Which property of a substance is not altered by a physical change?

2C6H14 + 19O2 → 12CO2 + 14H2O How many atoms, total, are reacting in this equation?

A 2.50 L flask was used to collect a 1.65 g sample of propane gas,. After the sample was collected, the gas pressure was found to be 736 mmHg. What was the temperature of the propane in the flask

Carbon forms the backbone of every major type of biological molecule, including carbohydrates, fats, proteins, and nucleic acids. how does carbon's high valence relate to its ability to form these large and complex biomolecules?

Which of the followings is true about G0'? A. G0' can be determined using Keq' B. G0' indicates if a reaction can occur under non-standard conditions C. G0' is always positive D. G0' is determined at pH 7 and temperature 298 K

How is the molar mass of an element different from the atomic mass of an element?

How many moles of oxygen are formed when 58.6 g of KNO3 decomposes according to the following reaction? 4 KNO3 (s) → 2 K2O (s) + 2 N2 (g) + 5 O2 (g)

What was the ratio in the formula for iron (II) oxide

2C18H38 + 5502 → 36CO2 + 38H2O

What is the opposite of osmosis

Acid rain most often damages stone architecture by causing