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3 years ago

A solution is considered neutral if its pH is _________ 7.

Chemistry

2 answers:

liraira [26]3 years ago

7 0

When the solution has a ph equal to 7

Alexus [3.1K]3 years ago

3 0

Answer:

a, equal to

Explanation:

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KMnO4 + H2S + HCl KCl + MnCl2 + H2O + S8 Did Cl change oxidation number? Yes, no Did Oxygen change oxidation number? Yes, no Did

valkas [14]

Explanation:

KMnO4 + H2S + HCl --> KCl + MnCl2 + H2O + S8

Did Cl change oxidation number?

The oxidation number of Cl in Reactant side is -1

The oxidation number of Cl in product side is -1

Did Oxygen change oxidation number?

The oxidation number of O in Reactant side is -2

The oxidation number of O in product side is -2

Did H change oxidation number?

The oxidation number of H in Reactant side is 1

The oxidation number of H in product side is 1

Did Mn change oxidation number?

The oxidation number of Mn in Reactant side is +7

The oxidation number of Mn in product side is +2

YES

Did S change oxidation number?

The oxidation number of S in Reactant side is -2

The oxidation number of S in product side is 0

YES

Oxidizing agent (element with decrease in oxidation number) = Mn

Reducing agent (element with Increase in oxidation number) = S

4 0

3 years ago

What action is a result of gravity in relation to moving tectonics plates

yarga [219]

Answer:

When the denser tectonic plate dives beneath another plate it is due to the high energy by the Earth’s gravity that pushes into the mantle. Earth’s tides, which are caused by a gravitational tug of the Moon and the Sun, also put extra strain on geological faults. how to prepare for an earthquake

Explanation:

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3 years ago

While searching for nectar, a hummingbird travels 5 meters from one flower to another in 0.33 seconds. How fast does the humming

devlian [24]

Answer:

Hummingbirds have a very high metabolism and must eat all day long just to survive. They consume about half their body weight in bugs and nectar, feeding every 10-15 minutes and visiting 1,000-2,000 flowers throughout the day.

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3 years ago

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Which of the following techniques is most appropriate for the recovery of solid KNO3 from an aqueous solution of KNO3?A. Paper c

r-ruslan [8.4K]

Answer:

E. Evaporation to dryness

Explanation:

E. - Evaporation to dryness is the best method for the recovery of solid KNO3 from an aqueous solution of KNO3.

(KNO3 is very soluble, and will violently decompose if overheated.)

Paper chromatography is for separation of different weight molecules in solution.

B. Filtration won't work on a solution

C.Titration would contaminate the salt with something else and is used

to determine concentrations

D. Electrolysis would destroy the salt

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4 years ago

Page. 5. What is the position of alkali metals in the Modern periodec table.

hoa [83]

Answer:

Group 1 ( The Leftmost)

More Information :

The alkali metals are six chemical elements in Group 1, the leftmost column in the periodic table.

They are :

lithium (Li)
sodium (Na)
potassium (K)
rubidium (Rb)
cesium (Cs)
francium (Fr).

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3 years ago

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