The periodic table includes all of the known elements in the world. How are elements arranged on the periodic table?

A.

by the number of neutrons found in the element

B.

by the element's name

C.

by their atomic number

D.

by their atomic mass

Consider the reaction of zn metal with hydrochloric acid: zn (s) + 2hcl (aq) → zncl2 (aq) + h2 (g) if 7.50 g of zn is reacted with 0.225 moles of hcl in a 2.00 l container what pressure does the generated h2 exert against the container walls at 25.

In some fireworks there is a reaction between powdered aluminium and powdered barium nitrate in which heat is evolved and an unreactive gas is produced. What is the equation for this reaction? A. 2Al + Ba (NO3) 2 - > Al2O3 + BaO + 2NO B.

Water has a large K, value. True False

Which trait will an organism that receives one dominant gene and one recessive gene most likely have?

What is the percent of MgSO4 in magnesium sulfate heptahydrate? 48.83 % 51.17 % 95.43 % 86.98 %

If the density of Cu is 8.96g/cm cubed, what is the volume of 28kg of Cu?

A piece of iron can change in different ways. How is iron bending different from iron rusting?

Which organism would least likely be selectively bred A) Dandelions B) Nantes Carrots C) Belgian Blue Cattle D) Hypoallergenic Cats

You are given a clear solution of KNO3. Using 3-4 sentences explain how you would determine if the solution is unsaturated, saturated, or supersaturated

Which element combination (s) would result in electrons being shared? [] sodium (Na) and oxygen (O) [] carbon (C) and fluorine (F) [] oxygen (O) and hydrogen (H) [] aluminum (Al) and chlorine (Cl)