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1 year ago

SOMEONE PLEASE HELP ME WILL MARK BRAINLIEST PLEASE!!

Chemistry

1 answer:

Sholpan [36]1 year ago

4 0

moles of oxygen: 1/2 x moles of water

= 1/2 x 7.8 = 3.9

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Where would you look for igneous rocks? Why?

Brut [27]

Answer:

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Explanation: im pretty sure thats right at least

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2 years ago

How do you know if a compound will dissociate or ionize in water?

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2 years ago

The atomic number tells us how many __ or __ an element contains.

CaHeK987 [17]

Answer:-
Electrons or Protons

Explanation:-
Atomic number (Z) is defined as:
>>“The total number of protons in the nucleus of an atom is called atomic number”. All atoms of an element have the same number of protons and electrons.
>>“The total number of protons in the nucleus or electrons revolving around the nucleus of an atom”.
Example:
For instance, Hydrogen has the Atomic number(Z) 1.
Helium has the atomic number 2.
Oxygen has the atomic number 8.
| Note | Atomic number is represented by “Z”. And some ppl don’t consider the 2nd definition it’s upto u to do both or the standard one.

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2 years ago

For each of the following substituents, indicate whether it withdraws electrons inductively, donates electrons by hyperconjugati

aleksandrvk [35]

Answer:

Br- Withdraws electrons inductively

Donates electrons by resonance

CH2CH3 - Donates electrons by hyperconjugation

NHCH3- Withdraws electrons inductively

Donates electrons by resonance

OCH3 - Withdraws electrons inductively

Donates electrons by resonance

+N(CH3)3 - Withdraws electrons inductively

Explanation:

A chemical moiety may withdraw or donate electrons by resonance or inductive effect.

Halogens are electronegative elements hence they withdraw electrons by inductive effect. However, they also contain lone pairs so the can donate electrons by resonance.

Alkyl groups donate electrons by hyperconjugation involving hydrogen atoms.

-NHCH3 and contain species that have lone pair of electrons which can be donated by resonance. Also, the nitrogen and oxygen atoms are very electron withdrawing making the carbon atom to have a -I inductive effect.

+N(CH3)3 have no lone pair and is strongly electron withdrawing by inductive effects.

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2 years ago

How much sulfur (in tons), present in the original materials, would result in that quantity of S)2

Olegator [25]

Sulfur reacts with oxygen to produce sulfur dioxide. That is for every mole of sulfur reacted, one mole of sulfur dioxide also is produced. With the given mole of sulfur dioxide, the amount of sulfur in mass is determined by multiplying the number of moles to the molar mass of sulfur (32 g/mol).

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2 years ago