A rectangular block of copper has a mass of 143.584 g and measures 5.05 cm by 2.55 cm by 1.25 cm. Find the density of the copper block.

What force holds together the ions in a salt?

What is the reaction rate for a chemical reaction?

How long has there been life on Earth? 4.6 billion years 3.7 billion years 65 million years 3 million years

Under certain conditions, neon (Ne) gas diffuses at a rate of 7.0 centimeters per second. Under the same conditions, an unknown gas diffuses at a rate of 4.9 centimeters per second. What is the approximate molar mass of the unknown gas?

four students measured the mass of a piece of metal whose accurate mass is 34.75g. their result are 34.2g, 33.75g, 35.0g and 34.69g. what is the best estimate for the mass of the piece of metal? and why?

When would maintaining high proteinase inhibitor concentrations in plant tissues be problematic?

What is Lithium and how does it appear in its pure state?

What are the 2 types of high explosives?

Cultivated soil is commonly missing Nitrogen Oxygen Carbon Calcium

Short, hairlike appendage