Calcium bicarbonate - Ca(HCO3)2
sodium peroxide - Na202
water - H20
silver nitrate - AgN03
potassium carbonate - K2CO3
sodium carbonate - Na2CO3
zinc chloride - ZnC12
calcium hydroxide - Ca(OH)2
magnesium chloride - MgC12
M₁ x V₁ = M₂ x V₂
2.5 x V₁ = 0.50 x 100.0
2.5 x V₁= 50
V₁ = 50 / 2.5
V₁= 20 mL
hope this helps!
To determine the molar mass of the unknown gas, we use Graham's Law of Effusion where it relates the effusion rates of two gases with their molar masses. It is expressed as r1/r2 = √M2/M1. We calculate as follows:
Let 1 = argon gas
2 = unknown gas
r2 = 0.91r1
r1/r2 = 1/0.91
1/0.91 = √M2/M1 = √M2/40
M2 = 48.30 g/mol
extinction
Explanation:
Excessive fishing and encroachment may lead to extinction. Fishes cannot be replaced at the rate by which they are consumed.
- These resources should be used in a sustainable way.
- When excessive fishing is done in a body of water, this can lead to depletion in amount of fish.
- This can lead to extinction of some rare species of fishes.
- This can also cause a problem of habitat encroachment and destroy where the fishes can dwell.
Learn more:
Marine ecosystem threat brainly.com/question/7957940
#learnwithBrainly
Solution: Change in state of matter is a physical change because of the physical condition and appearance changes but not the chemical composition.
