Everyone has the HD gene, but in some families an abnormal copy of the gene gets passed from parent to child. If you have a parent with Huntington's disease, you have a 50% chance of having the gene and developing the disease. Also: Men and women are equally likely to inherit the abnormal gene.
Hydrogen gas is produced: Zn + 2HCl â ZnCl2 + H2â + Î´Q   Zinc (Zn) reacts with Hydrochloric Acid (HCl) to produce Zinc Chloride (ZnCl2), Hydrogen Gas (H2), and He â¦ at. 6 people found this useful.
f of HCl(aq) = â167.2 kJ/mol DH f of ZnCl 2(aq) = â488.2 kJ/mol Zn(s) + 2HCl(aq) â ZnCl 2(aq) + H 2(g) b. What mass of zinc must be used for 123 kJ of heat energy to be given off? What Is Required? a. You need to determine the enthalpy of reaction per mole of Zn(s). b. You need to calculate the mass of zinc that will produce a given amount of heat.