What element has two electrons in the outer shell and has electrons in four shells?

What volume of pediatric digoxin injection 0.1 mg/ml is required for a 75 mcg dose

Glycerin (C3H8O3) is a nonvolatile liquid. What is the vapor pressure of a solution made by adding 170 g of glycerin to 337 mL of H2O at 40.0°C? The vapor pressure of pure water at 40.0°C is 55.32 torr and its density is 0.992 g/cm3.

How does electron sharing occur in forming covalent bonds?

Which statement accurately describes the movement of Earth's plates due to convection currents? Material near the core cools as heat is transferred toward the crust. Heated materials become denser, causing them to rise toward the surface.

Why are most fertilizers rich in nitrogen and phosphorous? A) To increase the amount of nitrogen and phosphorous in the soil, which are essential for soil texture.

When a solution is considered to have a high concentration of hydrogen ions (H+) is also considered to be? a) acidic b) basic c) neutral d) hot

Why does the sky change colors at sunset? 1 because the sun changes colors 2 because the atmosphere reflects colors 3 because long wavelengths are scattered the least 4 because short wavelengths are scattered the least

Consider the reaction N2 (g) + 3 H2 (g) 2 NH3 (g), which is exothermic as written. What would be the effect on the equilibrium position of adding N2 (g) ?

According to Table I, which equation represents a change resulting in the greatest quantity of energy released? 1. 2C (s) + 2H2 (g) - > C2H4 (g) 2. 2C (s) + 3H2 (g) - > C2H6 (g) 3. N2 (g) + 3H2 (g) - >2NH3 (g) 4. N2 (g) + O2 (g) - > 2NO (g)

Calculate the number of liters in 3.25 g of ammonia