What is the approximate molar mass of lauryl alcohol?

The molecular formula of lauryl alcohol  is C12H26O

the approximate molar mass of lauryl alcohol is calculate the mass of 12 carbon , 26 hydrtogen and one oxygen as follows:

12 C* 12.01 g/ mole +26 H*1.008 g/ mole  +15.99 g/mole

= 144.12 g/ mole +26.208 g/ mole +15.99 g/mole

= 186.318 g/ mole

calculate how many grams of ammonia can be produced from 4.21 grams of

n2 + 3h2 = 2nh3

my answer:

25.0g n2 x (1 mol/ 28.0gn2) x (2 mol nh3/ 1 mol n2) x (17.0g nh3/ 1 molnh3) = 30.36g n2

25.0g h2 x (1 mol h2/ 2.00g h2) x (2 mol nh3/ 3 mol h2) x (17.0g nh3/ 1 mol nh3) = 141.67g h2

lr = n2

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as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.