Which is not a compound?

A. carbon dioxide gas

B. oxygen gas

C. water

D. silicon dioxide

Element X reacts with hydrogen gas at 200°C to form compound Y. When Y is heated to a higher temperature, it decomposes to the element X and hydrogen gas in the ratio of 559 mL of H2 (measured at standard temperature and pressure) for 1.

What would the products of a double-replacement reaction between ca3n2 and al2o3 be?

You are provided with 6.05 g S O 2 to react with 2.23 g O 2. Indicate your theoretical yield.

Which orbitals form a pi bond?

Gas A effuses 0.68 times as fast as Gas B. If the molar mass of Gas B is 17 g, what is the mass of Gas A?

A method of farming that disturbs the soil and its plant cover as the responsible is called

Which of these would have a frequency greater than an X-ray A UV ray B violet light C microwave D gamma ray

What is true about exothermic reactions? A. More heat is given off than is put into the reaction. B Energy from an outside source is continuously being added. C. The reaction container always feels cold. D.

What are the three fundamentals particles of an atom

A temperature of 37°C is equivalent to a temperature of (1) 98.6 K (3) 310. K (2) 236 K (4) 371 K