1.the element silicon would be expected to covalent bond(s) in order to obey the octet rule.
use the octet rule to predict the formula of the compound that would form between silicon and hydrogen , if the molecule contains only one silicon atom and only single bonds are formed.
formula:

2. the element germanium would be expected to covalent bond(s) in order to obey the octet rule. use the octet rule to predict the formula of the compound that would form between germanium and chlorine , if the molecule contains only one germanium atom and only single bonds are formed.

formula:

the answer is c i believe

frequency, z, and the collision density, z, in carbon dioxide (co2), r 180 pm at 30 °c and 120 kpa

it should have an internal chamber and two thermometers sticking out of the top. the internal chamber will also be closed off from the outside.

answer is: nuclear fusion produces elements that are heavier than helium.

nuclei combine to form a heavier nucleus, releasing energy.  

for example, fusion of hydrogen atoms at the sun.  

this fusion nuclear reaction is in the inner core of the sun and hydrogen (atomic number 1) is conveted into helium (atomic number 2).  

the inner core is the central region of the sun and all solar energy is produced in the core by nuclear fusion.