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mario62 [17]
3 years ago
13

The ratio of boys to girls at a school

Chemistry
1 answer:
Marat540 [252]3 years ago
5 0

Answer:

Si tú puedes 1-2-3-4-5-6-7-8-9-10 eso debes de ser más bien dicho sacaran Club Ojalá que te ayude Chau

Explanation:

de Ojalá que te ayude No te olvides de sacar todas las preguntas esas lo que tú dijiste y si tú promoción 123 saquen globo que quieras tú

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In part 2 of the experiment, you will be analyzing a sample of household bleach. A 0.0854 g sample of household bleach is comple
marysya [2.9K]

Answer:

The correct answer is option d.

Explanation:

NaClO(aq)+2KI(s)+H_2O(l)\rightarrow NaCl(aq)+I_2(aq)+2KOH(aq)..[1]

I_2(aq)+2Na_2S_2O_3(aq)\rightarrow 2NaI(aq)+Na_2S_4O_6(aq)..[2]

moles of sodium thiosulfate solution = n

Molarity of the sodium thiosulfate solution = 0.150 M

Volume of sodium thiosulfate solution used = 0.890 mL = 0.00089 L

n=Molarity\times Volume (L)

n=0.150 M\times 0.00089 L=0.0001335 mol

According to reaction [2], 2 moles of sodium thiosulfate reacts with 1 mol I_2.

Then , 0.0001335 mol of sodium thiosulfate will reacts with:

\frac{1}{2}\times 0.0001335 mol=0.00006675 mol of I_2

Moles of I_2 = 0.00006675 mol

According to reaction [1], 1 mol of I_2 is obatnied from 1 mol of NaClO.

Then 0.00006675 mol of I_2 will be obtained from:

\frac{1}{1}\times 0.00006675 mol=0.00006675 mol

Mass of 0.00006675 mol of NaClO=

0.00006675 mol × 74.44 g/mol = 0.00496887 g

Mass of sample = 0.0854 g

Percentage of NaClO in sample:

\frac{0.00496887 g}{0.0854 g}\times 100=5.82\%

4 0
3 years ago
1-Are natural resources renewable or nonrenewable?
vivado [14]

Answer:

1- Natural sources are renewable with time

2- To refrain from over usage of products on unnecessary things

3- An example of poor soil management is using the soil with the most minerals to put houses on instead of farming with

8 0
3 years ago
Determine the number of particles present in 8.6 moles of Aluminum
katrin [286]

Answer:

5,18*10^{24}

Explanation:

N=n*Na

N=8.6*6.02*10^{23}

N=5,18*10^{24}

4 0
3 years ago
13.3 g of benzene (C6H6) is dissolved in 282 g of carbon tetrachloride. What is the molal concentration of benzene in this solut
Verizon [17]

Answer:

0.605 molal

Explanation:

molality is the amount of solute in a particular mass of solvent.

lets calculate the amount of benzene solute.

mass of benzene= 13.3g

molar mass of C6H6= 12*6 +1*6 =72+7=78g/mol

amount of benzene= mass/molar mass

                           =13.3/78

                          =0.1705mol

molality= amount of solute/mass of solvent in kg

mass of solvent=282g=0.282kg

molality = 0.1705/0.282

    =0.605 molal

6 0
2 years ago
What might a discordant coast look like?
Nastasia [14]
When a different rock type goes perpendicular to a another coast i hope this helped
3 0
2 years ago
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