Answer:
Three
Explanation:
Ca= 1 atom
And Br2 stands for 2 Br atoms
Um definitely under .00001
Answer:
Intramolecular forces are the forces that hold atoms together within a molecule. Intermolecular forces are forces that exist between molecules. Therefore, you find them between atoms and molecules.
Explanation:
Hope this helps!!
5 star and brainliest?
Answer:
The mass of CO in 12,000 Liters of air is 
.
Explanation:
The ppm is the amount of solute (in milligrams) present in one Liter of a solvent. It is also known as parts-per million.
To calculate the ppm of oxygen in sea water, we use the equation:
The ppm concentration of CO = 10 ppm
Mass of CO = m
Volume of air = 12,000 L
The mass of CO in 12,000 Liters of air is .
Answer:
A precipitate forms; the colour changes.
Step-by-step explanation:
The formation of a precipitate a colour change are always signs that a chemical reaction has occurred.
A, B, C, and D are <em>wrong.</em> They are signs of a reaction, but you did not observe them here.
