Determine the quantity of unknown protein that has an absorbance of 0.228 when a blank has an absorbance of 0.082. the previously determined calibration curve has the form of a straight line with the equation a = 0.0182 × x 0.007, where a is the corrected absorbance and x is quantity of protein in units of μg.

Naoki's bicycle has a mass of 10 kg. if naoki sits on her bicycle and starts pedaling with a force of 168 n, causing an acceleration of 2.8 m/s2, what is naoki's mass?

Agroup of students is studying convection currents. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other in an area with warm air. after 10 minutes, the balloons are released from a height of 1 meter. which of the following do the students most likely observe? a. the balloons both rise. the cold balloon is larger than the warm balloon. b. the balloons rise at the same rate. both balloons are the same size. c. the warm balloon expands and rises. the cold balloon shrinks and sinks. d. the cold balloon expands and rises. the warm balloon shrinks and sinks.

What is the overall order of reaction for rate = k[no]2[o2]