Using the periodic table, which of the following elements has the most properties in common with calcium (Ca) ?

potassium (K)

magnesium (Mg)

scandium (Sc)

argon (Ar)

B). How many mole of mercury (Hg) would be produced from reacting 6 mole of Hgo (mercury (II) oxide) ?

Define prediction and explain how it is used to formulate a hypothesis.

What are the characteristics of visible light.

Which class of biomolecule do molecules belong to

93 mL of water has a given mass of 93 g. which object was more accurate in determining volume, the graduated cylinder or the beaker? why?

Choose the substance with the lowest surface tension. Choose the substance with the lowest surface tension. a) H2O b) (CH3) 2CO c) CH3CH2CH2CH3 d) C6H6 e) CH3OH

Which of the following is not true for atoms? They are building blocks of matter They are made of protons, neutrons, and electrons They are able to be divided by a chemical reaction. They are the smallest particle of any element.

The ductility of a material is the measure of a) The amount of elastic deformation that can be sustained before yielding b) The capacity of a material to absorb energy when it is deformed elastically c) The degree of plastic deformation that has

Consider the polymerization of styrene in toluene at 60°C initiated by di-t-butylperoxide for a solution containing 0.04 mol of initiator and 2 mol of monomer per liter. The initial rates of initiation, Ri, and propagation, RP, are found to be 1.

Which of the dollowing isotopes have 8 neutrons in the nucleus? 0-15 0-17 C13 O C14