Define the term element 8. Consider the materials in the table below. Each one is representedby the letter
A
B
D
Ste
Glass
Brass
Copper
Plastic
Rubber
steel wool
Write down ONLY the LETTER(S) (A, B,C. etc.) that represent(s) the following
1:21. two non-magnetic metals
22 An element
123 One magnetic material
124 One brittle material
125 One ductile material​

pure substance: iron,copper

impure substance: water,charcoal

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

away from the curb

explanation:

the wheels would then hit the curb if it started to rolling, decreasing the chance of an accident.