A sealed flask contains 1.3 x 10^25 molecules of CO2. How many moles of CO2 are in the flask?

0.280 gram of koh will just neutralize what volume of 0.200 m h2so4?

Which component is an example of scientific law? A. All objects attract other. B. Radium is a radioactive element. C. What goes up always comes back down. D. Gravity is a dent in the fabric of space and time.

Builders and dentists must store plaster of Paris, CaSO4 x 1/2 H2O, in airtight containers to prevent it from absorbing water vapor from the air and changing to gypsum, CaSO4 x 2H2O How many liters of water vapor evolve when 2.

What is Bromine gas and what does it do?

What is a chemical equation that shows the same number of each kind of atom on both sides of the equation called? unbalanced balanced an incomplete reaction a replacement reaction

Correctly identify the generic formula for a synthesis reaction. a. AB + A+B b. A+B → AB c. CxHx + O2 → CO2 + H2O d. AB + C + AC + B e. AB + CD → AD + CB

Zinc phosphide, Zn3P2, is often used as a rat poison. Phosphorus has 5 valence electrons. How many valence electrons does each zinc atom lose?

Nonrenewable resources are?

Watch the animation, then check off the samples that will conduct electricity. Check all that apply. View Available Hint (s) Check all that apply. NaCl solution Solid NaCl Solid sugar Sugar solution

Burning wood represents a chemical change. True or False?