Answer:
Explanation:Reaction NaHCO3 + HCl ⇒ NaCl + H2O + CO2
Molar mass M = (22.99+1.008+ 12.01+3·16 ) g/mol. Calculate
Amount of substance n =m/M, n(NaCl) is equal.
M(NaCl) = 58.44 g/mol and mass m= n·M
Answer:
Volume and density are inversely related
Answer: Ions may be defined as the element that contains either positive or negative charge over them. Two types of ions are cations and anions. The outermost electrons are involved in the formation of ions.
The atomic number of sulfur is 16. Its outermost electronic configuration is K=2, L= 8, M= 6. The sulfur requres two more electrons to complete its orbit and accquire -2 charge.
Explanation:
Answer:
84.0 ppm is the concentration of Red 40 dy in the original sports drink.
Explanation:
Concentration of red dye in sport drink before dilution 
Volume of the sport drink before dilution 
Concentration of red dye in sport drink after dilution 
Volume of the sport drink after dilution 
( dilution )
84.0 ppm is the concentration of Red 40 dy in the original sports drink.
molecular weight of toluene = 92 g/mol
C6 = 12 x 6 = 72
H5 = 1 x 5 =5
CH3 = 12 + 1 x 3 =15
molecular weight of benzene = 78 g/mol
C6 = 12 x 6 = 72
H6 = 1 x 6 = 6
moles toluene:
115.8 / (92 g/mol) = 1.25 mol
moles benzene:
45.2/ (78 g/mol) = 0.57mol
total moles: 1.25 + 0.57= 1.82 moles
mole fraction of toluene:
1.25 mol / 1.82 moles = 0.68
