P4 + 6 H2 --> 4 PH3 If you have 4.5 moles of H2, how many moles of PH3 can you make?​

Which of these best describes the scientific process

After watching the video "zinc strip in copper nitrate solution", and reading the instructions, click on the link labeled "start" just below the drawing of the pencil tip. follow the direction to complete the 3x3 grid. answer the below questions for the portion of the activity in which sn(s) is placed in agno3(aq)

Scientist think that animals with remarkably similar embryo development probably shared a common ancestor