Adding food color to water causes a color change. is this evidence of a chemical reaction? explain

In the chemical reaction below, calcium (ca) and water (h2o) react to form calcium hydroxide (ca (oh) 2) and hydrogen gas (h2). ca (s) 2h2o (l) → ca (oh) 2 (aq) h2 ( g.

What state is SnCl4 at room temperature?

How Do I Draw 4 Methane Molecules?

A chemical reference book says that substance x is not soluble in water

What orbits from a pi bond

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

Empirical formula for 6. 63.52% Fe, 36.48% S

Name the term used for the configuration of a stereoisomer having R groups whose positions alternate from one side to the other side along the backbone chain.

Under the Implied Consent law, which of the following is true? A. Your driving privileges will be suspended if you refuse a chemical test to measure your alcohol level. B.

If 0.366 g of hydrogen is obtained in this experiment, how many grams of sulfur must be obtained