Why do scientists use frequencies in the VHF range?

a. It is the same frequency of many animal calls

b. It can travel long distances

c. It doesn't hurt animals

d. Most animals don't make sounds in that range

Which property describes a mixture? Select three options. It can be separated by physical methods. It has a single chemical composition. It can appear different from different sources. It cannot be described by a chemical symbol or formula.

How many chromium ions are in the compound chromium (ii) nitrate?

Which of the following statements is true? The Periodic Table is organized in order of atomic number. Elements in the same period have similar properties. Substances in a mixture lose their unique properties.

At STP, an element that is a brittle solid and a poor conductor of heat and electricity could have an atomic number of (1) 12 (3) 16 (2) 13 (4) 17

Determine the mass of KNO3 that dissolves in 100 grams of water at 40°C to produce a saturated solution

What is a characteristic of nuclear fusion

How many moles are in 32 g of o2

The temperature of a substance is a measure of the average Select one: a. attractive forces between its molecules b. mass of its molecules c. potential energy of its molecules d. kinetic energy of its molecules

Which molecular geometry is least likely to occur with sp3 hybridization? tetrahedral trigonal planar bent trigonal pyramidal

The number of moles in 118.0g of calcium chloride