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Alenkasestr [34]
3 years ago
12

Suppose you used 2.613 g of THAM to make the 250 mL THAM solution and it took 38.58 mL of your unknown HCl solution to reach the

end point of the titration. What is the molarity of the HCl solution?
Chemistry
1 answer:
aev [14]3 years ago
6 0

Answer:

good question

Explanation:

hm good theory. how r u

Hello, eve This is the LONGEST TEXT EVER! I was inspired by the various other "longest texts ever" on the internet, and I wanted to make my own. So here it is! This is going to be a WORLD RECORD! This is actually my third attempt at doing this. The first time, I didn't save it. The second time, the Neocities editor crashed. Now I'm writing this in Notepad, then copying it into the Neocities editor instead of typing it directly in the Neocities editor to avoid crashing. It sucks that my past two attempts are gone now. Those actually got pretty long. Not the longest, but still pretty long. I hope this one won't a

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A 0.529-g sample of gas occupies 125 ml at 60. cm of hg and 25°c. what is the molar mass of the gas?
Llana [10]

<span>Let's </span>assume that the gas has ideal gas behavior. <span>
Then we can use ideal gas formula,
PV = nRT<span>

</span><span>Where, P is the pressure of the gas (Pa), V is the volume of the gas (m³), n is the number of moles of gas (mol), R is the universal gas constant ( 8.314 J mol</span></span>⁻¹ K⁻¹) and T is temperature in Kelvin.<span>
<span>
</span>P = 60 cm Hg = 79993.4 Pa
V = </span>125  mL = 125 x 10⁻⁶ m³

n = ?

<span> R = 8.314 J mol</span>⁻¹ K⁻¹<span>
T = 25 °C = 298 K
<span>
By substitution,
</span></span>79993.4 Pa<span> x </span>125 x 10⁻⁶ m³ = n x 8.314 J mol⁻¹ K⁻¹ x 298 K<span>
                                          n = 4.0359 x 10</span>⁻³ mol

<span>
Hence, moles of the gas</span> = 4.0359 x 10⁻³ mol<span>

Moles = mass / molar mass

</span>Mass of the gas  = 0.529 g 

<span>Molar mass of the gas</span> = mass / number of moles<span>
                                    = </span>0.529 g / 4.0359 x 10⁻³ mol<span>
<span>                                    = </span>131.07 g mol</span>⁻¹<span>

Hence, the molar mass of the given gas is </span>131.07 g mol⁻¹

4 0
3 years ago
A scientist observed a 5-mL sample of an unknown substance. It is a blue liquid with a density of 1.2 g/cm. the substance reacts
LenaWriter [7]
Characteristic properties can be used to describe and identify the substances, while non-characteristic properties, although can be used to describe the substances, cannot be used to identify them.

Temperature, mass, color, shape and volume are examples of non-characteristic properties.

Density, boiling point, melting point, chemical reactivity are examples of characteristic properties.

List of the properties observed by the scientist:
-----------------------------------------------------------------
Property                                     Type of property
----------------------------------------------------------------
Volume: 5 ml                              non-characteristic
----------------------------------------------------------------
Color: blue                                 non-characteristic
----------------------------------------------------------------
State: liquid                                characteristic
------------------------------------------------------------
density: 1.2 g/cm                        characteristic
------------------------------------------------------------
Reaction: reacts with CO2         characteristic
----------------------------------------------------------
5 0
3 years ago
Wine is 13 % alcohol by volume. How many milliliters of alcohol are in a 0.900-L bottle of wine?
AURORKA [14]
13% of 0.900 is 0.117
there are 0.117 milliliters of alcohol in a 0.900-L bottle of wine.
3 0
3 years ago
Read 2 more answers
How many molecules are in 3.50 moles of NO2
NeTakaya

Refer pic for answer....

6 0
3 years ago
The molarity of a solution that contains 0.50 moles of naoh in 200.0 milliliters of water is
NARA [144]
200.0 mL =0.2000 L
Molarity = number of mole solute / volume solution(L)  = 0.50 mol/0.2000 L=
= 2.5 mol/L =2.5M

Answer : 2.5 M


5 0
3 years ago
Read 2 more answers
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