What is the gram formula mass of Na2CO3 x 10H2O

Which of the following describes the difference between nitrogen-14 and nitrogen-15? A. Nitrogen-14 has 14 electrons, 14 protons, and 14 neutrons; nitrogen-15 has 15 electrons, 15 protons, and 15 neutrons. B.

The diffrence between a glacier and a geyser

How many valence electrons does neutral atom of aluminum have

Brainiest if answered in the next 5m Why does carbon form covalent bonds? It has the ability to pull 4 electrons from another atom. It has the ability to release 4 electrons to another atom.

Which general trends in atomic radius and electronegativity are observed as the elements in period 3 are considered in order of increasing atomic number? atomic radius decreases and electronegativity increases.

The frequency of a given region of the electromagnetic spectrum is more than 3 x 1019 HZ. Note that the speed of light is 2.998 x 108 m/s. Which waves are found in this region? A. gamma rays B. visible light C. microwaves D. radio waves E. x-rays

Match the following: 1. C2H4 + Cl2 reaction 2. DDT interferes with this formation 3. benzene reacting with F2 4. by-product of substitution of alkanes and halogens HCI Substitution Addition Calcium

What is the molarity of a solution made with 298g of potassium chloride dissolved in enough water to make 2L of solution?

Why is mass conserved in a chemical change? The energy used in the chemical reaction burns up the extra matter. The compounds are still exactly the same, they just look different.

Where the use of energy is concerned (in scientific sense), when is work done?