Lv 1105 points

# joey

• ### history of government(help me out)?

political power...central authority...representative assemblies...direct democracy...feudalism...divine law...

1) the greek city-state of Athens was a ______, in which each citizen served in the assembly

2) the 1st people to have _____, over a large area were the ancient romans

3) ___ was a political and military arrangement between a lord and his vassals during the middle ages

4) the lord's courts of the middle ages led to king's councils, modern parliaments, and ______

5) the conflict between ______ and human governments helped lay the foundation for constitutional government.

*matching type*

• ### scale factor?

the top of the water tower has a diameter of 20 feet. find the surface area of the top

help me/?

• ### Dilution (another question )?

calculate the final concentration if 2.00 L of 3.00 NaCl, 4.00 L of 1.50 NaCl and 4.00L of water are mixed. assume there is no volume contraction upon mixing

do you have to do it this way? >>

(2.00 x 4.00 + 3.00 x 1.50)/ 10 = 8.45

?

• ### dilution problems?

HINT: calculate the total moles present and the total volume the molecules are dissolving in

calculate the final concentration if 2.00 L of 3.00 M NaCl and 4.00L of 1.50 M NaCl are mixed. assume there is no volume contraction upon mixing

(help me w/ this plzzzz T_T)

• ### dilution problems(help mee~~)?

HINT: calculate the total moles present and the total volume the molecules are dissolving in

calculate the final concentration if 2.00 L of 3.00 M NaCl and 4.00L of 1.50 M NaCl are mixed. assume there is no volume contraction upon mixing

(help me w/ this plzzzz T_T)