The density of osmium, which is the densest metal, is 22.57 g/cm³. What is the mass of a block of osmium that measures 1.00 cm x 4.00 cm x 2.50 cm? Show your work. Be aware of significant figures!

A neutral atom has a mass number of 108 and in atomic number of 47 which atom is this? explain how you know. ^how many Protons electrons and neutrons are in this Atom.

What are the uses of Acetylene?

Why is asteroids a concern to earth?

An object has a density of 4.5kg/mL and a mass of 3.56kg. What is the volume of the object in ml?

How do you find out the average rate of reaction

The organisms living together in a community are interdependent upon one another. Look at the food web below. In which of the following ways is a puffin dependent upon salmon? A. Puffins have a commensalistic relationship with salmon. B.

2) Which of the following is a true statement? A: All the atoms of an element must be identical. B: Compounds may be separated by physical means. C: Mixtures may not be separated. D: Homogeneous is one type of compound.

How to tell the difference between ionic and covalent bonding?

The combustion of propane may be described by the chemical equation C3H8 (g) + 5O2 (g) ⟶3CO2 (g) + 4H2O (g) C3H8 (g) + 5O2 (g) ⟶3CO2 (g) + 4H2O (g) How many grams of O2 (g) O2 (g) are needed to completely burn 83.3 g C3H8 (g) ?

Was the relationship among temperature, heat, and thermal energy?