Please help! Will make brainliest!! The momentum of 0.50 Cal projectile is _ Kgm/s. (Use 1 decimal place)

The momentum of 9mm Cal projectile is _ Kgm/s. (Use 1 decimal place)

The first-order reaction a→2b+c has rate constant 0.538 s−1. if the initial concentration of a is 0.867 mol l−1, what is the half-life of the reaction in seconds? remember to use correct significant figures in your answer (round your answer to the nearest hundredth). do not include units in your response.

Which statement best explains why the overall charge on an atom is zero?

Examine the drawing of a molecule. each ring represents an atom of nitrogen (n). what’s the chemical formula of this substance?