Which formula represents an ionic compound?

(1) H2 (3) CH3OH

(2) CH4 (4) NH4Cl

How man total atoms are found in 2HCO3?

What is the difference between a proton and a neutron?

Carbon can form many different types of covalent compounds with a variety of other elements. True False

A container holds 7.5 liters of co2 at STP, how many moles of gas is this?

Suppose you had 2.0158grams of hydrogen (H2). A. How many moles of hydrogen do you have? B. How many moles of oxygen would react with this much hydrogen? C. What mass of oxygen would you need for this reaction? D.

N which orbitals would the valence electrons for selenium (Se) be placed? s orbital and f orbital s orbital only s orbital and p orbital d orbital only

Anne prepares a solution of copper nitrate with a concentration of 30 g/dm³. What mass of copper nitrate did she add to 100cm³ of water, in grams?

Chemists classify an element an element as a metal based on what physical properties

What is the mass of 222 ml of ice if the density of ice is 0.92 g/ml?

in a water molecule, two atoms of hydrogen and one atom of oxygen share electrons. A _ bond is found in a water molecule