Determine the best formula for reacting elements.

calcium and iodine

A. Cal

B. Cal2

C. Ca2l

D. Ca2l2

If the volume and temperature are kept constant, and nothing is added to the reaction mixture, what happens to the total pressure during the course of the reaction?

Answer the following and round to the correct number of significant figures (don't forget units). a) 0.02123 m + 1.12 m + 0.00123 m = b) 2.3 cm - 1.23 cm + 120 cm = c) 25,430 km - 3,500 km + 200 km = d) (1.21 x 105) x (2.6 x 103) = e) 7.13 mm x 9.

You want to remove as much CO2 gas as possible from a water solution. Which of the following treatments would? a. cool the solution b. filter the solution c. boil the solution d. aerate the solution

580 grams of boiling water (temperature 100°C, specific heat capacity 4.2 J/K/gram) are poured into an aluminum pan whose mass is 900 grams and initial temperature 24°C (the specific heat capacity of aluminum is 0.9 J/K/gram).

Formula for distance

What compares a law and a theory?

Explain what domain would best be represented by the "?" in the diagram. A) Eukarya because the organisms are all eukaryotic. B) Eukarya because the organisms are all prokaryotic. C) Bacteria because some of the organisms are autotrophs.

If you are eating a hamburger, it is an example of a consumer eating another consumer. a) true b) false

What mass of NaNO3 is needed to make 3.5 L of 2.2 M solution? (Na = 23.0g, N=14.0g, O=16.0g) Explain in steps

In which group do all atoms have seven valence electrons in the ground state?