Aperson's blood pressure has a systolic pressure of 144\pm±3.2 mm hg. what is the percent uncertainty?

statements like this are always representing the number in the following format:

a\pm\delta aa±δa

to convert to a percentage, all you need to do is calculate

\frac{\delta a}{a}\cdot100\%δaa⋅100%

Base your answer on the information below and on your knowledge of chemistry. nitrogen dioxide, no2, is a dark brown gas that is used to make nitric acid and to bleach flour. nitrogen dioxide has a boiling point of 294 k at 101.3 kpa. in a rigid cylinder with a movable piston, nitrogen dioxide can be in equilibrium with colorless dinitrogen tetroxide, n2o4. this equilibrium is represented by the equation below. 2no2(g) n2o4(g) + 58kj at standard pressure, compare the strength of intermolecular forces in no2(g) to the strength of intermolecular forces in n2(g).

Can someone me with questions 15 to 17 plz.

Use examples from the article to explain one positive and one negative effect that chemistry has had on society.