Answer:
Empirical formula = C₃S₂
Explanation:
Given data:
Mass of carbon = 44.0 mg (44/1000 = 0.044 g)
Mass of sulfur = 122 mg - 44.0 mg = 78 mg = 78/1000 = 0.078 g)
Empirical formula = ?
Solution:
First of all we will calculate the number of moles.
Number of moles of carbon = mass / molar mass
Number of moles of carbon = 0.044 g/ 12.01 g/mol
Number of moles of carbon = 0.0037 mol
Number of moles of sulfur:
Number of moles = mass / molar mass
Number of moles = 0.078 g/ 32,066 g/mol
Number of moles = 0.0024 mol
Now we will compare the moles:
C : S
0.0037/0.0024 : 0.0024/0.0024
1.5 : 1
C : S = 2(1.5 : 1)
C : S = 3 : 2
Empirical formula = C₃S₂
Answer:
B. salt dissolved in water
Explanation:
a mixture is multiple substances mixed together
Answer:
The protons and electrons are attracted to each other because they are oppositely charged particles.
Explanation:
Protons have a positive charge and electrons have a negative charge, opposites attract.
Answer: oxygen
Explanation: as you go across period on the periodic table, the elements get larger. Their atomic masses also increase meaning it gets heavier and thus larger.
