Just took the test
It's B = original battery, thinner wire
Answer: 5.14 moles
Explanation:
heat supplied: 8280 J
The formula used for heat absorbed by an ideal gas:
where,
q = heat absorbed = 8280 J
= for monoatomic gas = 
n = number of moles
R = gas constant = 8.314 J/Kmol
= initial temperature = 206 K
= final temperature = 335 K
Now put all the given values in the above formula,
Thus there are 5.14 moles of gas in the container.
The element has 83 electrons
The mass of the N₂O in the given question is 92.4g.
<h3>What is the moles of N2O in the given conditions?</h3>
STEP1- Apply the ideal gas equation
PV=nRT
STEP2- Put the given values in the equation
P=130kPa, T=298K, V=40L R=8.31
STEP3- Solve the equation
N=PV/RT,
N=130×40/8.31×298
N=2.1moles
N=mass/molecular mass
mass=2.1×44
mass = 92.4g
Hence, the mass of N₂O is 92.4g.
learn more about ideal gas.
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Cells are too small to see with the naked eye.
It's pretty straight forward, use the cross-out method.
1) Microscopes MAGNIFY images, they don't color the cells. In fact, scientists have to use these chemicals to "stain" or color the cells to see them more easily through microscopes.
2) If the lenses of a microscope reduced the image of an organism to the size of a cell, you'd be seeing a very tiny human through your microscope, instead of actual cells.
3) Microscopes don't "trap" anything. In fact, scientists use plates or slides under microscopes to contain what they're studying.
