4. Among the following elements, which one has the most ionization

energy?

A) Cl

B) Ba

C) Si

D) Br

Suppose ice water is in a closed container at a constant 20°C. What reversible reactions occur in the container?

Which molecule has polar bonding and is nonpolar? 1) H2O 2) BF3 3) NH3 4) NCl3 5) CH2Cl2

Which of the following indicates that an exothermic reaction has taken place? A. a change in color B. release of heat and/or light energy C. cooling of the surroundings D. absorption of heat by the reaction ... ?

Equal volumes of 0.5m HCl and 0.5m NaOH are mixed. The total volume of the resulting mixture is 2 liters. the pH of the resulting solution is A. 1 B. 2 C. 7 D. 4

Which type of land structure forms after a glacier melts

When carbon undergoes sp2 hybridization it forms

Give the formula for molarity

A 54-gram sample of an unknown material has a volume equal to 20 cm3. Based on its density, could the sample be aluminum? Explain

What type of reaction takes place when atoms or molecules rearrange to form new substances?

If you pump air into cycle tyre a slight warming effect is noticed at valve stem why