The speed of light is used to determine the length of a light-year. About how far does light travel in one second? A. 30 km B. 3,000 km C. 30,000 km D. 300,000 km

A 15.00g solid mixture containing Ca (OH) 2, among other non-basic components, was neutralized with 0.2000g of HCl. What was the mass percentage of Ca (OH) 2 in the mixture? Round your answer to four significant figures

The half-life of radium-226 is 1620 years. Knowing this, you can determine the percentage of an original sample of Ra-226 that will remain after 4860 years have passed. This percent is?

The rate law for a hypothetical reaction is rate=k[A][B]. If the concentration of A and B are both 0.020 miles per liter and k = 1.3x10-1M-1s-1, what is the reaction rate

When most large food molecules are heated, they: A. boil B. melt C. bond with each other D. form entirely different molecules

A scientist finds an organism that cannot move. It has many cells and get food from its environment. In which Kingdom does it

What are the characteristics of bones?

If 294 grams of FeS2 is allowed ti react with 176 grams of O2 according to the following equation how many grams of Fe2O3 are produced? FeS2 + O2 = Fe2O3 + SO2

Convert 3.57 moles of aluminum to grams

An average microwave uses a frequency of 2.54 GHz. How much energy is emitted?

Why scientist form a hypothesis