if 5.50 mol of calcium carbide (CaC 2) reacts with an excess of water, how many moles of acetylene (C 2 H 2), a gas used in welding, will be produced? CaC2 (s) + 2H2O (l) Ca (OH) 2 (aq) + C2H2 (g)

How many protons neutrons and electrons does neon have? neon atomic number is 10

Exhaled air contains 16% oxygen by volume. Assuming you exhale like the average person does during strenuous exercise (that is, you exhale 1L of air per breath and you exhale 40 breaths per minute) ad assuming the dive will take 90 minutes, what

4. In the chemical equation H202 (aq) → H2O (l) + O2 (g), the O2 is a O A reactant Bcatalyst C solid OD product

If you were working on a drug smuggling case, where are three places that you might look for illegal drugs?

If the body temperature of a person is recorded as 37°c, what is the person's body temperature in k? round your answer to the nearest whole number.

Amber has developed a line of organic lotions and handmade soaps with unique, herb-based scents and a touch of bee balm. She plans to sell these products to the wealthy residents of a nearby resort town.

Two pure elements react to form a compound. One element is an alkali metal, X, and the other element is a halogen, Z. Which of the following is the most valid scientific claim that can be made about the compound? a. It has the formula XZ2 b.

Are protons positive and neutrons neutral

Why might it be useful to determine the elements that a planet or moon is made up of?

Which of these is an example of a solution A Sand stirred in water B Sugar stirred in tea C A glass of water with ice in it D Oil and vinegar in a salad dressing jar