Chemistry Questions

已完成 已发布的 Oct 29, 2014 货到付款
已完成 货到付款

First question:

How we can find Avogadro number if we know

density of Aluminum 2.7 g/mL

One mole of Al 26.98 g

radius of Al atom 143 picometers.. (1x10^-12)

Spherical density 74% (theoretical)

Cubic density 54 % (theoretical)

Second question: We need to find with of aluminum foil in atoms (how many atoms we can stack on each other to equal the with of aluminum foil

Given aluminum foil 744,5 cm^2

mass of foil 2.60 g

One mole of Al 26.98 g

density 2.7 g/mL

radius of 1 atom of Al 143 пикометров.. (1x10^-12)

Spherical density of Al 74% (theoretical)

Cubic density of Al 54 % (theoretical)

生物技术 化学工程 数学 物理

项目ID: #6659828

关于项目

6个方案 远程项目 活跃的Oct 29, 2014

授予:

jasqwerty

It's quick math, I can knock them out for you. You pay, you get the math showing how to arrive at the answers. Thanks

$20 USD 在1天内
(8条评论)
3.9

有6名威客正在参与此工作的竞标,均价$26/小时

itachi23

A proposal has not yet been provided

$30USD 在1天里
(13条评论)
4.6
surajvmohan

Hey, I can find the avogadro number for the first question and the number of aluminium atoms in the second question. this is a simple question. Please reply so that i can explain it to you.

$25USD 在1天里
(8条评论)
3.9
shoaibchem

Hi dear contact me for 100% correct work. I am a chemist I will solve this question for you in best way. regards

$25USD 在1天里
(5条评论)
3.2
Fullgrade

We have Expertise in: Complete Course Work Solution for Students of US & Australian Universities Only MYOB Accounting Software's, Quickbooks Technical Reports, Lab Reports, Essay Writing, IEEE Reports, Resear 更多

$30USD 在1天里
(5条评论)
2.8
chemrock

I am subject Expert in Chemistry. I enjoy helping and Guiding students and Professionals with their projects, reports, assignments, home work, quizzes, online courses, exams and related tasks at fairly reasonable price 更多

$23USD 在1天里
(3条评论)
1.9
emmanuelkibor

hello pal I believe i can handle this questions. if you assign it to me i will post the answers in the next 3 hrs

$25USD 在1天里
(0条评论)
0.0