Acetylene gas (C2H2) reacts with oxygen to produce carbon dioxide and water. When 30.0 g of acetylene is reacted with O2, 18.5 g of water is formed.

2 C_H, (g) + 3 02 (g) → 2 CO2 (g) + 2 H20 (1)

a) What type of reaction is this?

b) What is the percent yield of this reaction?

Hannah is writing a report on how albedo affects the global climate. she’s proofreading her passage for any factual errors. which sentence must hannah correct before submitting her report? earth receives energy from the sun. this energy drives many of the processes on earth, including its climate. some part of this energy is reflected by earth’s surface. we use the term albedo to describe the reflected energy. albedo of an object is the ratio of the reflected radiation to the total radiation reaching the object. a value of 0 means no energy is absorbed by the object, whereas a value of 1 means that all of the energy is absorbed. in this way, the albedo of an object can influence earth’s atmospheric temperature.

Which of the following would have less momentum than a 52 kg cheetah running at 10 m/s?

Covalent bonds generally form when the bonded elements have a difference in electronegativity less than 1.5. subtract the electronegativities for the following pairs of elements and predict whether they form a covalent bond. electronegativity difference of c and c: ionic covalent electronegativity difference of mg and cl: ionic covalent