Answer:
1.77 g/L.
Explanation:
Molar mass of CO2 = 12 + (16*2)
= 44 g/mol.
Using ideal gas equation,
V/n = R*T/P
Where,
R = 0.082 L.atm/mol.K
T = 30°C
= 273 + 30
= 303 K
P = 1 atm
V/n = (0.082 * 303)/1
= 24.845 L/mol
Density = mass * volume
Density = molar volume/molar mass
= 44/24.845
= 1.77 g/L
Answer:
The balloon becomes inflated
Explanation:
The equation of the reaction between baking soda (sodium bicarbonate) and vinegar(ethanoic acid) is shown below;
NaHCO3 + HC2CH3O2 ------> NaC2H3O2 + H2O + CO2
The gas (CO2) evolved in the process leads to the inflation of the balloon dropped on the bottle in which the reaction is taking pace.
This observation provides evidence that a gas was really evolved in the reaction.
The mass number = protons + electrons
Atomic number= protons (and electrons)
You can determine the number of neutrons by subtracting the number of protons from the mass number
the semipermeable membrane surrounding the cytoplasm of a cell.