Which radiation detection device is the best to use for measuring the presence of radiation in large moving objects where constant monitoring is impossible? film badge Geiger counter cloud chamber scintillation counter

Which phrase describes a solution? A. A homegeneous mixture B. A graduated substance C. A heterogeneous mixture D. A primary mixture of elements

What is the atomic mass? A: The sum of the protons and neutrons B: The difference of the protons and neutrons C: The sum of the protons and electrons D: The difference of the protons and electrons.

In the 1990's, biologists studied the alligator population in Lake Apopka, Florida. This lake experienced a chemical spill of the pesticide dicofol in 1980, and researchers wanted determine the effects of the pollution on organisms in the area.

If a truck goes 30 km In 30 minutes what is the average speed

What is one chemical property of iron? A) Iron is malleable. B) The density of iron is 7.86 g/cc. C) Iron combines readily with oxygen. D) Iron is a good conductor of electricity and heat.

What information does a net ionic equation give that a complete ionic equation does not show

What is the molality of a solution containing 4.0 moles of solute in 3.2 kg of solvent? Round to the nearest tenth. Don't forget the units.

What is the name of a binary compound made up of lithium and chlorine?

A scientist in London and a scientist in California both conducted independent investigations that produced similar results.

When magnesium combines with oxygen, the reaction involves a. a conversion of protons into electrons. b. sharing of electrons between Mg and O. c. transfer of electrons from Mg to O. d. transfer of electrons from O to Mg.