If 250 mL of a 0.50 M NaCl solution is diluted to 840 mL, what is the molarity of the resulting solution?

a) 0.15 M

b) 6.7 M

c) 0.60 M

d) 1.7 M

e) 0.0025 M

1. What is the answer to the following expression in the correct number of significant figures? (0.1245) x (0.00003) x (298,000) / (2.0 - 1.5)

n an atom, the first energy level can hold electrons. The second energy level can hold electrons. The third energy level can hold electrons.

Elements beyond number ___on the periodic table are radioactive

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Which of the following will increase the strength of a copper electromagnet A. Adding more loops to the wire B. Using DC current (like from a battery) instead of AC current (like from the wall) C. Increasing the current D.

Which statement best explains how the models differ? Model A shows the formation of ions, and model B does not show the formation of ions. Model A does not show the formation of ions, and model B shows the sharing of electrons.

What is the enthalpy of combustion (per mole) of C3 H8 (g) ?

Describe how speed, velocity and acceleration are related?

What is 3 ethyl 3, 4 dimethylheptane abbreviated structural formula?

What kind of energy can be transferred