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grigory [225]
2 years ago
11

The lowest concentration that can officially reported for any constituent in drinking water is known as the

Chemistry
1 answer:
allochka39001 [22]2 years ago
4 0

What is the legal limit?

The lowest concentration that can officially be reported for any constituent in drinking water is known as the "Legal Limit".

Contamination of water:

The level that safeguards human health and that water systems can attain with the finest technology is reflected in the regulatory limit for a contaminant.

<u><em>How does it occur:</em></u>

  • Plumbing components are the main way that lead and copper enters the drinking water. The health effects of lead and copper exposure can range from brain damage to stomach discomfort.
  • Nitrogen, bleach, salts, pesticides, metals, bacterial toxins, and human or animal medications are examples of chemical pollutants. Organisms in the water are biological pollutants. Other names for them include microorganisms and microbiological pollutants.

In order to control corrosion, the system must take a variety of additional measures if lead concentrations reach an action threshold of 15 ppb or copper concentrations exceed an action level of 1.3 ppm in more than 10% of measured customer taps.

Learn more about the contamination of water here,

brainly.com/question/7910855

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katrin2010 [14]

I believe the balanced chemical equation is:

C6H12O6 (aq) + 6O2(g) ------> 6CO2(g) + 6H2O(l) 

 

First calculate the moles of CO2 produced:

moles CO2 = 25.5 g C6H12O6 * (1 mol C6H12O6 / 180.15 g) * (6 mol CO2 / 1 mol C6H12O6)

moles CO2 = 0.8493 mol

 

Using PV = nRT from the ideal gas law:

<span>V = nRT  / P</span>

V = 0.8493 mol * 0.08205746 L atm / mol K * (37 + 273.15 K) / 0.970 atm

<span>V = 22.28 L</span>

6 0
3 years ago
Methanogenic bacteria convert acidic acid (CH3COOH) to CO2(g) and CH4(g)
Y_Kistochka [10]

The enthalpy of the reaction can be obtained from the enthalpies of formation as  -16.2 kJ/mol.

<h3>What is the enthalpy of reaction?</h3>

We know that any time that there is a chemical  reaction, there is an interaction that place between the reactants and the products and as such we are going to get new substances and these are the substances that I have referred to here as the products of the reaction.

In this case, we are asked to obtain the enthalpy change of the reaction. This tells us the heat that could have been absorbed or evolved in the reaction. We have to at this point know that the enthalpy change of the reaction gotten from;

Sum of enthalpy of the products - Sum of enthalpy of the reactants

ΔH = [(-484.5)] - [(-393.5) + (-74.8)]

ΔH = (-484.5) + 468.3

ΔH = -16.2 kJ/mol

Learn more about enthalpy:brainly.com/question/3393755

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5 0
2 years ago
An atom that has 13 protons and 15 neutrons is isotope of the element
wariber [46]
Answer=c

Atoms dont "lose" or "gain" protons, if they did, they'd be completely different elements. So basically, anything with 13 protons is a form of Aluminum.
7 0
3 years ago
Letters B and C on this model show us daytime on Earth. Both locations have daytime because of A) Earth's tilt on its axis. B) E
ch4aika [34]
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Complete the balanced molecular chemical equation for the reaction below.
Alenkasestr [34]

Answer:

Following are the complete balance of the given equation:

Explanation:

Given equation:

Cu_2SO_4(aq) + Li_3PO_4(aq)

Cu_2So4\ (aq)+Li_3Po_4 \(aq) \longrightarrow Cu_3(Po_4)\ (aq)+Li_2So_4 \ (aq)

After Balancing the equation:

3 Cu_2So4\ (aq)+ 2 Li_3Po_4\ (aq) \longrightarrow 2 Cu_3(Po_4)\ (aq)+ 3Li_2So_4 \ (aq)

In the above equation, when the 3 mol Copper sulfate reacts with 2 mol lithium phosphate , it will produce 2 mol Copper phosphate  and 3 mol Lithium sulfate .

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3 years ago
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