Explanation for Question 49 From the Reading Section on the 2019 October Sat
Question 49 says according to the passage NASCAR's team use nitrile rubber and it's 2 study because, so let's look into the passage at the first kind of 3 introduction of the idea of using non trial rubber to get some context here. 4 So we find the first mention of natural rubber starting around 5 line 55. These sentences say chemists typically accomplish this by 6 synthesizing polymers in the presence of Sylvans by because lignin in a synthetic 7 rubber containing acrylonitrile and Buda Dene called nitrile rubber. 8 So there is that first mention of the nitrile rubber, 9 both have chemical groups in which electrons are unequally distributed, 10 and therefore likely to interact Nasker and child Tran who performed milk mixing in 11 characterization experiments. Instead tried to couple the two in a melted phase 12 without solvents. So here we can tell that this 13 is the reason why they're using this nitrile rubber. 14 And the reason we can tell that is because it says, 15 because of this thing happening. 16 So this clause here, so 17 because of this one thing is happening, this other thing is happening. 18 So that other thing would be Nasker and child Tran instead trying to couple 19 the two in a melted phase without solvent. 20 So another kind of key thing here is this without solvents. 21 So let's look at the answer choices here and see which one best matches 22 the idea that they're using this natural rubber, because both of them have chemical 23 groups and therefore, or ch...