Activity 3: My Uniqueness Directions: Describe the object by giving the meaning of each letter of the word. The first
letter of each word is done for you. Copy and answer on your activity notebook.
hs
M-agnificlent
Amazing
C-aptivating
10
S
T
T
- m 3 O
E
E
O
R
R
1
D​

answer : third trial had the contaminated sample and the correct value for dhrxn should be 1000 kj/mol

explanation :

let us write down the given equations

equation 1 :

equation 2 :

equation 3 :

let us use hess's law to find out which 2 equations can be added to get the third equation.

let us reverse equation 2 and multiply it by 2. the new equation that we get is,

equation 4 :

let us add equation 1 & 4

the above equation is similar to equation 3 but has different value for dhrxn.

therefore third trial had the contaminated sample and the correct value for dhrxn should be 1000 kj/mol

i believe the answer is 5,000

answer: atomic mass was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version.

explanation:

originally atomic mass was used to arrange elements on the periodic table from left to right in a row. each column then shows similar properties of elements of a group.

in modern periodic table, the atoms are arranged in increasing atomic number. as atomic number represents the number of protons in an atom which is unique for every atom.  

gasoline is a mixture. it contains several different kinds of compounds that can be present in a variety of ratios.