Answer:
The correct option is: b. pH 6.4-8.0
Explanation:
Phenol red is a weak acid that is used as a pH indicator and exists in the form of stable red crystals.
<u>The color of the phenol red solution changes from yellow to red when the change in pH is observed. The color of phenol red transitions from yellow to red when the pH is 6.8 - 8.2 or 6.4 - 8.0</u>
Above the pH of 8.2, the phenol red solution turns a bright pink in color.
For a normal boiling point of a liquid is 282 °C, the temperature is mathematically given as
T2=181.55°C\
<h3> What
temperature (in °C) would the
vapor pressure be 0.500 atm? </h3>
Generally, the equation for the gas is mathematically given as
ln(p1/p2)=dHvap/R(1/T2-1/T1)
Therefore
ln(1/0.26)=23500/8.214(1/T2-1/555)
T2=181.55^C
In conclusion
T2=181.55°C
Read more about Temperature
brainly.com/question/13439286
<span>e = mc^2
m = e / c^2
Plug in your numbers in the appropriate units.
</span><span>m=1.02 × 10^-5
pulled from another response, hope it helps</span>
Answer:
²³⁵₉₂U
Explanation:
²³⁵₉₂U
The nuclear symbol of U- 235 should be written as;
235 is the mass number of uranium. The mass number is written as the superscript before the symbol of the element.
92 is the atomic number of uranium. It is written as the subscript before the symbol of the element.
