Answer:
Here's what I get
Explanation:
The modern periodic law states that the physical and chemical properties of the elements are periodic functions of their atomic numbers.
Answer:
Explanation:
Cr₂O₃ ( chromium oxide )
Mass of Cr₂O₃⁻ = 2 x 52 + 3 x 16 = 104 + 48 = 152
152 gram chromium oxide contains 104 grams chromium
152 tonnes chromium oxide contains 104 tonnes chromium
5 tonnes chromium oxide contains 104 x 5 / 152 tonnes chromium
mass of chromium required = 104 x 5 / 152 tonnes
= 3.42 tonnes .
Answer:
atoms are the smallest building blocks of elements, the reason why its an average mass is because its so so light to have an 'accurate' and straight forward mass.
Answer:
1) C
Explanation:
Carbon is an element. The other choices are compounds. Elements can be broken down into simpler components.