Lenses can be found in a variety of objects. Which example does not contain a lens?

A.

a magnifying glass

B.

a telescope

C.

chemical safety goggles

D.

a microscope

Why is water sometimes called the "universal solvent"? a. the adhesión level in H2O is very high b. many substances dissolve in H2O c. the density of H2O is 1.0 g/cm3 d. the hydrogen bonding of H20 is very low

Assume the molar absorptivity (ε) for CoCl42 - at 700 nm is 409.7 M-1 cm-1. If d, the cell path length, is equal to 1.48 cm for the cuvettes being used, and if the measured absorbance (A) at 700 nm is 1.147, what is [CoCl42-]?

What does Xeon and cesium have in common?

Why are spectator ions required for double replacement reactions to occur?

What is the mass of a rectangular cube with dimensions of 3 cm x 2 cm x to 10 cm and a density of 10 g/cm^3

Name 5 types of alloys

What is the 3 types of matters

A sunflower turns its head toward sunlight. What triggers this behavior in a sunflower? gravity phototropism presence of nutrients presence of water

Enter your answer in the provided box. A sample of an unknown gas effuses in 14.5 min. An equal volume of H2 in the same apparatus under the same conditions effuses in 2.42 min. What is the molar mass of the unknown gas

What volume will 0.710 moles of nitrogen gas occupy at STP?