Which of the following elements could be described as least reactive, relative to the other three answer choices?

A. Au

B. Ca

C. Fe

D. Mg

How many moles of NO3 are there in 6.2g

Wood rotting physical or chemical change?

The diagram below shows the wavelengths and frequencies for the various regions of the electromagnetic spectrum. Based on the visible light spectrum, which of the following has the longest wavelength? A. a ray of green light B.

Exit 128.3 grams of methane (CH4) is equal to how many moles of methane?

What is the sum of the coefficient when the following equation is balanced: __ H2SO4 + __ NaOH → __ H2O + __ Na2SO4 a. 4 b. 5 c. 6 d. no right answer

How does the conservation of matter relate to balancing equations?

Ethanoic acid and 1-butanol can react to produce water and a compound classified as an 1) aldehyde 2) amine 3) ester 4) halide

Sodium metal reacts with water to form aqueous sodium hydroxide and hydrogen gas. which equation below best describes the balanced equation for this reaction?

2H2 + O2 - - > 2H2O If 16 mol of oxygen were reacted with excess hydrogen gas, how many moles of water would be produced?

Which subatomic particle identifies an atom as that of a particular element? how is this particle related to the atoms atomic number