Which of the following atoms has four valence electrons? beryllium (Be) carbon (C) titanium (Ti) potassium (K)

What is a pure substance that cannot be chemically broken down into simpler substances?

What is the pH of a solution that is 0.10 M formic acid and 0.0065 M formate (the conjugate base) ? Ka of formic acid = 1.77 x 10-4

If a pill has a mass of 0.005g, what is the pills mass using scientific notation?

Is a glass of ice water a pure substance or a mixture?

If cells in the process of dividing are subjected to colchicine, a drug that interferes with the formation of the spindle apparatus, at which stage will mitosis be arrested?

For the baeyer-villiger oxidation of cyclohexyl methyl ketone

What will happen if the density of an object is less than the density of water?

Which cannot be separated into simpler substances? compound element solution mixture

What jobs involve chesmistry

Think about a neutral magnesium atom. Then think of a magnesium ion with a 2+charge. How are these two alike? How are they different? Be sure to use the terms proton, neutron, and electron in your answer.