What is a property of a combustion reaction?

A. Oxygen gas, O2, is a reactant.

B. The products are simpler than the reactants.

C. The reactants are simpler than the products.

D. An uncombined element is on the reactant and product side.

When traveling from oxygen to sulfur to selenium, through this group in the periodic table, what is changing?

Two characteristics used to classify igneous rocks are texture and

What is the sign of △S for each of the following processes? I. The separation of gaseous molecules of UF6, into 238UF6 and 235UF6 at constant temperature and pressure. II. The dissolving of I2 (s) in CCl4 (l).

A chemist prepares a solution of aluminum sulfate (Al2 (SO4) by weighing out 116.0 g of aluminum sulfate into a 450.

Quien inventó la electricidad

Name 3 long chains of sugar?

The compressed gas in a sealed container has a gauge pressure of 185.4 kilopascals. If the air around the container is at standard pressure, what is the absolute pressure inside the container? A. 84.1 kPa B. 143.4 kPa C. 184.4 kPa D. 186.4 kPa E.

A 6.22-kg piece of copper metal is heated from 20.5 °C to 324.3 °C. The specific heat of Cu is 0.385 Jg-1°C-1. a. Calculate the heat absorbed (in kJ) by the metal. b.

Milk Sours. Physical Change? Chemical Change? Both?

Unstable isotopes occur when the strong force is unable to overcome the