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NISA [10]
3 years ago
7

Four different solutions (I, II, III, and IV) are labeled on the pH scale below. A p H scale is shown, fading from red at the le

ft end to blue at the right. p H is shown in even increments from 0 to 14. Points marked are: Roman numeral 1 at 1 on the scale, Roman 2 at 6, Roman 3 at 11, and roman 4 at 13. Why would solution IV be considered the most concentrated base out of the four substances? It has the highest concentration of hydrogen ions. It has the highest concentration of hydronium ions. It has the highest concentration of oxide ions. It has the highest concentration of hydroxide ions.
Chemistry
2 answers:
andreyandreev [35.5K]3 years ago
6 0

Answer: It has the highest number of hydroxide ions

Explanation: I took the review

LekaFEV [45]3 years ago
3 0

Answer:

It has the highest concentration of hydroxide ions.

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a couple of pennies have a mas of 5.2 grams. Asuming that the pennies are 100% percent copper,how many moles of copper are the p
dangina [55]

Answer:

5.2g copper (Cu) => 0.082 moles copper (2 sig.figs.)

Explanation:

mole conversions:

grams to moles => divide by formula wt.

moles to grams => multiply by formula wt.

gas volumes to moles => divide volume by 22.4Liters/mole (STP conditions only)

This problem:

mass to moles => divide by formula wt.

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kiruha [24]
In this item, we are simply to find the ions that may bond and are able to form a formula unit. We are also instructed to give out their name. There are numerous possible combinations of ions to form a compound. Some answers are given in the list below.

1.  Na⁺     ,    Cl⁻    , NaCl   ---> sodium chloride (this is most commonly known as table salt)

2. C⁴⁺       , O²⁻     , CO₂  ---> carbon dioxide

3. Al³+     , Cl⁻       , AlCl₃   ----> aluminum chloride

4. Ca²⁺     , Cl⁻     , CaCl₂    ---> calcium chloride

5. Li⁺        , Br⁻      , LiBr       ---> lithium bromide

6. Mg³⁺     , O²⁻      , Mg₂O₃   ----> magnesium oxide

7. K⁺        , I⁻          , KI   ---> potassium iodide

8. H⁺        , Cl⁻        , HCl  --> hydrogen chloride

9. H⁺        , Br⁻         , HBr ----> hydrogen bromide

10. Na⁺    , Br⁻         , NaBr   ---> sodium bromide
6 0
3 years ago
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