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3 years ago

Why would a scientist want to replicate another scientist's experiment?

Chemistry

1 answer:

choli [55]3 years ago

7 0

Answer:

See the answer below

Explanation:

<u>A scientist B might want to replicate the experiment of another scientist A in order to assess the claims made by scientist A.</u> In other words, replication of the experiment of another scientist is done to see if a similar outcome would be arrived at or there would be variations.

<em>The claims made by a scientist while reporting the outcome of a particular experiment must be reproducible by another scientist under similar conditions. Otherwise, the claims are said to be false.</em>

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What is electrons configuration for arsenic ?

Anna35 [415]

Answer:

[Ar] 3d¹⁰ 4s² 4p³

Explanation:

so...... ur welcome

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2 years ago

1. What is the oxidation number for the silver ion in tarnish?

spayn [35]

Tarnish is Ag2S-silver sulfide and the oxidation state of silver is +1

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3 years ago

Consider the following redox equation Mn(OH)2(s) + MnO4 –(aq)  MnO42 –(aq) (basic solution) When the equation is balanced with

inysia [295]

Answer : The balanced chemical equation is,

$2MnO_4^-(aq)+Mn(OH)_2(s)+4OH^-(aq)\rightarrow 3MnO_4^{2-}(aq)+2H_2O(l)$

The coefficient for $OH^-$ is, 4 and on reactant side of the equation $OH^-(aq)$ is present.

Explanation :

Rules for the balanced chemical equation in basic solution are :

First we have to write into the two half-reactions.
Now balance the main atoms in the reaction.
Now balance the hydrogen and oxygen atoms on both the sides of the reaction.
If the oxygen atoms are not balanced on both the sides then adding water molecules at that side where the more number of oxygen are present.
If the hydrogen atoms are not balanced on both the sides then adding hydroxide ion $(OH^-)$ at that side where the less number of hydrogen are present.
Now balance the charge.

The half reactions in the basic solution are :

Reduction : $Mn(OH)_2(s)+1e^-\rightarrow MnO_4^{2-}(aq)$ ......(1)

Oxidation : $MnO_4^-(aq)+4OH^-(aq)\rightarrow MnO_4^{2-}(aq)+2H_2O(l)+2e^-$ .....(2)

Now multiply the equation (1) by 2 and then added both equation, we get the balanced redox reaction.

The balanced chemical equation in a basic solution will be,

$2MnO_4^-(aq)+Mn(OH)_2(s)+4OH^-(aq)\rightarrow 3MnO_4^{2-}(aq)+2H_2O(l)$

Thus, the coefficient for $OH^-$ is, 4 and on reactant side of the equation $OH^-(aq)$ is present.

6 0

3 years ago

When a liquid is poured through a filter, what happens?

Anestetic [448]

The filter is a material with lots of tiny holes, that only the water can fit through. So flakes of leaf wont be in the water because it couldnt fit through the holes in the filter.

-.--.---./-------
The leaf flakes (periods) dont go through the filter (slash) but water (hiphens) does

4 0

3 years ago

Read 2 more answers

6. A 50-year-old sample of Strontium-90 is found. The half-life of strontium is 29

Gnesinka [82]

Answer:

the sample has mass of 50mg initially

Explanation:

https://youtu.be/ietdukGMG5c

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3 years ago