Answer: C. Al (aluminum)
Explanation: it has 3 valence electrons :)
Answer:
0.971
Explanation:
The pressure (P) in atmospheres (atm) the balloon was filled to will be
P = P1 +P2 + P3
where P1 is the pressure in atm of Helium (0.5 atm)
P2 is the pressure in atm of Nitrogen (X atm)
P3 is the pressure in atm of Hydrogen (0.4 atm)
The value of P2 provided in the question is in mmHg
To convert we have
1 atm = 760 mmHg
X atm = 54 mmHg
X = 54 × 1/760
X = 0.071 atm
Hence, P2 = 0.071 atm
Thus, from the formula earlier
P = 0.5 + 0.071 + 0.4
P = 0.971 atm
Answer:
Because of pollution and other factors that contain carbon dioxide are warm, and it heats up the air.
Explanation:
Carbon dioxide levels in the Earth's atmosphere have been steadily decreasing. Carbon dioxide has a longer average lifetime in the atmosphere. The warming effect associated with carbon dioxide has remained unchanged
IUPAC name of Na2O is sodium oxide.
<h3><u>Explanation</u>:</h3>
Na2O is the ionic compound containing sodium and oxygen in molar ratio of 2:1. This compound is named by International Union for Pure and Applied Chemistry as Sodium oxide.
This substance is used in a varied number of cases. Its the anhydride of the popularly used base sodium hydroxide. So adding waste produces sodium hydroxide solution. Its used in glass and ceramic factories too. Sodium silicates are also produced from this substance. Its also used to produce soda ash.
