aspisak3364 aspisak3364

26-09-2017
Chemistry

contestada

How many gold atoms are in an 0.333 ounce, 18 k gold bracelet? (18 k gold is 75% gold by mass.)?

Respuesta :

09-10-2017

0.333 ounce * 0.75 * 28.35 grams/ounce = 7.080 grams gold 7.080 grams Au / 196.967g/mol Au = 0.0359 mol Au 0.0359 mol Au * (6.023 * 10^23) atoms/mol = 2.24 * 10^22 Atoms Au

Answer Link

Otras preguntas

Question 2 A 120-V/24-V control transformer has a VA rating of 20. The maximum amperage the transformer will put out is 0.8 amps. True False

Adam smith believed that _____________ would lead to the production of items that consumers want.

Which trait would be most beneficial to a plant living in the ocean's photic zone? A. Thick leaves that store water B. An extensive root system C. Wind-pollinat

An athlete runs 1 500 m in 3 min. 42 s. How many seconds is this less than 4 min

Describe the trading of enslaved people that had existed in africa before the arrival of europeans. explain what caused the slave trade to expand.

The measures of the angles of a quadrilateral are (x+2)°, (x+2)°, (x – 13)° , and x + 29°; x = ____. 85° 40° 340° 90°

Describe the hearing process

pick a character from lord of the flies. what is your character like? How does your character behave at the beginning of the book,middle and end? What plot line

What challenges including discrimination did immigrants face?

How were the economic impacts of the Great Depression similar in the United States and in Germany?

ACCESS MORE EDU ACCESS Universidad de Mexico