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3 years ago

Heat energy is _____ when it moves from one room to another.

1 answer:

6 0

Hello,

Thanks for posting your question here on brainly.

There are 3 ways heat energy can move: Radiation, conduction, and convection.

However, your answer to this is most likely conduction

hope this helps:)

please let me know if it's correct.

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A histidine is involved in an interaction with a glutamic acid that stabilizes the charged form of the histidine, such that the

Greeley [361]

Answer:

pKa of the histidine = 9.67

Explanation:

The relation between standard Gibbs energy and equilibrium constant is shown below as:

$\Delta{G^0} =-RT \ln \frac{[His]}{[His+]}$

R is Gas constant having value = 0.008314 kJ / K mol

Given temperature, T = 293 K

Given, $\Delta{G^0}=15\ kJ/mol$

So, Applying in the equation as:-

$15\ kJ/mol=-0.008314\ kJ/Kmol\times 293\ K\times \ln \frac{[His]}{[His+]}$

Thus,

$15\ kJ/mol=-0.008314\ kJ/Kmol\times 293\ K\times \ln \frac{[His]}{[His+]}$

$\frac{[His]}{[His+]}=e^{\frac{15}{-0.008314\times 293}$

$\frac{[His]}{[His+]}=0.00211$

Also, considering:-

$pH=pKa+log\frac{[His]}{[His+]}$

Given that:- pH = 7.0

So, $7.0=pKa+log0.00211$

pKa of the histidine = 9.67

8 0

3 years ago

Why is the atomic mass of most elements not a whole number?

Crank

The atomic mass is the average of the isotopes of the element meaning most averages of isotopes will not be whole numbers

3 0

3 years ago

100 points! Formation of an Ion

djyliett [7]

$\huge\underline\pink {Answer}$

If every oxygen ion is combined with an aluminium ion has a charge of -2,the charge of each aluminum ion would be -3.

Uncharged Aluminum atom must need to lose it's electrons,in order to form the bond with oxygen which has vacant orbitals

ion

atom that has a positive or negative charge because it lost or gained one or more electrons

chemical bond

the attractive force that holds atoms or ions together

ionic bond

a chemical bond in which one atom loses an electron and the other atom gains electrons to form ions

chemical formula

a combination of chemical symbols and numbers to represent a substance

covalent bond

bond formed by the sharing of electrons between atoms

8 0

3 years ago

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In a soil profile, which is the second layer? solid rock subsoil parent rock topsoil

taurus [48]

Subsoil is the layer of soil under the topsoil on the surface of the ground.

7 0

3 years ago

Cutting, melting, bending, or crushing are examples of what kind of change?

Ksivusya [100]

Answer:

those are all physical changes and most physical changes can be undone like crushing a pice of metal you can flatten it back out you anwser is physical change

Explanation:

8 0

3 years ago

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