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Andru [333]
3 years ago
7

Calculate the mass of al2so4)3 in 250ml of solution if the concentration is .48 N​

Chemistry
1 answer:
slamgirl [31]3 years ago
5 0

ddgjooygllfsyyuugffguiiuuhhhhhuccbjji

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What is the relationship between pressure and temperature
hoa [83]

Answer:

The Pressure Temperature Law. This law states that the pressure of a given amount of gas held at constant volume is directly proportional to the Kelvin temperature. With an increase in temperature, the pressure will go up.

Explanation:

7 0
3 years ago
Many important biochemicals are organic acids, such as pyruvic acid ( p K a = 2.50 ) and lactic acid ( p K a = 3.86 ) . The conj
Ivenika [448]

Answer:

Pyruvic acid: conjugate base

Lactic acid: conjugate base

Explanation:

The ratio of conjugate base to conjugate acid can be found using the Henderson-Hasselbalch equation when the pH and pKa are known.

pH = pKa + log([A⁻]/[HA])

The equation can be rearranged to solve for the ratio:

pH - pKa = log([A⁻]/[HA])

[A⁻]/[HA] = 10^(pH-pKa)

Now we can calculate the ratio for the pyruvic acid:

[A⁻]/[HA] = 10^(pH-pKa) = 10^(7.4 - 2.50) = 79433

[A⁻] = 79433[HA]

There is a much higher concentration of the conjugate base.

Similarly for lactic acid:

[A⁻]/[HA] = 10^(pH-pKa) = 10^(7.4 - 3.86) = 3467

[A⁻] = 3467[HA]

For lactic acid the conjugate base also dominates at pH 7.4

6 0
4 years ago
What kind of weather would you find on Mercury? A) A very thin atmosphere and temperatures vary from 427 degrees to -180 degrees
trasher [3.6K]

Answer:

A) A very thin atmosphere and temperatures vary from 427 degrees to -180 degrees Celsius (800 to -292 degrees Fahrenheit)

Explanation:

I did this quiz and this was the answer.

7 0
3 years ago
Read 2 more answers
Please tell me the answer of this question, first person to answer will be marked brainlist
e-lub [12.9K]
It’s the elephant because it’s bigger in size and it covers more surface area. The mouse is smaller in size. The elephant would be the answer
6 0
3 years ago
Calculate ΔH° = for the chemical reaction
babymother [125]

Answer: \Delta H^0 for the reaction Cl_2(g)+F_2(g)\rightarrow 2ClF(g)  is -108kJ

Explanation:

The balanced chemical reaction is,

The expression for enthalpy change is,

\Delta H=[n\times B.E_{reactants}]-[n\times B.E{products}]

where, n = number of moles

Now put all the given values in this expression, we get

\Delta H=[1\times B.E_{Cl_2}+1\times B.E_{F_2}]-[2\times B.E_{ClF}]

\Delta H=[(1\times 243)+(1\times 159)]-[2\times 255]

\Delta H=-108kJ

Thus \Delta H^0 for the reaction Cl_2(g)+F_2(g)\rightarrow 2ClF(g)  is -108kJ

4 0
3 years ago
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