If the average speed of a helium atom at a certain temperature is 1220 m/s, what is the speed in miles per hour? (1 mi = 1609 m)

35.5 moles of lithium fluoride is dissolved in 65 L of solution

2 Mg (s) + O2 (g) → 2 MgO (s) ΔH = - 1204 kJ Determine which statement is true regarding the reaction above. A) The reaction is endothermic; the products have a lower total bond energy than the reactants.

Name one way in which oxygen from the air reacts slowly with another materal

What is kinetic i ned to know for scince i just stared

Consider the chemical equation. CuCl2 + 2NaNO3 Cu (NO3) 2 + 2NaCl What is the percent yield of NaCl if 31.0 g of CuCl2 reacts with excess NaNO3 to produce 21.2 g of NaCl? Use.

A flask contains 4.4g of carbon dioxide gas. calculate how many moles CO2 gas does it contains?

What defines a mixture? A) A mixture contains different substances that are chemically combined. B) A mixture contains different substances that are not chemically combined and can be broken down into its basic substances through physical means.

How much does 5 gallons of water weigh?

Calculate the percent by mass sulfur in sulfuric acid, h2so4.

4. What electrons are involved in chemical bonding?