Which element is magnetic?

calcium

chromium

carbon

cobalt

How many moles of potassium oxide (K2O) will be formed when 1.52 moles of potassium reacts with oxygen according to the following reaction : 4 k + O2 = k2O

Which planet contains high levels of carbon dioxide in its atmosphere resulting in a runaway greenhouse effect

1.86 g H2 is allowed to react with 9.75 g N2, producing 2.87g NH3. A. What is the theoretical yield in grams for this reaction under the given conditions? B. What is the percent yield for this reaction under the given conditions?

Which is the number of moles of carbon dioxide produced from the complete combustion of 5.2 moles of ethanol? C2H6O + O2 CO2 + H2O A. 5.42 moles B. 2.71 moles C. 10.84 moles D. 16.3 moles

What are some signs that a chemical change takes place when a firework explodes? Matter is destroyed Light is produced Heat is produced The chemical composition is not changed

Change 5.20 moles of c3h6o2to grams

What factors can make atoms unstable

Nitrogen (N), oxygen (O), chlorine (Cl), neon (Ne), and argon (Ar) are all elements that occur as a gas at room temperature (20°C). Using the periodic table, which pair of gases has the most similar properties?

what will be the new volume of a 250mL sample of gas at 300 k and 1 atm if heated to 350 k at 1 atm law use:

Which statement describes the chemical property of oxygen