Answer:
Explanation:
When you are in the laboratory and take a direct sniff of the chemicals you are using, you run the risk of damaging your mucous membranes or your lungs. When it is necessary to smell chemicals in the lab, the proper technique is to cup your hand above the container and waft the air toward your face.
How about P-La-S-Ti-C W-Ra-P?
Cars rust because when metal comes into contact with water or some sort of water form, it will make the surface wet. If the metal is wet for too long, it will start to soak up the water, therefore making it rusty. The salt will also rust a car. It does this because the mix of carbon dioxide and oxygen in the salt will eat away at the car, making it rust faster. Hope this helps!
Well, the sun heats up colder areas, the temperature difference causes wind. (sorry if wrong)
Data:
M = 1.50 (assiming the data is Molarity and not molality, which is written with capital letter)
V= 10.5 l
n = ?
Formulas:
M = n / V => n = M * V
n = mass in grams / molar mass => mass in grams = n * molar mass
Solution
n = 1.50 * 10. 5 l = 15.75 moles
molar mass CaCO3 = 40.08 g/mol + 12.01 g/mol + 3* 16 g/mol = 100.09 g/mol
mass in grams = 15.75 moles * 100.09 g/mol = 1,576.4 g.
Answer: 1,576 g
