how much energy is required to heat an iron nail with a mass of 25.5 grams from 65° until it becomes red hot at 720 degrees Celsius

How many valence electrons does a neutral atom of beryllium have

How your life would be affected if there was no more electricity?

indicators are chemicals that change colour in presence of an acid or an alkali. Universal indicators and pH meters are used to measure pH. Desccribe how you would use a universal indicator to find the pH of sodium hydroxide.

Which electromagnetic waves have the hugest energy? A: Gamma rays B: light waves C: radio waves D: X-Rays

What is the lewis dot structure for Boron Nitride? I was wondering what the Lewis dot structure for Boron Nitride is. I'm confused. I don't know if it has loan pairs or if on is supposed to be placed in the middle or what?

After pyruvate oxidation, the chemical energy of how many carbons of the original glucose molecule is converted to chemical energy in the form of atp in the remaining steps of cellular respiration?

What do you call all elements that are clearly not metals? ? nonmetals ? metalloids

Which of the slightly soluble salts below will be more soluble in acidic solution than in pure water? a. Mg (OH) 2 b. CaCO3 c. AgCl Mg (OH) 2 d. only Mg (OH) 2, e. CaCO3, and f. AgCl g. CaCO3 only h. both Mg (OH) 2 and CaCO3

What type of chemical bond is formed between two atoms of bromine 1. Metallic 2. hydrogen 3. Ionic 4. covalent

Before oceanography was recognized as its own branch of science it was part of A. Physics B. Chemistry C. Geometry D. Natural science