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Papessa [141]
3 years ago
6

Antibodies, which are produced by your immune system to search for infections, are made of

Chemistry
1 answer:
Fofino [41]3 years ago
4 0
When the body senses foreign substances (called antigens), the immune system works to recognize the antigens and get rid of them. B lymphocytes are triggered to make antibodies (also called immunoglobulins). These proteins lock onto specific antigens.
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Water molecules are made of slightly positively charged hydrogen atoms and slightly negatively charged oxygen atoms. which force
qwelly [4]
In a chemical system, inter- and intra-molecular forces of interactions are operable. Intramolecular forces are the forces that hold atoms together within a molecule, while intermolecular forces are forces<span> that exist between molecules. Thus, it is intermolecular forces of attraction which holds two or more molecules together.

intermolecular forces are of following types 
1) Dispersion
2) Dipole-Dipole interaction
3) Ion-Dipole Interaction and
4) Hydrogen bonding.

In case of water, it is Hydrogen bonding which is responsible for holding molecules together.

With reference to hydrogen bonding, it must be noted that it</span><span> is an </span>electrostatic<span> attractive interaction between hydrogen atom that is bonded to 
</span>electronegative<span> atom (such as </span>nitrogen<span>, </span>oxygen<span>, or </span>fluorine)<span> and another atom, adjacent to it, which has </span>lone pair<span> of electrons.

In case of water, hydrogen atom of one water molecule interacts with lone pairs of electrons present on oxygen atom of other water molecule.</span>
7 0
3 years ago
When a photon of red light hits metal X, an electron is ejected. Will an electron be ejected if a photon of yellow light hits me
Nuetrik [128]
No i do not believe so because of the different wave lengths that are immersed from the colour spectrum
3 0
3 years ago
In the reaction CuO(s) + CO2(g) → CuCO3(s), a. CO2 is the Lewis acid and CuCO3 is its conjugate base. b. O2– acts as a Lewis bas
adoni [48]

<u>Answer:</u> The correct answer is Option d.

<u>Explanation:</u>

According to Lewis acid-base concept:

The substance which is donating electron pair is considered as Lewis base and the substance which is accepting electron pair is considered as Lewis acid.

For the given chemical reaction:

CuO(s)+CO_2(g)\rightarrow CuCO_3(s)

CO_2 is accepting electron pair and is getting converted to CO_3^{2-}. Thus, it is considered as Lewis acid.

O^{2-} present in CuO is a Lewis base because it is donating electron pair.

Thus, the correct answer is Option d.

4 0
3 years ago
Which element has a more protons in it Boron (B) or Neon (Ne)?
Jet001 [13]

Answer: Neon

Explanation:

Neon has 10 protons

Boron has 5 protons. So neon has more protons.

Hope this helps :) Can u mark me branliest plz

8 0
3 years ago
Read 2 more answers
If you had excess chlorine, how many moles of of aluminum chloride could be produced from 25.0 g of aluminum? Express your answe
m_a_m_a [10]

Answer:

A. From 25,0 g of aluminium you will produce 0,927 moles of aluminium chloride

B. From 30,0 g of chlorine gas you will produce: 0,282 moles of aluminium chloride

Explanation:

a. The reaction that you have in this problem is:

3 Cl₂ + 2 Al → 2 AlCl₃

25,0 g of aluminium are:

25,0 ₓ\frac{1mole}{26,98g} = 0,927 moles

As Al:AlCl₃ ratio is 1, from 25,0 g of aluminium you will produce: <em>0,927 moles of aluminium chloride</em>

b. 30,0 g of chlorine gas are:

30,0 ₓ\frac{1mole}{70,90g} = 0,423 moles of Cl₂

As Cl₂:AlCl₃ ratio is ³/₂:

0,423 moles of Cl₂ ₓ \frac{2 molesAlCl_3}{3 molesCl_2} = <em>0,282 moles of aluminium chloride</em>

Thus, from 30,0 g of chlorine gas you will produce: <em>0,282 moles of aluminium chloride</em>

<em></em>

I hope it helps!

5 0
4 years ago
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