Determine the numbers of atoms in each of the following 5.40 g b 0.250 mol k 0.0384 mol k 0.02550 g pt 1.00 x 10^-10 g au,

a) 5.40 g B : atoms

b) 0.250 mol K : atoms

c) 0.0384 mol K : atoms

d) 0.02550 g Pt: atoms

e)   Au: atoms

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number of particles.

To calculate the moles, we use the equation:

a) 5.40 g B

1 mole of boron contains = atoms

Thus 0.5 moles  of boron contain = atoms

b) 0.250 mol K

1 mole of potassium (K) contains = atoms

Thus 0.250 moles of potassium contain = atoms

c) 0.0384 mol K

1 mole of potassium (K) contains = atoms

Thus 0.0384 moles of potassium (K) contain = atoms

d) 0.02550 g Pt

1 mole of platinum contains = atoms

Thus of platinum contain= atoms

e) Au,

1 mole of gold contains = atoms

Thus of platinum contain= atoms

answer: option (4) is the correct answer.

explanation:

areas which are at low altitudes and near the equator tend to receive direct sunlight from the sun. hence, heat energy or radiations from the sun make these areas warmer and they have warmest water.

whereas areas which are at high altitudes and away from the equator do no receive direct sunlight. hence, no direct contact from the sun makes these regions colder and thus, they have colder water.

thus, we can conclude that the statement areas at low latitudes near the equator have the warmest water because they receive the most direct sunlight best explains the relationship between an area's geography and the temperature of its surface water.