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ODU / Engineering / CHEM 106 / How many different types of atoms are present?

How many different types of atoms are present?

How many different types of atoms are present?

Description

School: Old Dominion University
Department: Engineering
Course: Introduction to Chemistry Lab
Professor: Janet moloney
Term: Fall 2016
Tags: Chemistry and Chem Lab
Cost: 50
Name: PreLab 6: Chemical Reactions Part 1
Description: Prelab 6 for chemistry lab
Uploaded: 08/08/2016
2 Pages 44 Views 1 Unlocks
Reviews


Reminder: You need to have 5-10 large dead leaves for next week's lab. Get them now.


How many different types of atoms are present?



Now, in the large circle below, sketch using different colors the microscopic picture of a CaCl aqueous solution as it actually exists when dissolved in water. Refer to figure 1 on page 1 of the reading material Make sure that the ratio of the ions is correct.


How many different types of molecules are present?



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Don't forget about the age old question of What are the different anorexia subtypes?

Water molecules in background (not drawn)

Ca 2

Make sure you fill the entire

circle.

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28l Ratio We also discuss several other topics like What is the difference between fissure and sulci?
We also discuss several other topics like How do bugs become resistant to drugs?

Study SOT

4. Consider the following chemical reaction again:

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NaHCO3 (ag) + HCl(aq)

+ NaCl(aq) + H2O


How many oxygen atoms are present after the reaction ends



If you want to learn more check out What is the difference between low tech and high tech?

+ CO2(E)

udy Soup

a. How many different types of atoms are present? b. How many different molecules are present? C. How many different states of matter are present? d. How many oxygen atoms are present before the reaction begins? e. How many oxygen atoms are present after the reaction ends?__ 3 f. If sodium bicarbonate (NaHCO3) was alone present dissolved in water, from your practical

knowledge that you gained after performing, the separation of salt, sand and salicylic acid experiment, how would you obtain pure dry sodium bicarbonate?

use distillation to heat the mixtine to Vaporize the one with the lower !

point.

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Reminder: You need to have 5-10 large dead leaves for next week's lab. Get them now. Prelab 6: Chemical Reactions Part 1 Name:

Date:

Instructor:

Section:

Partner:

1. There are many important symbols used in chemical equations. Complete all blanks in the table below.

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Symbol

Meaning

(5)

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(9)

(aq)

solid

Liquid

gas

aqueous

Add heat

Yields

2. Consider the following chemical reaction:

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NaHCO3 (aq) + HCl(aq)

+ NaCl(aq) + H2O (1) + CO2 (s)

Study

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a. Circle the reactant(s). b. Underline the product(s). C. What does the term aqueous (aq) mean?

a Solution or mixture in which water is the

Solvent. d. What observation would you likely see as this reaction progressed? there would be

tion

e. How does the term aqueous (aq) differ from the term liquid (1)?

An aqueous solution is one where water is the solvent in your Solution where

describes the phase of matter. 3. CaCl2 is a water-soluble ionic compound. Here you are bring asked to sketch using different colors the

microscopic picture of CaCl2 as it actually exists when dissolved in water. Firstly, NaN is done for you here as an example.

@studySoup

tudy Sour

N

Water molecules in background (not drawn) Notice that there are 3x sodiums as nitrogens

Na

in solution

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