An herbicide contains only c , h , cl , and n. The complete combustion of a 275. 0 mg sample of the herbicide in excess oxygen produced 287. 6 ml of co2 and 167. 8 ml of h2o vapor at stp. A separate analysis determined the 275. 0 mg sample contained 75. 82 mg cl. Determine the percent composition of the herbicide.

Nathan is an ecologist. he’s studying the effect of secondary consumers on primary consumers. his current research focuses on a population of blue jays and crows. they eat caterpillars and mice. if the number of blue jays increases, what are the likely effects on other populations? 1the number of crows will increase. 2the number of mice will decrease. 3the number of mice will remain the same. 4the number of caterpillars will decrease.

Suppose you live in location a, a part of the united states with a semiarid climate . you travel to location b, which is in a neighboring area . there you would find a humid continental climate. in which direction is location b likely to be , relative to location a? what is an explanation for the difference

Mark the brainliest 19 points for you a student uses a liquid thermometer to measure the temperature of a substance in a beaker during science class. the teacher says that the measurement is incorrect. which are the most likely reasons the liquid thermometer could have measured the wrong temperature? check all that apply. the thermometer was not calibrated electronically. the software connected to the thermometer had errors. the bulb of the thermometer was touching the beaker. the thermometer's bulb was not submerged in the substance. the student stirred the substance with the thermometer.