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3 years ago

12

What is the scientific method?

1 answer:

AysviL [449]3 years ago

3 0

C. a plane for forming a scientific hypotheses

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How many moles of PCl5 can be produced from 22.0 g of P4 (and excess Cl2)?

scoundrel [369]

The balanced chemical reaction is written as:

P4 + 10Cl2 = 4PCl5

To determine the moles of PCl5 produced, we use the initial amount of the limiting reactant which is P4 and the relation from the reaction. We do as follows:

22.0 g P4 ( 1 mol / 123.90 g ) ( 4 mol PCl5 / 1 mol P4 ) = 0.7103 mol PCl5 produced

8 0

3 years ago

An atom of 24/11 na decays by gamma decay which atom is left after the decay

hammer [34]

Answer:

Hello There!!

Explanation:

The atom is still 24Na.

hope this helps,have a great day!!

~Pinky~

6 0

2 years ago

Condensed structural formula of benzoic acid

Deffense [45]

Hmmm I’m not sure just to to quizlet for now but that seems kinda like science and elements

5 0

2 years ago

Sodium thiosulfate, Na 2S 2O 3, is used as a "fixer" in black and white photography. Identify the reducing agent in the reaction

Tatiana [17]

Answer: Reducing agent in the given reaction is $S_{2}O^{2-}_{3}$ .

Explanation:

A reducing agent is defined as an element which tends to lose electrons to other element leading to an increase in its oxidation number.

In the given reaction, oxidation state of sulfur in $S_{2}O^{2-}_{3}$ is +2 and $I_{2}(aq)$ has 0 oxidation state.

In $S_{4}O^{2-}_{6}(aq)$ oxidation state of S is 2.5 and in $2I^{-}(aq)$ oxidation state of I is -1.

Since, an increase in oxidation state of S is occurring from +2 to +2.5. Hence, it is acting as a reducing agent.

Thus, we can conclude that reducing agent in the given reaction is $S_{2}O^{2-}_{3}$ .

8 0

3 years ago

What is a layer of solid of the solid earth<br>

nikitadnepr [17]

The answer is The mantle

6 0

3 years ago