Which can associate a suspect and the firing of a gun?

(its not b)

A) markings on the gun's exterior

B) markings on the casing

C) markings on the bullet

D) powder residues

If a catalyst changes the activation energy of a forward reaction from 28.0 kcal/mol to 23.0 kcal/mol, what effect does it have on the reverse reaction?

What is the volume of an irregular object if the initial volume in the graduated cylinder is 3.50 ml and it rises to 7.50 ml after putting the object in water> 4.00 ml 11.00 ml 7.50 ml

What is the volume of one mole of any gass at STP?

What is the chemical name of the covalent compound P4O9? A. tetraphosphorus nonaoxygen B. tetraphosphate nonoxygen C. tetraphosphide nonaoxide D. tetraphosphorus nonoxide

How do power plants use nuclear fission to generate electricity? A. Fission creates new elements from which electricity can be generated. B. Fission releases energy in the form of electricity. C.

In an analysis of interhalogen reactivity, 0.440 mol of ICl was placed in a 5.00-L flask, where it decomposed at a high T: 2 ICl (g) ⇌ I2 (g) + Cl2 (g) Calculate the equilibrium concentrations of I2, Cl2, and ICl (Kc = 0.110 at this temperature).

Find the molar mass of vitamin A (C20H30O).

9.00 g/h to kilograms per minute

Determine an empirical formula from each set of percent composition data. 1. 18.27% K, 59.30% I, 22.43% 0

What are the controlled, independent, and dependent variables of this experiment? The experiment is to drop 2 drops of food coloring in one glass of hot water, and one of cold water to see which has the faster rate of diffusion.