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2 years ago

10

A student observes two cells. The student must classify the cells as either fungus or bacteria.What evidence can the student use

to classify the cells?

1 answer:

Kamila [148]2 years ago

6 0

Answer:

The bacteria cell has cytoplasm.

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Why are gas bubbles not always a sign of a chemical change?

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2 years ago

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3 years ago

when the orbitals or energy levels of an atom are full, it is considered to be stable. which atom in the ground state has a stab

Sonbull [250]

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2 years ago

A sample of nitrogen gas is collected over water at temperature of 20.0˚C. What is the pressure of the nitrogen gas if atmospher

Levart [38]

Answer:

$P_N=0.987atm$

Explanation:

Hello there!

In this case, for these problems about collecting a gas over water, we must keep in mind that once the gas has been collected, the total pressure of the system is given by the atmospheric pressure, in this case 1.01 atm. Next, since we also have water in the mixture, we can write the following equation:

$P_T=P_w+P_N$

Thus, by solving for the pressure of nitrogen and using consistent units, we obtain:

$1.01atm=17.5torr*\frac{1atm}{760torr} +P_N\\\\P_N=1.01atm-0.023atm\\\\P_N=0.987atm$

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3 years ago