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wel
3 years ago
8

Methods used by scientists

Chemistry
2 answers:
svet-max [94.6K]3 years ago
8 0

Answer:

scientific method

Explanation:

they use this alot

kaheart [24]3 years ago
8 0

Answer:

Make an observation.

Ask a question.

Form a hypothesis, or testable explanation.

Make a prediction based on the hypothesis.

Test the prediction.

Iterate: use the results to make new hypotheses or predictions.

Explanation:

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Answer:

Your answer would be C.

Explanation:

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For the reaction so3 + h2o h2so4, calculate the percent yield if 500. g of sulfur trioxide react with excess water to produce 57
Lelu [443]
The %  yield  if  500 g of  sulfur trioxide  reacted  with  excess  water to   produce  575 g  of  sulfuric  acid is calculated using  the  below  formula


%  yield = actual  yield/ theoretical  yield  x100

actual  yield =575 grams
to  calculate  theoretical  yield
find the  moles  of SO3   used =mass/molar  mass
=  500g/   80 g/mol =6.25  moles

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by   use of  mole ratio  of SO3  :  H2SO4 which  is 1:1  the moles of H2SO4  is  also=  6.25  moles

the theoretical  yield of H2SO4 is therefore =  moles /molar  mass
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%yield  is therefore= 575 g/612 g   x100=  93.9  %

5 0
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kvasek [131]
Hey there,

Question : <span>A climate with short cool summers and long, bitterly cold winters is the?

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Hope this helps :))

<em>~Top♥</em>
</span>
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