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garik1379 [7]
3 years ago
9

What is the Law of Conservation of energy?

Chemistry
1 answer:
ladessa [460]3 years ago
3 0

Answer:

<u>~</u><u>Law of Conservation of </u><u>energy~</u>

The law of conservation of energy states that energy can neither be created nor destroyed, only energy can be converted from one form to another.

You might be interested in
At 506 K and 2.05 atm, if 6.00 grams of H2 will reacts with excess N2 what volume in liters will be produced of NH3? (R = 0.0820
Nady [450]

Answer:

  • 90.4 liter

Explanation:

You must convert the 6.00 grams of H₂ into number of moles, and then use the stoichiometry of the reaction to find the number of moles of NH₃, which can be converted into volume using the ideal gas equation.

<u></u>

<u>1. Number of moles of H</u><u>₂</u>

  • number of moles = mass in grams / molar mass
  • molar mass of H₂ = 2.016g/mol
  • number of moles = 6.00grams / 2.016g/mol = 2.97619mol

<u></u>

<u>2. Number of moles of NH</u><u>₃</u>

<u></u>

i) Chemical equation:

  • 3H₂(g) + N₂(g) →  2NH₃(g)

ii) Mole ratio:

  • 3 mol H₂ : 2 mol NH₃

iii) Proportion:

  • x mol  NH₃ / 2.97619mol H₂ = 3 mol NH₃ / 2 mol H₂

  • x = 4.4642857mol NH₃

<u>3. Volume of NH₃</u>

  • pV = nRT
  • V = nRT/p
  • V = 4.4642857mol × 0.08206 atm·liter/(K·mol) × 506K / 2.05atm
  • V = 90.4 liter
8 0
3 years ago
Distinguish between boiling, melting, and sublimation
Rashid [163]

Answer:

Boiling: The process of conversion from liquid to gas on heating is called boiling.

Example: Water on heating turns into water vapour.

Melting: The process of conversion from solid to liquid at room temperature is called melting.

Example: Ice cream melting at room temperature.

Sublimation: The Conversion of solid to gas directly is called sublimation.

Example: Camphor, Dry ice

Explanation:

Hope it helps you:))))

3 0
2 years ago
There is a part A and B
ladessa [460]

Answer:

Im so confused, and maybe blind bcs I cant read it

Explanation:

Could you explain??

3 0
3 years ago
Read 2 more answers
Help!!! I don’t know how to solve!!!
ladessa [460]
Just use q=mCDeltaT

q=energy
m=mass
c=specific heat
Delta T= Change in temperature
6 0
4 years ago
4) A 4.00 L balloon is filled with 0.297 moles of helium gas with a pressure
Nadya [2.5K]

Answer: 149

Explanation:

Using the ideal gas equation; PV = nRT

P= Pressure = 0.910 atm,     T= Temperature = ?

V= Volume = 4.0L                  R = Gas constant = 0.08206 L.atm/mol/K

n = number of moles = 0.297

Making 'T' the subject of the formular, we have;

T = P V/ n R   =  0.910  x 4  /  0.297 x 0.08206

                       =  149

6 0
3 years ago
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