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Scorpion4ik [409]
3 years ago
8

Which of the following is the best instrument to use to prepare a solution?

Chemistry
1 answer:
Semenov [28]3 years ago
5 0
The answer to your question would be D Volumetric Flask 
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The initial explanation for a phenomenon prior to experimentation is called a:
lord [1]
The explanation for a phenomenon is a hypothesis something happened that you sure that was going to happen
3 0
3 years ago
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write the balanced net ionic equation for the reaction of aqueous sodium sulfide with aqueous lead(II) nitrate
ryzh [129]

The balanced net ionic equation for the reaction of aqueous sodium sulfide with aqueous lead(II) nitrate is Pb2+(aq) + S2-(aq) ===> PbS(s).

The chemical equation known as the net ionic equation only displays the substances that are directly involved in the chemical process. It is described how to write a net ionic equation. We only need to take out the spectator ions in order to formulate the net ionic equation. We are left with the net ionic equation after removing the spectator ions! The net ionic equation can be obtained by repeating this procedure for any reaction.

Na2S(aq)   +   Pb(NO3)2(aq)   ===>   2NaNO3(aq)   +   PbS(s)  ...  molecular equation

sodium sulfide....lead(II) nitrate .........sodium nitrate.....lead sulfide

2Na+(aq) + S2-(aq) + Pb2+(aq) + 2NO3-(aq) ==> 2Na+(aq) + 2NO3-(aq) + PbS(s) ...  complete ionic equation

Pb2+(aq) + S2-(aq) ===> PbS(s)  ...  net ionic equation

To know more about net ionic equation refer to:  brainly.com/question/22885959

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7 0
1 year ago
What is the energy of a photon of electromagnetic radiation with a wavelength of 963.5 nm?​ (c = 3.00 × 108 m/s, h = 6.63 × 10–3
dimaraw [331]

Answer:

E=2.06\times 10^{-19}\ J

Explanation:

Given that,

The wavelength of electromagnetic radiation is 963.5 nm.

We need to find the energy of a photon with this wavelength.

The formula used to find the energy of a photon is given by :

E=\dfrac{hc}{\lambda}\\\\E=\dfrac{6.63\times 10^{-34}\times 3\times 10^8}{963.5\times 10^{-9}}\\\\E=2.06\times 10^{-19}\ J

So, the energy of a photon is 2.06\times 10^{-19}\ J.

3 0
3 years ago
Give an example of biotic living conditions.
Brrunno [24]

Answer:

plants and animals

Explanation:

3 0
3 years ago
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Answer with proper significant figure: 27.0 + 14.369
Angelina_Jolie [31]

Answer:

a

Explanation:

4 0
2 years ago
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