Of the rock's original uranium-235 remains. how old is the rock

What is the difference between a repetition and replication

What are the coefficients for the following reaction when it is properly balanced?? potassium iodide + ? lead (II) acetate lead (II) iodide + -potassium acetate 3,2,2,1 1,1,2,2 none of these

The nucleus of an atom contains at least one proton. True or false

Why do elements in a vertical column of the periodic table have similar chemical properties? They have the same number of outer electrons. They have equal numbers of protons and electrons.

What is the mass in grams of 28.76ml of acetone

How many moles of lithium are in 83 grams of lithium?

Ocean constitutes most of ___ of water a) Evaporation b) Precipitation c) Condensation d) Transpiration e) Sublimation Don't choose a random letter.

In the reaction, Zn + HCl-> ZnCl2 + H2, 25 grams Zn are reacted with 17.5 grams HCl. How many grams of H2 will be produced? A. 0.382 g of H2 B. 0.479 g of H2 C. 0.7865 g of H2 D. 0.484 g of H2

Is nail varnish soluble?

What is the periodic trend for atomic size from top and bottom in a group? From left to right in a period?