Qual elemento possui o maior numero de atômico

Which of the following pairs of elements is most likely to form an ionic compound? a oxygen and fluorine b sodium and aluminum c calcium and chlorine d nitrogen and sulfur

Must new substance before when you have a chemical property

The physical state of the substances of wood

One carbon (c) and one ozone (O3) react to form one carbon monoxide (CO) and one oxygen gas (O2) particle. How many ozone particles are needed to get 24 particles of oxygen gas (O2) ?

A solution at 25 degrees Celsius with a pH of 7 contains a) more H3O + ions than OH - ions b) fewer H3O + ions than OH - ions c) an equal number or H3O + ions and OH - ions d) no H3O + ions or OH - ions

Why is uranium 235 the most commonly used isotope for nuclear fission in current uses in nuclear power generation?

Based upon the pH scale, a vegetable with a pH of 5.3 would be

How many grams of Cl are in 535 g of CaCl2?

2. An object experiences an acceleration, g, when it is on the surface of a planet of radius R. What will be the acceleration on the object after it has been moved to a distance of 4R from the center of the planet? A) 168 B) 48 C) 1/4 g D) 1/16 g

For a successful TLC experiment, you need to pay attention to the details. From the list of instructions and tips below, select the detail that is NOT important to a TLC experiment. O O Do not disturb the developing chamber.