Chemistry, 18.01.2021 09:20, lacourboud20005
There are three isotopes of X element (X):
X-17 isotope: atomic mass17.2 amu, abundance:78.99%
X-18isotope: atomic mass 18.1 amu, abundance 10.00%
X-19isotope: atomic mass:19.1 amu, abundance: 11.01%
Calculate the average atomic mass of X.
Answers: 3
Chemistry, 22.06.2019 07:00, maryjane8872
Which set of characteristics best describes igneous rock? a) largest type of rock, made of organic matter, hardest type of rock b) least abundant type of rock, made of other rocks, made mostly of minerals c) found on all continents, contains wavy bands of stripes, contains fossils d) most abundant type in earth's crust, made of magma/lava, contains no fossils
Answers: 1
Chemistry, 22.06.2019 14:30, davidrodriguez122001
Which of the following describes a situation where competition between producers exists
Answers: 1
There are three isotopes of X element (X):
X-17 isotope: atomic mass17.2 amu, abundance:78.99%
Mathematics, 14.01.2020 18:31