Which general trends in first ionization energy and electronegativity values are demonstrated by Group 15 elements as they are considered in order from top to bottom?

What do all word equations start with? what comes next in the word equation? how is the word equation concluded?

Why does winnipeg have a higher annual temperature gradient than vancouver?

Which of the following statements is FALSE? A) Anions are usually larger than their corresponding atom. B) Metals tend to form cations. C) Atoms are usually larger than their corresponding cation. D) The halogens tend to form 1 + ions.

15 g of NaCl occupy a volume of 75 mL. What is the molarity of the solution?

What is the mass in grams of 0.0135 mol of the element sodium, Na?

The rate constant for the decomposition of acetaldehyde, CH₃CHO, to methane, CH₄, and carbon monoxide, CO, in the gas phase is 1.32 ✕ 10⁻² L/mol/s at 707 K and 3.20 L/mol/s at 851 K. Determine the activation energy (in kJ/mol) for this decomposition.

Northern China experienced drought and southern China had floods in 1997 following warmer-than-average water temperatures in the eastern Pacific Ocean. What likely caused these weather events? A. The jet stream B. La Niña C. An occluded front D.

Would the local wind change if it was nighttime

Does the radius of magnesium increase or decrease as it loses electrons?

Rachel is given 50 grams each of three different white powders that look very similar. She is told that each of these powders is commonly used in cooking. Without tasting any of them, she is asked to try to identify them.