5.4.3 Test (CST): Nuclear Energy Is Da Bomb Question 19 of 25
The half-life of gold-198 is 2.7 days. After 5.4 days, how much of the original
gold-198 remains?
A. one-quarter
O B. one-half
Ο Ο
C. all
D. none
SUBMIT

The covalent compound acetylene, which is the fuel of the oxyacetylene torch used by welders, has the molecular formula c2h2. the covalent compound benzene, a commercial solvent, has the molecular formula c6h6 each of these covalent compounds contains carbon and hydrogen atoms in a one-to-one ratio. would it be correct to write the chemical formulas of each as ch? explain.

What material does not melt at any temperature

Which element is the least metallic between cadmium, silver, zinc, or iron?