How are microwaves produced?

Question 1 Write the next three numbers in the sequence 2, 10, 50, 250,-

What mass of hydrogen will be produced by the reaction of 67.3 g of tin with excess water according to the following reaction?

How much heat is absorbed/released when 20.00 g of NH3 (g) (17.0307g/mol) react in the presence of excess O2 (g) to produce NO (g) and H2O (l) according to the following chemical equation? 4 NH3 (g) + 5 O2 (g) → 4 NO (g) + 6 H2O (l) ΔH° = 1168 kJ

A chemistry student needs 75.0ml of pentane for an experiment. by consulting the crc handbook of chemistry and physics, the student discovers that the density of pentane is 0.626·gcm-3. calculate the mass of pentane the student should weigh out.

Using the relationship given in part 1, calculate Ecell if [Cu2+] = 1.453 M and [Cr3+] = 0.00176 M, assuming that the temperature remains at 25°C. Give your answer to two places after the decimal.

Which gas sample at STP has the same total number of molecules as 2.0 liters of CO2 (g) at STP

Benzene contains only carbon and hydrogen and has a molar mass of 78.1 g/mol. Analysis shows the compound to be 7.44% hydrogen by mass. Find the empirical and molecular Formula of benzene.

What is the Lewis structures for Ca (OH) 2

Compare and contrast homogeneous and heterogeneous mixtures using key terminology, and provide at least three examples of each. For example, explain what the mixture is comprised of and what makes it homogeneous or heterogeneous.

Which element would most likely have chemical properties similar to that of fluorine (F) ?