Oxygen has an atomic number of 8 and most commonly, a mass number of 16. thus, what is the atomic mass of an oxygen atom?

How many grams of acetic acid will be needed to prepare the 500 mL buffer? Note that the given concentration of acetate refers to the concentration of all acetate species in solution.

The following elements will most likely form ionic bonds: K and Ca; Sr and Ba; C and O; and Br and I?

When a teacher dilutes 50 mL of 2.0 M NaOH to 0.50 M, what volume of NaOH results?

What are found on the right side of the arrow in a chemical reaction

When you compare the DNA of two closely related organisms, would you expect their DNA to be more similar or less similar than the DNA of two distantly related organisms?

If the theoretical yield of the reaction below corresponds to 25.3 g and the percent yield of the reaction is known to be reproducibly 81.1%, calculate the actual yield. Given: Li2O + H2O → 2 LiOH

A 2.6 kg rat needs to be dosed w / insulin. dosage is 10mg insulin/kg body weight. Given that concentration is 90mg/ml, how many microliters needed to dose rat?

Which is a characteristic of colloids? are homogeneous mixtures have large dispersed particles will settle out over time are made up of at least two substances

4nh3+5o2-->4no+6h20 What is the total number of moles of h2o produced when 12 mole of nh3 is completely consumed?

Select the correct answer. Iron oxide reacts with aluminum to give aluminum oxide and iron. What kind of chemical reaction is this? Is The answer replacement