HanahJai HanahJai

22-10-2016
Chemistry

contestada

What is the number of atoms in a 2.35g piece of Gold (Au) ?

Respuesta :

Willchemistry Willchemistry

23-10-2016

Atomic mass gold ( Au) = 196.96 a.m.u

196.96 g ------------ 6.02x10²³ atoms
2.35 g -------------- ??

2.35 x (6.02x10²³) / 196.96

=> 7.18x10²¹ atoms

Answer Link

Otras preguntas

The major mountains of the world are associated with what plate boundaries?

A rubber ball is dropped onto a hard surface from a height of 8 feet, and it bounces up and down. At each bounce it rises to 90% of the height from which it fe

What is the slope of the line whose equation is 2x-6y=0?

Write the expression in factored form. 3m-6n 12x-18y 6x-18

A rubber ball is dropped onto a hard surface from a height of 8 feet, and it bounces up and down. At each bounce it rises to 90% of the height from which it fe

In a laboratory demo, a 12 V car battery powers two 12 V, 24 W lamps in parallel.The current is measured using an ammeter (of resistance 10 ohms) which is conne

An above-ground swimming pool is leaking. After 1/2 hour the pool has leaked 7/8 of a gallon of water. How many gallons of water per hour is the swimming pool l

14=-(p-8)....what is the value of p

What large body of water (a bay) borders Delaware on the north east

there are 7 gray kittens. 2 kittens are black. how many fewer black kittens are there than gray kittens?