A chemist combined chloroform (chcl3) and acetone (c3h6o) to create a solution where the mole fraction of chloroform, chloroform, is 0. 219. The densities of chloroform and acetone are 1. 48 g/ml and 0. 791 g/ml, respectively. Calculate the molarity of the solution. Assume the volumes are additive.

The ancestors of horses possessed feet with five digits. over time, with the development of grasslands, the digits fused and formed hooves. what evolutionary advantage did this transformation serve? a. it allowed them to climb rocky surfaces with ease. b. it allowed them to graze better. c. it enabled them to run faster from predators. d. it let them see clearly through the grasslands. e. it made them taller.

When your working with the passage-based reading questions on the psat do all of the following except. a)make sure you read each question throughly. b) try to answer each question before you look at the answers. c) plan to spend most of your time reading the passage. d) make sure your answer choice is the most correct number me

Earth takes in thermal energy from the sun in a process called . sunlight strikes earth’s surface at different angles. this angle is called the angle of . btw its