Which fourth period representative element has the highest atomic number?
A) Ca
B) Kr
C) Pb
D) Zn
E) none of the above
Question 2
How many milliliters of 0.260 M Na2S are needed to react with 40.00 mL of 0.315 M AgNO3? Na2S(aq) + 2 AgNO3(aq) 2 NaNO3(aq) + Ag2S(s)
A) 24.2 mL
B) 48.5 mL
C) 66.0 mL
D) 96.9 mL
Question 3
If the pressure in a gas container that is connected to an open-end U-tube manometer is 116 kPa and the pressure of the atmosphere at the open end of the tube is 752 mm Hg, the level of mercury in the tube will
A) be 118 mm higher in the arm open to the atmosphere.
B) be 118 mm higher in the arm connected to the gas cylinder.
C) be 870 mm higher in the arm open to the atmosphere.
D) be 870 mm higher in the arm connected to the gas cylinder.
The frequency of competition according to the number of species involved.
Atom of the Element Lithium
End of last glacial period
How Long Do You Ovulate After Your Period?
Fourth Leopold’s maneuver
Number 12