Who proposed that the atom had a positivley charged nucleus as its center

The reaction described by H2 (g) + I2 (g) ⟶2HI (g) has an experimentally determined rate law of rate=k[H2][I2] Some proposed mechanisms for this reaction are: Mechanism A (1) H2 (g) + I2 (g) - →k12HI (g) (one-step reaction) Mechanism B (1) I2 (g) ⥫⥬=

Is cereal soup? Why or why not?

Which will cause and increase in the reaction rate between molecules? A. Molecules have strong internal bonding B. Molecules collide more frequently C. Electrons in the bonds remain in a meta-stable state D.

The chart seen here shows the decay of a sample of carbon-14 over a period of 33,000 years. What is the approximate half-life of carbon 14?

How many grams of barium hydroxide are required to dissolve in 156 g of water to make a 0.247M solution

When using a. csv file for Lookups, the first row in the file represents this?

If you were presented with 2l of a 2m sucrose stock solution, how many grams of sugar would be in a 100 ml aliquot?

1. What is something you might see a scientist doing?

Is fire living or non living

Which of these is used to find the estimated age range of a fossil?