Is 2Zn + 2HCI = ZnCL2 + H2 balanced or unbalanced

When three pairs of electrons are shared in a molecule, what shape will the molecule be? a. tetrahedral b. trigonal planar c. bent d. linear

Calculate the density of an object that has a mass of 50.7 g and displaces 8.9 mL of water.

Equal amounts of methylene blue (319.85 g/mol) and potassium permanganate (158.034 g/mol) dyes were added to identical agar plates and allowed to diffuse. After 24 hours, the halo was measured to see how far the dyes had moved.

Where can fire might be used as a management tool?

When does a spring tide take place? At the beginning of spring Only during the spring season Only after spring is over At any time

Is sponge cake a heterogeneous mixture

Describe three skills people use to conduct scientific investigations

The surface temperature on Venus may approach 739 K. What is this temperature in degrees Celsius?

Complete the acid-base reaction between butyric acid HC4H7O2 and potassium hydroxide KOH. Do not include phase designations for any of the reactants or products. Be sure to include the charge for any charged species.

What overall effect does adding a catalyst have on a chemical reaction?