moles of carbon are in 2.25 * 10^22 atoms of carbon ?
tresset_1 [31]

Answer:

atoms of C? 2.25 x 1022 atoms C x 1 mole C = 0.037 mol C

Explanation:

 How many moles of C are in 2.25 x 1022 atoms of C?

3 0
3 years ago
Which term below represents a pure substance that can be separated chemically but cannot be separated physically that is made up
Nastasia [14]

C.molecules- made up of more than one atom and can only be broken by chemical means

8 0
3 years ago
What substances devolve in water
stiv31 [10]

Answer:

Two types of substances will dissolve in water: ionic compounds, such as sodium chloride (NaCl, or table salt) and compounds composed of larger molecules that have a net charge due to the arrangement of their atoms. Ammonia (NH3) is an example of the second type.

Explanation:

4 0
3 years ago
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