Question

pre - lab questions
answer the following questions after you have read the entire experiment and reviewed gas laws in the textbook, but before you come to lab. show your work fully and clearly.

1. a sealed syringe contains gas at a pressure of 0.935 atm when the syringe volume is 12.0 ml.

a. qualitatively, what will happen to the pressure if the syringe volume decreases? why?
b. calculate the new pressure if the syringe plunger is moved to 30.0 ml.

1. if 93.5 cm of mg ribbon has mass 1.473 g, calculate the length of ribbon you must cut to get 0.0535 g of mg. (hint: this is just a proportion.)

Explanation:

Step1: Apply Boyle's Law

Boyle's Law states \(P_1V_1 = P_2V_2\) for a gas at constant temperature. Here, \(P_1=0.935\ atm\), \(V_1 = 12.0\ mL\), and \(V_2=30.0\ mL\).

Step2: Solve for \(P_2\)

Rearrange the formula to \(P_2=\frac{P_1V_1}{V_2}\). Substitute the values: \(P_2=\frac{0.935\ atm\times12.0\ mL}{30.0\ mL}\).
Calculate the numerator: \(0.935\times12.0 = 11.22\).
Then divide by \(30.0\): \(P_2=\frac{11.22}{30.0}=0.374\ atm\).

Answer:

The new pressure is \(0.374\ atm\).