What is the amount of matter that makes up something

Hydrogen sulfide (H2S) can be produced by

A piece of unknown metal with mass 68.6 g is heated to an initial temperture of 100°C and dropped in 84 g of water (with an initial temperture of 22°C) in a calorimeter. The final temperture of the system is 52.1°C. The specific heat of water is 4.

A neutral atom of sulfur has the following characteristics: atomic number = 16 atomic mass = 32 Determine the value of this atom's electrons, protons, and neutrons in the space provided.

Could an organism survive without its mitochondria if all the other organelle were present

Write the symbolic notation of an isotope of an element having 8 protons, 8 electrons, and 9 neutrons

Using the kinetic theory what happens to oxygen particles as they are cooled

Identify the following: 1. The only 2 liquid elements. 2. The element in period 4, group 0. 3. The second metalloid in period 4. 4. The first element in group 4A.

You are about to open a container of soy milk but notice that there are instructions to "shake well before serving." the soy milk is most likely a

Give reason: a. Fractionating columns with beads are used for fractional distillation b. Crystallisation is a better technique than evaporation

How can a gardener remedy soil that is overly acidic?