Which scenario best describes a chemical change?

A. water conducting electricity

B. copper pipe being cut into pieces

C. copper corroding in the presence of oxygen

D. water freezing into ice

if you combine 390.0 mL of water at 25.00 °C and 110.0 mL of water at 95.00 °C, what is the final temperature of the mixture? use 1.00 g/mL as the density of water.

How many moles of MgCL2 are there in 311 g of the compound

Which of the following systems has the highest entropy? A cup of ice at 0 degrees C A cup of water at 50 degrees C A cup of water at 0 degrees C A cup of ice at - 15 degrees C Which of the following systems has the lowest entropy?

How many joules are produced when 45 gram of copper is placed into water that releases them temperature from 12c to 71c (c) = 0.75j/g*c

Explain why a sewing needle can float on the surface of water in a glass

How many atoms are there in 2.3 grams of H?

Which of the following would dissolve in water, and why? None of these substances would dissolve in water Candle wax, it is a nonpolar substance Motor oil, its primary IMF is London Dispersion Forces Acetic acid, it ionizes into ions when added to

Have a region surrounding the central area called

1. Simplify. | A. O 16 B. O C. 04 D. O

What is the (H+), if the pH of a solution is 3.20?