What is the mass of a sample of O2 gas, which has a pressure of 740 mmhg at a temperature of 25 degrees Celsius in a volume of 250 mL

Which of the following describes how matter moves between producers, consumers, and decomposers in an ecosystem. A) One-way flow from producers to consumers to decomposers. B) One-way flow from decomposers to consumers to producers.

Sterling silver contains silver and copper metals. If a sterling silver chain contains 33.3 g of silver and 2.70 g of copper, what is the percent of silver

What disease involves a crustacean as a vector

Calculate the specific heat for as air if 1500.0 joules are required to raise the temperature of 50.0g from 0.0c to 40.0c

How is milk souring a chemical change?

What conversion factor would you use to find the number of moles in 3.52x10^24 molecules

the solubility in mol/dm3 of 20.2g of potassium trioxonitrate (V) dissolved in 100g of water at room temperature is

Which process occurs at the anode in an electrochemical cell? (1) the loss of protons (2) the loss of electrons (3) the gain of protons (4) the gain of electrons

What is natural transmutation?

An electron in a sodium atom gains enough energy to move from the second shell to the third the sodium atom becomes