What is the empirical formula for a sample containing 81.70% carbon and 18.29% hydrogen? a. chb. ch3c. c2h6d. ch4e. c3h8?

How many atoms are in 1.4 mil of phosphorus trifluoride (pf3)

Pls! plant cells and animal cells were observed under a microscope. the characteristics of two cells are listed below. cell p: does not capture sunlight cell q: has cytoplasm but no chloroplast which statement about the two cells is correct? cell q also has a cell wall. cell q also has large vacuole. cell p also has a large vacuole. cell p also has a cell membrane.

When you mate two plants together the terms is called? answer it fast as possible plz! i have a test tomorrow!