A group of students added an excess of finely divided zinc metal to aqueous sulphuric acid. When no more gas was evolved, they filtered the mixture and used the filtrate to obtain dry crystals of hydrated zinc sulphate. (a) Write a balanced chemical equation for the reaction between zinc and
aqueous sulphuric acid. Include state symbols.

while cooking a piece of 1/2 pound beef steak, a cast iron pan (2.4kg in weight) was heated 260 celsius.

percent abundance for cu-63 can be shown as:

63 x + 65 (1-x) = 62.9296

65 - 62.9296 = 2 x

x = 1.035

thus, percent abundance for cu-63 is 1.035

percent abundance for cu-65 can be shown as:

63 x + 65 (1-x) = 64.9278

65 - 64.9278 = 2 x

x = 0.0361

thus, percent abundance for cu-63 is 0.0361

the mass spectrum of cu-63 showing the intense peak as, this isotope is found in nature more abundantly around 92.38 % in comparison to cu-65 which is found 62.58 % naturally

answercontent filtering;