How many carbon atoms are present in a mole of 12C?

Over time heat and pressure can change quartz into quartzite quartzite is A. An ingenious rock B. A metamorphic rock

What ion will be formed by the selenium atom shown below when it has a stable set of valence electrons? Selenium atom A. Se6 + B. Se2 + C. Se6 - D. Se2-

Why is the second ionization energy of any element higher than its first ionization energy?

Does it take faster for sugar or color (tint) to dissolve in water and WHY? Does diffusion between oil and water happen? Explain why.

How are chemical bonds formed? A) Through obtaining 10 Valence electrons B) Through removing parts of the nucleus C) Through transferring or sharing electrons D) Through gaining a core electron

The measure of the force with which air molecules push on a surface that a called

Which property of CNG is used to fill it in cylinders?

How many milliliters of 2.55 m naoh is needed to make 125 ml of 0.75 m naoh solution?

Describe the scientific method and it's four steps.

Why can a magnet separate iron and sulphur in a mixture but not a compound?