the atomic nubmer of an element is the total number of which particles in the nucleus? protons, neutrons, electrons, protons and electrons

Which organism is a tertiary consumer? clownfish brittle star killer whale octopus

What mass (in g) of KIO3 is needed to prepare 50.0 mL of 0.20 M KIO3? b) What volume (in mL) of 0.15 m H2SO4 is needed to prepare 50.0 mL of 0.080 M H2SO4?

How to test a hypothesis using scientific inquiry?

Epsom salts (magnesium sulfate) have a solubility of 26.2 grams. If you dissolved 26.0 grams of Epsom salts in 100 g of water at 20 degrees Celsius, what type of solution would this be?

As the concentration of hydrogen ions in solution increases, what happens to the pH? 1. Fluctuates up and down 2. stays the same 3. decreases 4. increases

What is the main difference between a longitudinal wave and a transverse wave?

How many moles of methane (CH4) are in 7.31*10/25 molecules

What starting matirials do cells need for cellular respiration

What is the velocity of a wave with a frequency of 77 Hz and a wavelength of 200 m?

For the reaction: n2 (g) + 3h2 (g) ⇔ 2nh3 (g), at a particular temperature, the concentrations of n2, h2 and nh3 are 2.1 x 10-3 m, 3.2 x 10-2 m, and 1.8 x 10-1 m, respectively. calculate a value of k for this reaction