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nataly862011 [7]
2 years ago
13

What does kyle learn at the end

Chemistry
2 answers:
DENIUS [597]2 years ago
4 0

Answer:

Umm who's Kyle?

Explanation:

Illusion [34]2 years ago
3 0

Answer:

his skills aren’t as valuable to the team as he thought

Explanation:

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A sample of carbon dioxide gas that has a volume of 14.6 L at STP contains how many
Nana76 [90]

Answer:

n = 0.651 mol

Explanation:

Given data:

Volume of CO₂ = 14.6 L

Temperature = standard = 273.15 K

Pressure = standard = 1 atm

Number of moles of CO₂ = ?

Solution:

The given problem will be solve by using general gas equation,

PV = nRT

P= Pressure

V = volume

n = number of moles

R = general gas constant = 0.0821 atm.L/ mol.K  

T = temperature in kelvin

by putting values,

1 atm × 14.6 L = n × 0.0821 atm.L/ mol.K   × 273.15 K

14.6 L. atm =  n × 22.43atm.L/ mol

n = 0.651 mol

7 0
2 years ago
Democritus believed that matter is made up of tiny individual particles known as
cluponka [151]
<span>Democritus believed that matter is made up of tiny individual particles known as </span>Atoms
7 0
3 years ago
Read 2 more answers
What element is solid at room temperature shiny malleable and a good conductor of heat
Aliun [14]

Answer:

I believe that it would be copper because copper is all of those things.

Explanation:

6 0
2 years ago
One step in the production of hydraulic power involves _____
eimsori [14]

Answer:

falling water that turns turbines

Explanation:

8 0
3 years ago
Groundwater in Pherric, New Mexico, initially contains 1.800 mg/L of iron as Fe3+. What must the pH be raised to in order to pre
xenn [34]

Answer : The pH will be, 3.2

Explanation :

As we known that the value of solubility constant of ferric hydroxide at 25^oC is, 2.79\times 10^{-39}

Amount or solubility of iron consumed = (1.800 - 0.3) mg/L = 1.5 mg/L

The given solubility of iron convert from mg/L to mol/L.

1.5mg/L=\frac{1.5\times 10^{-3}g/L}{56g/mol}=2.7\times 10^{-7}mol/L

The chemical reaction will be:

Fe(OH)_3\rightarrow Fe^{3+}+3OH^-

The expression of solubility constant will be:

K_{sp}=[Fe^{3+}]\times [3OH^-]^3

Now put all the given values in this expression, we get the concentration of hydroxide ion.

2.79\times 10^{-39}=(2.7\times 10^{-7})\times [3OH^-]^3

[OH^-]=1.5\times 10^{-11}M

Now we have to calculate the pOH.

pOH=-\log [OH^-]

pOH=-\log (1.5\times 10^{-11})

pOH=10.8

Now we have to calculate the pH.

pH+pOH=14\\\\pH=14-pOH\\\\pH=14-10.8\\\\pH=3.2

Therefore, the pH will be, 3.2

4 0
3 years ago
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