O-18 is used as a tracer in many hydrologic studies. It is most often used as a component in a mixing-model and hydrograph separation, as O-18 acts conservatively and is applied naturally and uniformly over broad areas. O-18 can be used when different sources (old water/new water) have different isotopic values.

5 0

3 years ago

Antacids, such as Alka-Seltzer, use the reaction of sodium bicarbonate with citric acid in water solution to produce a fizz as f

Alex17521 [72]

Answer:

2.8248 g

Explanation:

First, consider the balanced chemical equation:

$3NaHCO_{3} +C_{6}H_{8}O_{7} --->3CO_{2} +3H_{2}O +Na_{3}C_{6}H_{5}O_{7}\\$

Then we calculate the number of moles in 4.11 g of citric acid:

n(citric acid)= $\frac{4.11g}{192g/mol}=0.0214mol$

According to the balanced reaction, one mole of citric acid produces 3 moles of carbon dioxide. That's 3 times the number f moles of citric acid. So we will do the same with the available number of moles of citric acid.

so n(carbon dioxide) = 0.0214 mol*3=0.0642 mol

mass(carbon dioxide)= mass*molar mass=0.0642 mol* 44g/mol

= 2.8248 g

8 0

3 years ago

Determine from the balanced chemical reaction if

djyliett [7]

Answer:Correct

Explanation:According to the balanced chemical reaction, 2 mol FeBr3 are consumed for every 3 mol Na2S consumed.

7 0

2 years ago

Ano ang kaganapan na nangyari at nasabing nagsimula ang holy ramon empire

Ksenya-84 [330]

Answer:

plzz give the question in English

5 0

3 years ago

HCl + ca(oh)2 - - -??​

HCl + ca(oh)2 - - -??