When you add food coloring to water, is a chemical or physical change?

Which statement is true? A reaction in which the entropy of the system increases can be spontaneous only if it is exothermic. A reaction in which the entropy of the system decreases can be spontaneous only if it is exothermic.

Sulfur has an atomic number of 16. What is the electron configuration for an electronically neutral atom of sulfur? Question 1 options: 1 s 22 s 22 p 63 s 23 p 3 1 s 22 s 22 p 63 s 23 p 4 1 s 22 s 22 p 63 s 23 p 6 1 s 22 s 22 p 63 s 23 p 5

How are sound waves and EM waves alike? How are they different?

A selectively permeable membrane separates solution a and b. the concentration of water molecules in solution b is higher than in solution a. describe how the water molecules will work

You find a compound composed only of element "X" and hydrogen, and know that it is 91.26% element X by mass. Each molecule has 2.67 times as many H atoms as X atoms. What is element X?

If a compound has a molar mass of 180 g/mol and its empirical formula is CH20, what is its molecular formula? CH20 C₂H4O2 C6H1206 C12H22011

Which element has six energy levels? A) rubidium (Rb) B) cesium (Cs) C) potassium (K) D) sodium (Na)

What is a segment of dna that contains a single unit of information?

Is carbon monoxide covalent or ionic?

Do all organisms perform meiosis?