A 75g smaple of Argon has a half-life of 25 minutes, how much will remain after 100 minutes
What is 18.75 g?
100
what state of matter is the element krypton
What is gas?
100
name a property of a covalent bond
What is covalent bonds share electrons?
100
what are the 3 steps in converting moles to grams
What is 1. determine how many moles are given in the problem. 2. calculate the molar mass of the substance. 3. multiply step one by step two?
100
how do you find an element's atomic number
What is the number of protons in the nucleus of an atom determines an element's atomic number?
200
a 80g sample of Xenon has a half-life of 18.75 minutes, how much will remain after 75 minutes
What is 20g?
200
how many total gases are on the periodic table
What is 11?
200
how do covalent bonds differ from ionic bonds
What is these two opposite ions attract each other and forms the ionic bond. covalent bonding is a form of chemical bonding between two non metallic atoms which is characterized by the sharing of pairs of electrons between atoms and other covalent bonds?
200
how many grams are in 2.3 mol of HCl
What is 36.45g
200
how do you find an element's atomic number
What is calculating the number of proton, neurons, and electrons?
300
the half-life of palladium-103 is 17 days. how much of a sample (initially 100%) would remain after 51 days
What is 12.5%
300
how many states of matter does the periodic table contain
What is 3?
300
name a property of an ionic bond
What is ionic bonds transfer electrons?
300
what is the number known as Avogadro's number
What is 6.02x10^23?
300
has an atomic number of 16
What is oxygen?
400
sodium-24 has a half-life of 15 hrs. how much will remain in an 18.0 g sample after 60 hrs
What is 1.125 g?
400
assumes the shape of the part of the container which it occupies,not easily compressible, flows easily
What is liquid?
400
what is an ionic bond
What is a type of chemical bond that involves a metal and a nonmetal ion or poly-atomic ions such as ammonium through electrostatic attraction. In short, it is a bond formed by the attraction between two oppositely charged ions?
400
how many grams are in 1 mol of NaCl
What is 58g?
400
has an atomic number of 40
What is potassium?
500
a sample of radon-222 has a half-life of 3.8 days. what percentage of the original amount remains after 15.2 days
What is 6.25%
500
assumes the shape and volume of its container,compressible, flows easily