Answer:
a) 171
Explanation:
We can find the mass (in grams) of a sample by multiplying the amount of moles by the molar mass.
In this case, we know we have 0.500-mol and would multiply it by the molar mass, 342.3g/mol, to give us the answer of 171.15g rounded down to 171g.
Equation: 0.500mol x 342.3g/mol = 171.15g
Answer: The magnetic field<span> of a bar </span>magnet<span> is </span>strongest<span> at either pole of the </span>magnet<span>. It is equally strong at the north pole compared with the south pole. The force is weaker in the middle of the </span>magnet <span>and halfway between the pole and the center.
hope this helps</span>
Answer: Relative velocity of the boat with respect to shore is 20 km/h.
Explanation;
Relative velocity of the river with respect to shore,V = 10 km/h
Velocity of the shore = 0 km/h
Relative velocity of the river with respect to shore:
Velocity of the river
= 10 km/h
Velocity of the boat = 
= ?
Relative velocity of the boat with respect to river ,V'= 10 km/h
Velocity of the boat = 20 km/h
Relative velocity of the boat with respect to shore, V":
Relative velocity of the boat with respect to shore is 20 km/h.
diffract through an open doorway in order to propagate into the hallway.
