A solution containing 20. 0 g of an unknown liquid and 110. 0 g water has a freezing point of -1. 32 °c. Given kf = 1. 86 °c/m for water, the molar mass of the unknown liquid is g/mol.

In the image, layer a is the topmost layer. layer c contains fossils from the precambrian era. layer b contains dinosaur fossils, and layer a contains fossils of mammals. which two statements are supported by this evidence? 1. mammals lived before the precambrian era. 2. dinosaurs and mammals existed in the precambrian era. 3. dinosaurs evolved after precambrian organisms. 4. precambrian organisms evolved after dinosaurs. 5. precambrian organisms were the first life-forms to become fossilized, according to this sample.

Match each fossil with the layer where it’ll be present based on those conditions.

Ineed so much with both of these tot