what is the process of a substance that changes from a solid directly to a gas without becoming a liquid

How many grams of H2SO4 are needed to react with 0.75 moles of NaOH?

Which best describes the two ways that energy is measured A. In convection and in temperature B. In temperature and in radiation C. In radiation and in convection D. In wavelength and in temperature

Sodium reacts with chlorine gas to produce sodium chloride if 10 moles of chlorine reacts with 5 moles of sodium, which reactant will be the limiting reactant

The Second Law of Thermodynamics assures us that: perpetual motion is possible all matter left to itself moves toward disorder electrons should orbit indefinitely none of these

Solution A contains 5 molecules of albumin (protein) and solution B contains 12 molecules of glucose. The solutions are separated by a membrane. What way will water move? A.

Before a race, an athlete warms up by jogging around the track shown below at a constant rate of 2.3 m/s. What statement best describes his motion as he jogs around the curved part of the track?

What physical property is changed when a waitress pours coffee from a pot into four mugs? temperature density volume color

Calcule o calor especifico do estanho sabendo que foram necessarias 100 cal para elevar em 20ºC a temperatura de 100 g de estanho

What's the smallest part of a compound

The inertness of the noble gases is due to a. the outermost shell has six electrons. b. the bonds they form with other elements. c. the number of protons and neutrons. d.