Which of these elements is a metal?

Hafnium

Radon

Silicon

Sulfur

Selenium

What is the basic notation for a proton?

Summarize the difference between legal law and scientific law

Which statements accurately describe binary star systems? Check all that apply. have more than two stars, have stars that are always visible include large groups of stars have stars that might appear to wobble often have one star that is brighter

Balanced equation of acetic acid and sodium oxide

Write a balanced nuclear equation for the beta decay of carbon-11.

Carbon monoxide reacts with oxygen to form carbon dioxide. 2 CO (g) + O2 (g) → 2C02 (8) In a 1.00 L flask, 3.40 atm of CO reacts with 2.60 atm of O2. Assuming that the temperature remains constant, what is the final pressure in the flask? 4.30 atm 2.

The nerves that Branch out from the spinal cord and connect to the body

The term southern oscillation most nearly refers to

Which kelvin temperature is equivalent to 20°C

When a piece of magnesium metal is added to hydrochloric acid, what gas is produced?