Answer:
i.
A kid falling out of a tree - Gravitational Potential energy to Kinetic energy
ii.
A scout rubbing sticks together to start a fire - Kinetic energy to Heat energy
iii.
A man running a kerosene heater - Chemical Potential energy to Heat energy
Answer:
the volume of 5.0 g CO2 is 2.6L
CO2 at tsp
The maximum mass of B₄C that can be formed from 2.00 moles of boron (III) oxide is 55.25 grams.
<h3>What is the stoichiometry?</h3>
Stoichiometry of the reaction gives idea about the relative amount of moles of reactants and products present in the given chemical reaction.
Given chemical reaction is:
2B₂O₃ + 7C → B₄C + 6CO
From the stoichiometry of the reaction, it is clear that:
2 moles of B₂O₃ = produces 1 mole of B₄C
Now mass of B₄C will be calculated by using the below equation:
W = (n)(M), where
- n = moles = 1 mole
- M = molar mass = 55.25 g/mole
W = (1)(55.25) = 55.25 g
Hence required mass of B₄C is 55.25 grams.
To know more about stoichiometry, visit the below link:
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What! Your teacher is crazy - half of those things will catch on fire if they are mixed! You should double check to make sure you have them written down right or you could really get hurt!
If you mix HNO3 and HCl you will get a brown gas (don't light it or smell it!). The one that is heavier is the HNO3, because it has more atoms in it. Then, mix the silver one (AgNO3) with KOH - it will give a silver coating to the plastic (search for Tollins Test to see what it looks like). DI water will absorb CO2 from the air and make carbonic acid, so the one that is acidic will be the water.
<span>Good luck!
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Answer:
In each case calculate the volume of the number of moles of gas stated. (Assume that all volumes are measured at room temperature and pressure and that 1
Explanation: