A package of candy contains two servings. Each serving contains 140 food calories. Convert this to joules if you were to eat both servings.

Como se distribuyen los elementos en la tabla periodica

If an element has three isotopes with known masses, what other information is needed to find the average atomic mass of the element

The cooling of a refrigerator happens because of the heat flow towards the cooler object. Therefore, the heat flows into the refrigerant. This is as expected according to what law?

Energy flows into an ecosystem in the form of energy and exits in the form of

When hydrogen sulfide gas is bubbled into a solution of sodium hydroxide, the reaction forms sodium sulfide and water. how many grams of sodium sulfide are formed if 1.5 g of hydrogen?

What is the volume of 0.05 mol of neon gas at STP?

Which is NOT a property of gold? A. rare B. tarnishes C. malleable D. corrosion resistant

The element rubidium has two naturally occurring isotopes. The atomic mass of 85Rb (72.17 percent abundant) is 84.911794 amu. Determine the atomic mass of 87Rb (27.83 percent abundant). The average atomic mass of Rb is 85.4678 amu.

Describe what you can do to slow down, or stop the continuous negative human treatment of our aquatic biomes.

If the hydrogen ion concentration is 10-7M, what is the pH of the solution? Show all work.