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Alexxandr [17]
3 years ago
10

Ca(OH)2 + HCl CaCl2 + H2O Choose the acidic and basic radical a) H,O b) Ca,H c) Cl,O d) Ca,Cl​

Chemistry
1 answer:
Snowcat [4.5K]3 years ago
5 0

Answer:

Answer is Option A

Explanation:

it's the correct answer

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Use the ideal gas law to calculate the concentrations of nitrogen and oxygen present in air at a pressure of 1.0 atm and a tempe
notka56 [123]

Answer:

[N₂] = 0.032 M

[O₂] = 0.0086 M

Explanation:

Ideal Gas Law → P . V = n .  R . T

We assume that the mixture of air occupies a volume of 1 L

78% N₂ → Mole fraction of N₂ = 0.78

21% O₂  → Mole fraction of O₂ = 0.21

1% another gases  → Mole fraction of another gases = 0.01

In a mixture, the total pressure of the system refers to total moles of the mixture

1 atm . 1L = n . 0.082L.atm/mol.K . 298K

n = 1 L.atm / 0.082L.atm/mol.K . 298K → 0.0409 moles

We apply the mole fraction to determine the moles

N₂ moles / Total moles = 0.78 → 0.78 . 0.0409 mol = 0.032 moles N₂

O₂ moles / Total moles = 0.21 → 0.21 . 0.0409 mol = 0.0086 moles O₂

4 0
3 years ago
Why does the chemical reaction seen here obey the law of conservation of matter?
ss7ja [257]

Why does the chemical reaction seen here obey the law of conservation of matter?

<u><em>Answer:</em></u>

  • Because there are the same number of atoms of each element shown on both sides

<u><em>Explanation</em></u>

  • As in chemical reactions, atoms bonds are break and new bonds are formed. As new substance are formed but overall they have same elements, no new elements come from outside or go to outside. In other words , rearrangement of atoms take place but number of atoms remained same.

                            NaOH + HCl -----> NaCl + H2O

  • As in above reaction there are the same number of atoms of each element shown on both sides .
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Answer:

Sulfur is a non mental, because it is consistent with the 3 physical properties listed for nonmetals

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GuDViN [60]
It would have .03215 grams left
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3 years ago
Given the formula for an organic compound:
Dmitriy789 [7]
Based on the picture,
The name given to the group in the box would be : Ethyl

You can see that in the picture it has 2 carbon side chains, which mean it categorized as Ethyl

hope this helps
3 0
3 years ago
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