A certain metal alloy is composed of 10% tin, 16% antimony, and 74% lead. If you were to have 500 g of the alloy, how many grams of antimony would be found in this sample?

a. 370g

b. 50g

c. 80g

d. 16g

How many moles of NaOH are in 25ml of. 1M NaOH?

Which statement correctly describes what happens when water turns to steam in terms of energy? A. the water absorbs energy which causes chemical bonds to break, changing water to steam. B.

Hy did dr. tyson decide to exclude pluto from the exhibits of planets

What value was a mole originally based upon?

Acetylene C2H2 gas is often used in welding torches because of the very high heat produced when it reacts with oxygen O2 gas, producing carbon dioxide gas and water vapor. Calculate the moles of oxygen needed to produce 1.5mol of water.

The electron configuration for an atom is 1s22s22p2. How many electrons does the atom have? 4 2 6 5

When a piece of sodium carbonate reacts with dilute HCl, a gas X is produced. When gas X is passed through lime water then the solution turns milky and a white precipitate Y is formed a. Write the chemical formula of X, Y and (3) b.

Would precipitation occur when 500 mL of a 0.02M solution of AgNO3 is mixed with 500 mL of a 0.001M solution of NaCl? Show your work.

What compound is always part of an aqueous solution?

How did scientists carry out research before and after the scientific revolution?