The percentage of additive in gasoline was measured six times with the following results: 0.13, 0.10, 0.16, 0.16, 0.20, 0.18%. Find the 90% and 99% confidence intervals for the percentage of the additive. (Use Table 4-2 to find t values for the calculations.)

(a) 90% confidence interval

(b) 99% confidence interval

The independent variable in an experiment will be the variable that you o a) change ob) hold constant ng c) observe for changes

Asolubility table shows that almost all compounds of group 1 metals are soluble in water. this general rule tells you that mgi2 is soluble rbno3 is soluble cacl2 is soluble co2 is soluble

1. what is boyle’s law? • state the definition of the law in words. • what are the assumptions of boyle’s law? • write at least one mathematical equation that represents the law. • what can be calculated with boyle’s law? • using a gas-filled balloon as an example, describe what is happening to the gas molecules inside the balloon before and after you squeeze it.