3.9 grams CaCO3
The mass of 2.0 L of water with a density of 1.00 g/ml is 2000 grams.And 1 ppm of that is 2000 / 1000000 = 0.002 grams. So just multiply by the ppm of CaCO3, giving 0.002 g * 1.95x10^3 = 3.90 grams.
Since the least accurate datum we have is 2 significant figures, the result should be rounded to 2 significant figures, giving 3.9 grams.
Answer:
Vsln=13.2mL
Explanation:
MwPb(NO3)2=331.2g/mol
⇒ Vsln = (1L Pb(NO3)2/0.200molPb(NO3)2) * (molPb(NO3)2/331.2gPb(NO3)2) * 0.875gPb(NO3)2
⇒ Vsln = 0.0132L (13.2mL)
Hello, here’s the answer to your question. Converting ammonia to nitrate, which is absorbed by plants
<span>0.570 M (note the capital M, this is molarity. Using m denotes molality.
Molarity is represented by moles of solute over the liters of solution. In this problem we are given the mass of the solute and volume of solution. The calculations is follows:
(15.7 g CaCO3/275 mL of solution) x (1 mole CaCO3/ 100.0869 g of CaCO3) x (1000 mL of solution/ 1 L of solution) = 0.570 M CaCo3.</span>
The mass of wood before burning does not always equal the mass of the resulting ashes after burning because some other products have been produced and lost.
<h3>Burning of wood</h3>
When wood burns, a form of chemical change takes place and the reaction is reversible.
The products of wood burning include ashes, carbon dioxide, and water vapor. However, only ashes remain after burning because carbon dioxide and water vapor both escape into the atmosphere.
The escape of some of the products of burning into the atmosphere is one of the reasons the reaction seems to negate the law of conservation of mass.
According to the law of conservation of mass, masses are conserved during reactions but can be converted to different forms. Thus, if ashes were to be the only product of the burning of wood, then the mass of the ashes formed must be equivalent to the mass of the wood.
However, due to the formation of other products that happen to always escape into the air, the mass of ashes is not always equal to the mass of the woods that burn.
More on the law of conservation of mass can be found here: brainly.com/question/28711001
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