What type of reaction is

Na2S (I) + CdNO3 (I) = > CdS (s) + 2NaNO3 (I)

A. Double-Displacement

B. Single-Displacement

C. Decomposition

D. Synthesis

Which chemical change causes a cake to rise? formation of a precipitate production of a gas change in state change in color

How many moles of chloride ions are present in a 150.0 mL solution of CaCl2 that has a concentration of 0.340 M?

How many molecules are 24.7 grams of methane gas?

2CO + O2 - -> 2002 Mole conversions 1 mole = 6.02 x 1023 1 mole = molar mass 1 mole = 22.4L gas at STP If you start with 4 mole of O2 how many moles of CO2 will be produced?

List the changes in states of matter.

Heat is defined as the ...

The liquid substances mercury (density = 13.6 g/ml), water (1.00 g/ml), and cyclohexane (0.778 g/ml) do not form a solution when mixed, but separate in distinct layers. list how the liquids would position themselves in a test tube.

What element is used to make expensive forks spoons and tableware?

What is the mass number of an atom of 5 protons and 7 nuetrons

Okay so I'm trying to understand something for my CER. I did a lab on objects that have an equal mass but volume and density vary. Now I need to defend why the volume increased and the density decreased.