Calculate the mass in grams of the following: 1. 0.42 moles of iron
2. 7.5 moles of PH3
3. 5.2×10^24 atoms of silver.
Thank you in advance.

Which part of a feedback mechanism is able to monitor the conditions outside of cells and usually uses nerve cells to relay this information to an intergrating center

The variability in marine salinity between habitats does not impact the fish living there. select the best answer from the choices provided t f

What type of energy do chemical bonds have? what type of energy is it converted to during chemical reactions? question 15 options: chemical bonds have kinetic energy, which is converted to potential energy during chemical reactions. chemical bonds have electric energy, which is converted to potential energy during chemical reactions. chemical bonds have heat energy, which is converted to kinetic energy during chemical reactions. chemical bonds have potential energy, which is converted to heat energy during chemical reactions.