Why don't we use meters or miles when discussion distances between stars or galaxies?

A gold nugget has a volume of 4.35cm and a mass of 84.96g. What is its density?

How would you balance this equation HCL + Ba > BaCL2 + H2

If a catalyst is used in a reaction: A. the equilibrium shifts. B. the reaction rate does not change. C. the energy of activation increases. D. the reaction rate increases.

Explain the color changes of bromothymol blue during sn1 solvolysis of tert-butyl bromide, upon addition of koh (describe how the color changes and why).

How many moles of CO2 are produced from the combustion of 6.40 mol c2h8?

Write an equation for the reaction of hydrogen chloride and sodium sulfide to produce hydrogen sulfide with sodium chloride. 1. Show the formulas of the reactants 2. Show the formulas of the products. 3. Write the balanced equation for this reaction

Martha has a large amount of 1.25 M H2SO4 in her lab. She needs 36 grams of H2SO4 for a chemical reaction she wants to perform. How many liters of solution should she use?

A student makes observations when water is added to a blue solution of copper sulfate. The student makes only 1 observation: the solution changes to a lighter shade of blue. Is this an example of a chemical reaction? Explain your reasoning.

When dos the spring tide occur

As ice transforms into steam, Question options: new molecules are formed. the types of atoms are changed. energy is absorbed by the molecules. the mass of the molecules is increased.