Which of the these is a balanced chemical equation? A) CO (g) + O2 (g) → CO2 (g) B) CO (g) + 2O2 (g) → 2CO2 (g) C) 2CO (g) + O2 (g) → 2CO2 (g) D) 2CO (g) + 2O2 (g) → 2CO2 (g)

The absorbance of a garbanzo bean solution that had been diluted by a factor of three was 0.528. what was the concentration of the iron in the original solution (before dilution) ?

Suppose you put equal amounts of pure water and salt water into separate ice cube trays of the same size and shape. What would expect to happen when you put both trays in the freezer? Explain.

Identify the examples of diffusion in the list below. check all that apply A) A teacher takes the cap off a permanent marker.

What is the central atom of C2H4Br2

The movement of particles from a less crowded area to a more crowded area requires what

Phosphorus forms a number of oxohalides, x3po, in which x may be a f, cl, or br atom. the most common of these, phosphoryl chloride, is obtained as follows:

Which statement is true about the speed of light waves in a medium? a. Depends on the temperature of the light wave b. Decreases with a decrease in density of medium c. Decreases with an increase in density of medium d.

What's a certain indicator that a molecule is polar? the molecule has a nonpolar covalent bond and the dipole is cancelled due to symmetrical arrangement of atoms the molecule has a polar covalent bond and the dipole is cancelled due to symmetrical

In the synthesis of barium carbonate from an alkali metal carbonate (M2CO3 where M is one of the alkali metals) a student generated 3.7 g of barium carbonate from 2.0 g of their alkali metal carbonate.

Give the state of matter that water is in as it moves through earths system