1. You put an unknown substance into a graduated cylinder filled with 60 ml of water. After the substance is submerged, the water level rises to 90 ml, Then,
you measure the mass of your substance. The mass is 25 g. What is the density
of the substance?

Often on a topographic map, every fifth contour line is darkened. what is this line called? a. key b.slope c.benchmark d. index contour

If you have 5.25 grams of methane (ch4), how many grams of co2 will you produce ?

Identify one disadvantage to each of the following models of electron configuration: -dot structures -arrow and line diagrams -written electron configurations type in your answer below. (answer) -dot structures do not show the distribution of electrons in orbitals and take up a lot of space. -arrow and line diagrams take up a lot of space and make it difficult to count electrons. -written configurations make it easy to lose count of electrons and do not show the distribution of electrons in orbitals.