A block of wood does not allow any light to be transmitted through it. The block of wood can best be described as

A. transparent.

B. opaque.

C. translucent.

D. invisible.

What are the two sources or heat in earth's interior? A) radioactive decay and convection currents B) magma and liquid outer core C) sunlight and meteor impacts D) leftover heat from formation and radioactive decay

The ionization energy for a hydrogen atom is 1.31*106 J/mol. What is the ionization energy for He+?

Water heater contains 51 gal of water. part a how many kilowatt-hours of energy are necessary to heat the water in the water heater by 25 ∘c?

Methane gas and chlorine gas react to form hydrogen chloride gas and carbon tetrachloride gas. what volume of carbon tetrachloride would be produced by this reaction if of methane were consumed?

What is the volume of the sphere? Round your answer to the nearest tenth. cm

How many total electron will fit in the 1st energy level

Which statement best explains how the models differ? Model A shows the formation of ions, and model B does not show the formation of ions. Model A does not show the formation of ions, and model B shows the sharing of electrons.

What is the enthalpy of combustion (per mole) of C3 H8 (g) ?

Describe how speed, velocity and acceleration are related?

What is 3 ethyl 3, 4 dimethylheptane abbreviated structural formula?