Which element above has 6 protons in its nucleus?

a. oxygen

b. carbon

c. phosphorus

d. sulfur?

When we boiling the ice, why after about 15 minutes the temperature of it doesn't change anymore? (answer by temperature/molecules/phase change)

Nitrogen and hydrogen combine at a high temperature, in the presence of a catalyst, to produce ammonia. N 2 (g) + 3 H 2 (g) ⟶ 2 NH 3 (g) Assume 0.140 mol N2 and 0.434 mol H 2 are present initially.

Magnetic potential energy is dependent on A. the position of magnetic objects relative to one another. B. the shape and size of a magnet. C. the distance a magnet has moved from its resting position. D.

What is typically displayed on the y-axis of a solubility curve?

Silver chromate is sparingly soluble in aqueous solutions. the ksp of ag2cro4 is 1.12 * 10-12 m3. what is the solubility (in mol/l) of silver chromate

Which is a waste product of aerobic respiration? A. water B. energy C. oxygen D. glucose

Match the following: Part A 1. matter with no definite shape or volume 2. matter with no definite shape but with definite volume 3. the process of a solid changing directly to a gas without forming a liquid 4.

What is the mass in grams of 390 mL

Around 1910, Rutherford bombarded gold foil with alpha particles. Most of the alpha particles passed straight through. To his surprise, a smaller number were deflected by 180°. This summary recounts the scientific discovery of A.

What is the density? Mass = 120 g Volume = 96 mL