How do the three surfaces compare in terms of providing the egg with a safe landing? which ordering below ranks the three surfaces from least safe to most safe? a. hard floor < foam box < 1 inch foam b.1 inch foam < foam box < hard floor c. foam box < 1 inch foam < hard floor d. hard floor < 1 inch foam < foam box be right my grade is literally a 40 i need straight as so my dad can get me a iphone 8 plus

1. 1 mole of anything contains 6.022x10^23 pieces  

d  

2. a  

3. c, number  

5. 1.24x10^24atoms / 6.022x10^23atoms/mole = 2moles h2 atoms  

6. fe2br3 mass = 2moles x mass fe + 3 moles x mass br  

molar mass = grams / number of moles = g/mole  

to find moles = g / molar mass  

to find mass = g = molar mass / moles

a compound is a molecule made of atoms from different elements.

a. by the combination of an unlimited number of elements