Which of these is an indicator that a chemical reaction has occurred?

precipitate forms

temperature remains the same

color is diluted

mass increases

when methanol, ch3oh, is dissolve in water, a nonconducting solution reslults. when acetic acid, ch3cooh, diisolves in water, the solution is weakly conductng and acidic in nature.

How Many Atoms Are In 356.13 Grams Of Sn

Discuss the kinetics or freezing and solid formation by crystallization

A car slides on ice and runs into a tree, causing the front of the car to become slightly hotter and crumpled. The car and ice are the system. Describe the energy changes in the system.

A jar contains a certain substance. Which observation would show that the substance must be either a solid or a liquid? A. The substance has both mass and volume. B. The particles of the substance are widely separated from each other. C.

Given the following information, calculate the mass for B-11. B-10 has a natural abundance of 19.9 percent, while B-11 has a natural abundance of 80.1 percent. The mass of B-10 is 10.013 amu.

How many moles of oxygen react with 0.23 moles of NH3

How many moles of carbon do you have in 100 quadrillion carbon atoms? report answer to 2 sig figs

A small 15 kilogram canoe is floating downriver at a speed of 4 m/s. What is the canoe's kinetic energy?

Liquid water is heated until it boils and becomes water gas. Which statement is true about the water?