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fomenos
3 years ago
5

Who started sneakers

Chemistry
1 answer:
hodyreva [135]3 years ago
6 0
In late 18th century, people wore rubber soled shoes called plimsolls, but they weren't the best sneakers. Around 1892, a US company named Keds started sneakers with a canvas top and rubber soles. By 1917, these were mass produced.
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How many total orbitals are within the 3s 3p, and 3d sublevels of the third
vredina [299]

Answer: C

Explanation:

The one closest to the atomic center, there is a single 1s orbital that can hold 2 electrons. At the next energy level, there are four orbitals.

4 0
3 years ago
Read 2 more answers
In a common laboratory experiment in general chemistry students are asked to determine:_____.
Alex787 [66]
<h3>The <u>complete question</u> would be:</h3>

In a common laboratory experiment in general chemistry, students are asked to determine the relative amounts of benzoic acid and charcoal in a solid mixture. Benzoic acid is relatively soluble in hot water, but charcoal is not. Devise a method for separating the two components in the mixture.

<h3>The <u>solution</u> for that would be:</h3>

First you put the mixture in hot water and allow the benzoic acid to separate. Next funnel it and then see what's on the funnel paper. Lastly, heat the leftover water and see what's left after it evaporates.

<h3><u>What are laboratory experiments ?</u></h3>
  • Using controlled surroundings to test theories, researchers may develop laboratory experiments.
  • Laboratories are rooms or specially constructed facilities within buildings that are often found on college and university campuses and are utilized for academic research.
  • It's crucial to differentiate between experiments and other kinds of research investigations carried out in lab settings.
  • Even if a research study takes place in a lab, it is not always an experiment.
  • In order to evaluate causal conclusions regarding the links between independent and dependent variables, laboratory studies, like all genuine experimental designs, use procedures of random assignment of participants and control groups.

To view more about experiments, refer to:

brainly.com/question/17143317

#SPJ4

3 0
1 year ago
how can knowledge of percent composition help you as a consumer ? how can you promote responsible consumerism ?​
Nonamiya [84]

Answer:

it is a nice question....my mind tells me that the first is it use me as a good vibes and can use to anything the second i will do my best too absorbe it.

Explanation:

Hope this help...

8 0
3 years ago
The molar solubility of zns is 1.6 Ã 10-12 m in pure water. Calculate the ksp for zns.
Oksi-84 [34.3K]

Answer:

The solubility product of zinc sulfide is 2.56\times 10^{-24}.

Explanation:

Solubility of the zinc sulfide = S=1.6\times 10^{-12}

ZnS\rightleftharpoons Zn^{2+}+S^{2-}

                S        S

The expression of solubility product is given by :

K_{sp}=[Zn^{2+}]\times [S^{2-}]

K_{sp}=S\times S=S^2

=1.6\times 10^{-12}\times 1.6\times 10^{-12}=2.56\times 10^{-24}

The solubility product of zinc sulfide is 2.56\times 10^{-24}.

5 0
3 years ago
A 0.1 M NaCl solution and a 0.2 M glucose solution are separated by a membrane that is impermeable to these solutes but is perme
katovenus [111]

nothing will happen

if you calculate the water potiential for both solutions

you get 2(0.1)(R)(T) and 1(0.2)(R)(T)

which is the same thing, so its isotonic.

7 0
2 years ago
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