arielrobin arielrobin

13-02-2019
Chemistry

contestada

The lead in lead pencils is pure carbon, C. The mass of a period mark is 0.00010 g. How many C atoms (C’s) make the period Mark?

HELP ASAP PLEASE!

Respuesta :

CalCDanG CalCDanG

13-02-2019

The mass of one atom of Carbon is 2.0×10^−26 kg.

The mass of the period mark(kg)= 1.0x10^-7 kg.

# of carbon atoms=1x10^-7/2x10^-26

# of carbon atoms= 5x10^-34

Answer Link

Otras preguntas

The ideals contained in this document are most closely associated with the ideals developed by

The molar specific heat of a gas is measured at constant volume and found to be 5R/2. The gas could likely be which of the following? (Select all that apply.)

5. What does the protagonist decide and what action does the protagonist take because of this decision? Wonder

A parallel plate capacitor has circular plates of radius 2 cm separated by 1.4mm. The displacement current in the long straight wire for charging the plates is

Complete the sentences with the correct terms. In ,signals pass through a cell junction from one cell to adjacent cells. Membrane-bound signals bind to recept

I need help asap im having a test on it

Wonwoo has 3 cupcakes. Grace gives 2 cupcakes to Wonwoo and Wonwoo gives 1 cupcake to Grace. Later, Grace's friend Lois and Seeun each gives 4 cupcakes to Wonwo

A[n] _____ is any description of the good's physical nature or its use, either in general or specific circumstances, that becomes part of the contract.Acknowled

John has a fish tank with base dimensions 72 cm by 48 cm and height 52 cm. He fills it with water to two-thirds of the height. He places a cube into the tank an

An aging of a company's accounts receivable indicates that $8500 is estimated to be uncollectible. If Allowance for Doubtful Accounts has a $3510 balance, the a