The code below is supposed to handle a bad port string gracefully. Why does it still crash when the user types abc? try: port = int(input(“port? “)) except ZeroDivisionError: print(“not a number”)

What value does int(“20”) + 5 evaluate to?

Which file mode opens a file for writing and truncates any existing content?

Give the name of the molecular compound and the name of the aqueous solution for the binary compound HF:

What is the identity of the alkaline earth element in the 6th Period?

Carry out the following calculation and report your answer to the correct number of significant figures:2.795 m × 3.10 m         6.48 m

What is the name of the compound with the formula Cr2S3?

What is the best answer to the following expression?(59.36 cm + 0.307 cm + 1.6097 cm – 53.8 cm)

How many protons and electrons does the most stable ion for calcium have?# protons         # electrons

A) B) C)D) E) Which of the figures above depicts a heterogeneous mixture?