Hello, There!
Question↓
put 27,520 in scientific notation
Answer↓
2.752 × 10 to the 4th power Is the Correct Answer!
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The scenario that contains an exact number is 'A) You count 10 people in a room' (Option A).
<h3>What is the exact number?</h3>
An exact number can be considered a discrete variable because it does not involve a continuous range of values in a given measurement.
In conclusion, the scenario that contains an exact number is 'A) You count 10 people in a room' (Option A).
Learn more about discrete variables here:
brainly.com/question/16044695
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The amount of 1,3-dimethyl urea produced would be 32,458 grams or 32.458 kg while that of carbon dioxide would be 16,214 grams of 16.214 kg
<h3>Stoichiometric problem</h3>
From the equation of the reaction, the mole ratio of methyl isocyanate with the products is 2:1 respectively.
Mole of 42,000 kg of methyl isocyanate = 42000/57 = 736.84 moles
Equivalent mole of 1,3-dimethyl urea = 736.84/2 =368.42 moles
Equivaent mole of carbon dioxide = 736.84/2 =368.42moles
Mass of 368.42 moles 1,3-dimethyl urea = 368.42 x 88.1 = 32,458 grams or 32.458 kg
Mass of 368.42 moles of carbon dioxide = 368.42 x 44.01 = 16,214 grams of 16.214 kg
More on stoichiometric problems can be found here: brainly.com/question/14465605
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Fe: 2 x 55.845 = 111.69
O: 3 x 15.9994= 47.9982
111.69 + 47.9982 = 159.69 g/mol
I believe there are 3 significant figures B.
