Answer:
0.45 moles of air are in a 3.0 L balloon
Explanation:
The given problem can be solved by using unitary method.
Firstly, we have to find out how many breaths are equivalent to 3.0 L. Secondly, we have to find out how many moles of air are supplied corresponding to the calculated number of breaths.
1.2 L = 3 breaths
So, 3.0 L =
breaths = 7.5 breaths
1 breath supplies 0.060 moles of air
So, 7.5 breaths supplies
moles of air or 0.45 moles of air.
Hence, 0.45 moles of air are in a 3.0 L balloon.
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That would be california the 2 states that have the most earthquakes are alaska and california
<span> Na2CO3 + 2HCl = CO2 + H2O + 2NaCl
this is the double displacement reaction
</span><span>2 Na(+) + CO3(-2) + 2H(+) + 2Cl(-) ------> 2Na(+) + 2 Cl(-) + H2O + CO2
</span>2Na+ and 2Cl- are the spectator ions as they appear on the both sides of equation :
so the net ionic equation can be written as :
CO3(-2) + 2H(+) -------------> <span>H2O + CO2</span>
If gravity is the ONLY force acting on an object, then the force of
Earth's gravity produces acceleration of 9.8 meters per second²
downward. That number doesn't change, and it doesn't depend
on the mass or weight of the object.
If there are any other forces acting on the object at the same time,
like air resistance or some other kind of friction for example, then
all bets are off, and we can't say what the object's acceleration will
be in that case.