I think the correct answer would be HCl + NaHCO3 -> NaCl + H2O + CO2, 2HCl + CaCO3 -> CaCl2 + CO2 + H2O, 2HCl + Mg(OH)2 -> MgCl2 + 2H2O. Hydrochloic acid would react with the basic substances in the stomach which are magnesium hydroxide, sodium bicarbonate and <span>calcium carbonate.</span>
Answer:
Isotope, one of two or more species of atoms of a chemical element with the same atomic number and position in the periodic table and nearly identical chemical behaviour but with different atomic masses and physical properties.
By international agreement, absolute zero is defined as precisely; 0 K on the Kelvin scale, which is a thermodynamic (absolute) temperature scale; and –273.15 degrees Celsius on the Celsius scale.
Answer:
176.36g/mol
Explanation:
It was given that:
Mass of ascorbic acid=0.552 g
Volume of water=20.0 mL
Concentration of KOH=0.1103 M
Volume of KOH=28.42 mL. = 0.02842l
pH of solution at 10.0 mL= 3.72
At equivalence point, number of moles of acid is equal to the number of moles of base.
Number of moles of base= (KOH) x Volume
=0.1103 x 0.02842 L
=0.00313 moles.
Therefore number of miles of acid= 0.00313moles
No of moles= Mass/molar mass
Molar Mass= Mass of Acid/ No of moles of acid
= 0.552g/0.00312moles
= 176.36g/mol
