Answer:
Conduction
Explanation:
Conduction seems to be the mechanism whereby heat energy is transferred from adjacent molecules by interactions. In solids and liquids, where even the objects are near to each other, conduction happens more easily than in liquids, where even the molecules are farther separated.
Answer:
B-It provides an explanation for many observations and accepted hypotheses.
Answer:
Molarity = 0.24 mol/L
Explanation:
Given data:
Mass of NaNO3 = 25.4 g
Volume of solution = 1250 mL
Molarity = ?
Solution:
Molarity of solution is equal to the number of moles of solute divided by volume of solution in litter.
Formula:
Molarity = number of moles / volume in L
First of all we will convert the volume in litter.
1 L = 1000 mL
1250 / 1000 = 1.25 L
Now we calculate the moles of NaNO3 in present in 25.4 g.
Number of moles = mass / molar mass
Molar mass of NaNO3 = (23 + 14+ 16×3) = 85 g/mol
Number of moles = 25.4 g / 85 g/mol
Number of moles = 0.299 mol
Now we will calculate the molarity of solution
Molarity = number of moles / volume in L
Molarity = 0.299 mol / 1.25 L
Molarity = 0.24 mol/L
Atoms are the smallest bits of ordinary matter and are made from particles called protons, neutrons and electrons while a An element is a substance that is made entirely from one type of atom