Mencionar 5 objetos o sustancias químicas que tengan Carbono.

Explain how a cell is like your school or town. What is the nucleus of your town? The mitochondria?

How many electrons are in the highest occupied barium

A chemist prepares a solution of iron (II) bromide FeBr2 by measuring out 0.55kg of iron (II) bromide into a 500. mL volumetric flask and filling the flask to the mark with water.

Why does each mineral have its own properties?

What is the main difference between the Schrödinger model and the Bohr atomic model?

If a farmer wants to increase the health of his crops, he could apply a nitrogen-based fertilizer. why is nitrogen important to plants?

A car battery produces electrical energy with the following chemical reaction. Pb + PbO2 + 2H2SO4; 2PbSO4 + 2H2O What is the mole ratio of PbO2 to water?

Which of the following is an example of the electrostatic force acting in a atom a. a neutron attracting a electron b. a neutron attracting a proton c. an electron attracting another electron d. a proton attracting an electron

When does water move between the surface of earth and the atmosphere

Why does water vapor exist naturally in the atmosphere