11 A sample of CO2 (s) and a sample of CO2 (g) differ in their

(1) chemical compositions

(2) empirical formulas

(3) molecular structures

(4) physical properties

A car travels 150 meters in 3.5 seconds what is its speed?

How is radiation related to electromagnetic waves and thermal energy?

Briefly discuss interpretations of your observations and results. Include in your discussion, any conclusions drawn from the results and any sources of error in the experiment.

Express each of the following numbers in scientific notation with correct significant figures: (a) 711.0 (b) 0.239 (c) 90743 (d) 134.2 (e) 0.05499 (f) 10000.0 (g) 0.000000738592

How many ml of naoh are needed to neutralize 15.0 ml of 0.350m ch3cooh?

Which statement describes how the binary ionic compound CaCl2 is named? The nonmetal is named first, and the ending is replaced with - ide. The metal is named first, and the ending is replaced with - ide.

Calculate the empirical for the molecular formula mass and the molar mass of each of the following minerals: (a) Limestone, CaCO3 (b) halite, NaCl (c) beryl, Be3Al2Si6O18 (d) malachite, Cu2 (OH) 2CO3 (e) turquoise, CuAl6 (PO4) 4 (OH) 8 (H2O) 4

How is a suspension different from a colloid?

What is the atomic number of 232Th

A particular voltaic cell operates with the reaction: Zn (s) + Cl2 (g) - -->Zn^2 + (aq) + 2Cl^ - (aq) giving a cell potential of. 853 V. Calculate the amount of energy liberated from the cell when 20.0g of zinc metal is consumed?