The thermodynamic law that explains the movement of heat energy during the refrigeration cycle is the first/zeroth/second.

What determines the texture of igneous rocks? (6 grade science)

How many lone pairs does a trigonal-planar have?

What is one of the primary unanswered questions about the origin of the universe? What type of elements formed first? Approximately how long ago did the big bang occur? How long did it take the earth to form? What came before the big bang?

When water vapour rises from oceans it cools condenses to form what?

Was the belief that they (1) were better educated than native-born Americans (2) had a higher standard of living than most Americans (3) adapted easily to American culture (4) competed with Americans for jobs as unskilled laborers

What is the mass, volume, density, and substance for Block C:

Which factors affect electronegativity? A. Number of electrons and atomic radius B. Number of unshielded electrons and density of the element C. Atomic radius and number of unshielded protons D. Density of the element and atomic radius

What is the difference between an amide and an amine? And what is a substituted amide?

Balance the following chemical equation: / text{CH}_ 4 + CH 4 + start text, C, H, end text, start subscript, 4, end subscript, plus / text{O}_ 2 / rightarrow 2 →start text, O, end text, start subscript, 2, end subscript, right arrow / text{CO}_2 +

How did the invention of the spectroscope in 1859 change the science of chemistry