A student titrated a weak acid with 0.0994 M NaOH solution. It took the student 34.65mL of NaOH to reach the equivalence point. How many grams of weak acid did the student use for titration, if molar mass of the weak acid was 105.125 g/mol

Based on the position vs. time graph which velocity vs. time graph would correspond to the data

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

Chen drew a diagram to compare the ways in which different organisms obtain nitrogen. which label belongs to the area marked z?