Lithium-6 has a mass of 6.0151 amu and lithium-7 has a mass of 7.0160 amu. the relative abundance of li-6 is 7.42% and the relative abundance of li-7 is 92.58%. based on this data alone, calculate the average atomic mass for lithium to the correct number of significant digits.

The diagram below shows the different phase transitions that occur in matter. which arrow represents the transition in which dew is formed?

In a ni-cd battery, a fully charged cell is composed of nickelic hydroxide. nickel is an element that has multiple oxidation states. assume the following proportions of the states: nickel charge proportions found 0 0.17 +2 0.3 +3 0.33 +4 0.5 (a) determine the mean of the nickel charge. enter the answer to 2 decimal places.(b) determine the cumulative distribution function of nickel charge.

Astudent pours 10.0 g of salt into a container of water and observes the amount of time it takes for the salt to dissolve. she then repeats the process using the same amounts of salt and water but this time she slowly stirs the mixture while it is dissolving. the student performs the experiment one more time but this time she stirs the mixture rapidly. the dependent variable in this experiment is: time for salt to dissolve speed of stirring amount of water mass of salt