Calcium sulfide forms when calcium loses 2 valence electrons to sulfur. What type of a bond is formed?

Select one of the options below as your answer:

A) covalent

B) ionic

2.088 g sample of a compound containing only carbon, hydrogen, and oxygen is burned in an excess of dioxygen, producing 4.746 g CO 2 and 1.943 g H 2O. What is the empirical formula of the compound?

5) Solid lithium metal is added to an aqueous solution of magnesium chloride forming lithium chloride solution and solid magnesium a. If you begin the reaction with 15.0 g of lithium and 25.

Methylene chloride (CH2Cl2) has fewer chlorine atoms than chloroform (CHCl3). Nevertheless, methylene chloride has a larger molecular dipole moment than chloroform. Explain.

Explain why aluminum is a substance

An administrator in a very large company wants to estimate the mean level of nitrogen oxides (NOX) emitted in the exhaust of a particular car model in their very large fleet of cars.

How to assign oxidation and reduction numbers

How to tell difference between hydrogen gas and oxygen gas?

Why do atoms have different speed

Jose gets up from his seat on the bus to move closer to the front. Just as he begins to walk forward, the bus stops at a light.

How would you present weight change if Earth had twice the mass that it does