Fluorine is considered which of the following? ionic compound atomic element molecular element molecular compound none of the above

An airplane specifically designed to fly at high altitudes may have: O A. a battery that provides additional power for the extra thrust needed. O B. an extra engine to burn more fuel and create more thrust. O C.

Balancing the following equations: (a) PCl5 (s) + H2O (l) - > POCl3 (l) + HCl (aq) (b) Cu + HNO3 - > Cu (NO3) 2 + H2O + NO (c) H2 + I2 - > HI (d) Fe + O2 - > Fe2O3 (e) Na + H2O - > NaOH + H2 (f) (NH4) 2Cr2O7 - > Cr2O3 + N2 + H2O (g) P4 + Cl2 - >

15 ml of mixture of c2h4 and ch4 after oxidation with o2 gave 20ml ofco2 gas express the composition of the mixture in volume measure all volume measurements are at the same temperature and pressure?

How many moles in 150 grams of rubidium sulfate

Which element is a metalloid? a. argon (ar) b. silicon (si) c. potassium (k) d. magnesium (mg)

Fluorin is often added to drinking water and toothpaste

What larger energy does light energy come from?

Allows water to pass through easily

Which is a cause of desertification? A. farming B. creating reservoirs C. overgrazing D. driving motor vehicles

What happens when the threat of exposure to dirty air is reduced in a community? There is enough oxygen available for people's lungs to function normally The amount of indoor air pollutants released during a fossil fuel burn decreases There is a