concentration of O₂ dissolved in H₂O can be written as ppm
ppm stands for parts per million - mg/kg
the amount of mg in 1 kg of solution
the mass of O₂ - 0.008 g
1000 mg equivalent to 1 g
therefore mass of O₂ in mg - 0.008 g x 1000 mg/g = 8 mg
the mass of water is 1000 g
1000 g is equivalent to 1 kg
mass of water in kg - 1000 g / 1000 g/kg = 1 kg
there's 8 mg of O₂ in 1 kg of water
therefore concentration of O₂ is - 8 mg/kg
also can be written as 8 ppm
answer is 8 ppm
Answer: The law of proportion states that elements combine in whole number ratios. The gram readings for K are multiples of each other, both in grams and moles.
Let us compare the ratios:
2.44 grams/1.22 grams = 2
4.89 grams/2.44 grams = 2
Therefore, Potassium always combines with Oxygen in a ratio of 2 is to 1.
Answer: 274.6 L
Explanation:
Given : length = 89 cm, width = 47.2 cm and height = 65.38 cm
Volume of rectangular aquarium =
Volume of aquarium =
Thus the tank can hold 274.6 L of water to fill this aquarium.
Answer:
Salinization is the increase of salt concentration in soil and is, in most cases, caused by dissolved salts in the water supply. This supply of water can be caused by flooding of the land by seawater, seepage of seawater or brackish groundwater through the soil from below.
Explanation:
