He accepted value for the density of liquid mercury is 13.5336 g/mL. Four scientists measure the density of liquid mercury in their individual laboratories. The most accurate measurement is made by

The density of HCN (hydrogen cyanide) gas at STP is 1.21g/L. What volume will 100.0g of HCN occupy at STP? A) 121 L B) 0.012 L C) 82.6 L D) none of the above

How many electrons are there in the valence shell of the oxygen atom of water? O a. 2 O 6.4 OC. 6 O d. 8

Why does a salt compound give off light (or a colored flame) when burned? 4. did lithium chloride and sodium chloride give off similar colors? why or why not? 5. explain what you think causes different compounds to give off different flame colors. 6.

Why is it do rare to experience a total solar eclipse?

What force of attraction does the second energy level of a phosphorus atom feel from the nucleus?

Balance the equation _H2O2->_H2O+_O2

A balanced chemical reaction obeys the law of ... A) ideal gases. B) definite proportions. C) conservation of matter. D) conservation of energy.

What is the net ionic equation for the reaction between nickle (II) chloride and silver (I) nitrate?

What is the velocity of a wave with a wavelength of 0.03 m and a frequency of 120 Hz?

What is the gram atomic mass of sodium?