If you mixed 50.0 mL of 20.0℃ water with 50.0 mL of 40.0℃ water what you expect the final temperature of the mixture to be?

What are scientists who study fossils called? ( a ) astronomers. ( b ) biologists. ( c ) geologists. ( d ) paleontologists.

Is 9 correct? and can someone me with 10? it’s due tomorrow, you

An animal cell loses the ability to convert energy stored in food to energy that the cell can use. which of the cell's organelles has stopped working? a.the mitochondria b.the nucleus c.the vacuoles d.the endoplasmic reticulum