3 Question (11-9-12)

This week we finish the baby bottle lab and i  got to 6m. The way i did it is finding how much CO2 is in 3g of Baking soda. Then, i had to know how much vinegar in the amount of CO2 i got from 3g of baking soda. Because the vinegar is not pure vinegar i had to multiply the amount of vinegar times 10, because there is 10g of pure vinegar in every 100g of vinegar. I multiply the by 4 the amount of baking soda and vinegar to get amount to get 6m and pass it to get almost 12m
This week i really didnt learn anything new in science, but im getting better in finding a limiting factor and all that.
Next week or this 2 days until monday im going to study for the exam

3 questions (11-4-12)

This week we start practicing with the baby bottle lab, but we didnt start because the class ended. Monday we will start practicing.
Im still learning how to get the limiting reaction of a chemical reaction.
Next week i want to start reading my book because im just in the 9th page. I want to start and finish the baby bottle lab and to learn more stoichiometry.

3 Question (10-26-12)

This week I finish the Avogadro’s # lab and celebrate Mole Day by creating s big poster about Avogadro with a body of a mole
I just learned how to go from grams in a chemical reactions to molecules, like how many oxygen molecules in O2 +2H2--2H20
Next week i would like to learn more about Stoichiometry and learn the last section.

My Book

I haven't read my book, but the little i read is about the science about dunking doughnut and cookies. What is a cookie and a doughnut made of and what happens when you put in a coffee.

The Mole

A "Mole" is just a number, its the amount of a chemical substance. With the symbol "Mol" is like grams or amu, just use moles instead of grams or amu and it would be the same amount. The number of molecules in a mole is 6.022X10^23 ( Avogadro's number).
http://www.moleday.org/

3 Questions of the week

Today at class we did a lab called "Avogadro's number". Counting, getting the mass and volume of 100 rice grains, to get an idea of Avogadro's number
This week i just learned that a mole is just a number of a amount of a substance 6.022X10^23 ( Avogadro's number)
Next Im planning to learn more about Avogadro's number and celebrate National Mole Day (10-23-2012)
http://www.moleday.obrg/

Accurate, Precise and Significant Digits

Accuracy is how close a measured value is to the actual value.
Precision is how close the measured values are to each other.

Significant Digits rule: Atlantic Vs.Pacific
Atlantic- if decimal is Absent, count  all numbers from the right (Atlantic) with the first nonzero to the left
Pacific- if decimal is Present, count all numbers from the left (Pacific) side with the first nonzero to the right