What is the order of the reaction if A decomposes to B and C with a rate constant of 8.43 × 10⁻⁴ s⁻¹ at a certain temperature? A)zero
B)second
C) third
D)first

if you mean hydrogen and oxygen then water is the product

i think slash and

your answer is a. the enthalpy of formation for a pure element in its standard state is always positive.

the density of gold = 19.3 g/cm3

the relation between density and mass and volume is

density = mass / volume

given :

mass of gold = 13 g

density = 13g / volume = 19.3

volume = 13 /19.3 = 0.67 cm^3

thus volume of gold nugget = 0.67 cm^3