How are chemical and physical changes alike?

Starting from a 1 M stock of NaCl, how will you make 50 ml of 0.15 M NaCl?

When the energy of a sound wave is transferred to a particle of a medium and causes it to vibrate and generate heat the sound wave is

What is the molar mass of Na2Cr2O7?

The net charge on a sulfide ion (s2-) explain how this ion obtains its charge your answer should include a discusion of subatomic particles

A 500 mg of oxalic acid (H2C2O4) dissolved in water and titrated with 17.98ml of 0.0600M potassium hydroxide solution. What is the approximate number of mmol of oxalic acid?

We are all familiar with the general principles of operation of an internal combustion engine: the combustion of fuel drives out the piston.

A first order reaction has a rate constant of 0.816 at 25 oC. Given that the activation energy is 22.7 kJ/mol, calculate the rate constant at 34 oC. (enter answer to 3 decimal places)

Part b select the ester that is formed when propanoic acid reacts with isopropyl alcohol in the presence of heat and an acid catalyst.

Do metals form anions or cations

Which of the following gases in Earth's atmosphere would you expect to find as molecules and which as individual atoms? a. Nitrogen b. Oxygen c. Argon