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Tcecarenko [31]
3 years ago
11

Help this is for ap ex help me please

Chemistry
1 answer:
eduard3 years ago
6 0

Answer:

c

Explanation:

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Giving brainly if correct​
Kamila [148]

Answer:

D

Explanation:

filtration, the process in which solid particles in a liquid or gaseous fluid are removed by the use of a filter medium that permits the fluid to pass through but retains the solid particles.

Hope that helps

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Can I have brain pls

6 0
2 years ago
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Suppose that a certain biologically important reaction is quite slow at physiological temperature (37 oC) in the absence of a ca
Oksi-84 [34.3K]

Answer:

30 kJ

Explanation:

Arrhenius equation is given by:

k=Aexp(-Ea/RT)\\

Here, k is rate constant, A is Pre-exponential factor, Ea is activation energy and T is temperature.

taking natural log of both side

ln k = ln A - Ea/RT

In Arrhenius equation, A, R and T are constant.

Therefore,

ln\frac{k_2}{k_1} =\frac{Ea_1-Ea_2}{RT}

Ea_1-Ea_2 is the  lowering in activation energy by enzyme,

R = 8.314 J/mol.K

T = 37°C + 273.15 = 310 K

\frac{k_2}{k_1} =1\times 10^5

ln 1\times 10^5 =\frac{Ea_1-Ea_2}{RT}\\{Ea_1-Ea_2} = 11.512 \times 8.314 \times 310\\=29670\ J\\=30\ kJ

4 0
3 years ago
Enthalpy change depends on the rate at which a substance is heated or cooled true or false
Dahasolnce [82]
Enthalpy is a thermodynamic quantity that describes the heat content of a system, that can not be measured directly. That's why we measure change in enthaply, measured in the units joules. The statement that e<span>nthalpy change depends on the rate at which a substance is heated or cooled is false. Enthalpy change depends only on the following factors:
-</span><span>physical state of reactants and products
- quantity of reactants</span><span>
- allotropic modifications
- temperature and pressure</span><span>
</span>
6 0
3 years ago
What is the name of this formula?
Alex_Xolod [135]

Answer:

Iron(III) Oxide

Explanation:

You can tell that this formula is for the molecule Iron(III) oxide because it has two iron atoms and three oxygen atoms.

Fun Fact: There are three main types of iron oxides, with this being one of them.

Hope this helped! :^)

3 0
2 years ago
Which of the following represents a compound? C20 H2O O2 H2
Andre45 [30]
The answer is C2O.............
7 0
3 years ago
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