Which of the following is used in pencils?

A. Graphite

B. Silicon

C. Charcoal

D. Phosphorous

Which of the following metals forms an amalgam with other metals?

A. Tin

B. Mercury

C. Lead

D. Zinc

Find the average speed of a horse that traveled East for 25 km in 4 hours. A) 6.25 km/h due East 6.25 km/h 62.5 km/h due East 62.5 km/h

The balanced chemical equation, Zn (s) + 2 HCl (aq) - -> ZnCl2 (aq) + H2 (g), can be expressed in words as: Zirconium metal plus hydrogen chloride yields zirconium chloride solution and hydrogen gas Xenon solid plus hydrochloric acid yields xenon

What products would you expect from the reaction of ammonia and sulfuric acid in aqueous solution? 2nh3 (aq) + h2so4 (aq) →?

Consider the reaction: Mg (OH) ₂ (s) ⇌ Mg²⁺ (aq) + 2 OH⁻ (aq) At equilibrium, a 1.0 L reaction vessel contains 5.3 moles of Mg (OH) ₂ and concentrations of 0.0080 M and 0.010 M of Mg²⁺ and OH⁻ respectively. What is Kc for this equilibrium?

Laurie is moving a dresser with a mass of 250kg. She does 126 J of work with a force of 14 N. How far does she move the dresser?

Predict at least two circumstances (outside influences) that would cause a system in equilibrium to change the concentrations of its reactants or products.,

How many atoms are there in 2.3 grams of H?

Which of the following would dissolve in water, and why? None of these substances would dissolve in water Candle wax, it is a nonpolar substance Motor oil, its primary IMF is London Dispersion Forces Acetic acid, it ionizes into ions when added to

Have a region surrounding the central area called

1. Simplify. | A. O 16 B. O C. 04 D. O