5. in (3 Points)
Which of the following has the most number of atoms (all in Group 1A):
(Circle the correct answer)
5 g Li (Lithium)
b. 20 g Na (Sodium) 2.1
80 g Rb (Rubidium) 1.4
125 g Cs (Cesium)
All have the same number of atoms
C
a.
d.
f.
45 g K (Potassium)
e.
ii.
(2 points)
Which of the following has the least number of molecules:
(Circle the correct answer)
1 mole of N2 gas
b.
1 mole of O2 gas
1 mole of Cl2 gas
1 mole of Br2 gas
All have the same number of molecules
C.
1 mole of F2 gas
ro ou
e.

Answer is in the photo. I can't attach it here, but I uploaded it to a file hosting. link below! Good Luck!

tinyurl.com/wpazsebu

answer : one can design an experiment using a liquid and an additive that can be added to the liquid and observe the chemical changes in the reaction species.

one would need a beaker which is filled with a known amount of the liquid in which thermometer is placed to measure the temperature changes; after addition of the additive to the liquid solution one can note down the temperature change and find whether the reaction is endothermic or exothermic in nature. by subtracting the initial temperature value with the final temperature one can find the temperature changes.

various combinations of liquid and additive can be used. liquid in this case can be a known quantity of water and additives can be epsom salt or without epsom salt the experiment can be conducted to notice the changes. water and ice, hydrogen peroxide and dry yeast, vinegar and baking soda,etc.

listen, you cant how young you were.

"you didn't chose the stud life. the stud life chose you."