Which is an example of a chemical change?
a) mixing of poster colors
b) formation of clouds
c) metal corroding in salt water
d) sugar dissolving in water
e) separating salt from seawater

What is the pressure of 0.500 moles of carbon dioxide gas in a 2.5 l tank and at a temperature of 301 k? (r=0.0821 l·atm/mol·k) 3.08 atm 1.2 atm 0.23 atm 4.01 atm 4.94 atm

How many moles of co2 are produced during the complete combustion of 3.6 moles of c2h6

Achemist who studies water samples did a demonstration of how to test for lead in water. she added a clear solution of potassium iodide to a clear solution of lead nitrate. then a yellow swirling solid formed in the liquid. what is most likely true about the yellow solid?