If something has an atomic number of 13 and an atomic mass of 26.98 how many protons does It have

The warmest temp ever measured in the us is 134 degrees F. Convert that temp to C and K

Suppose that CaO is added as an impurity to Li2O. If the Ca2 + substitutes for Li+, what kind of vacancies would you expect to form? How many of these vacancies are created for every Ca2 + added?

Write the formula for the the ionic compound zinc and hydroxide

Two moles of oxygen gas is reacted with hydrogen gas to produce water in this reaction: 2 H2 + O2 → 2 H2O In the lab you actually made 33.1 grams of water. What is the percent yield? 218.10% 91.80% 45.87% 54.50%

What are some conditions that might control deposition

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.