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If the electronegativity difference between the bonded atoms is 2.0 or higher, the bond is considered _____________.

Which of the following elements does not follow octet rule?

When is Mole Day celebrated every year?

Consider the following reaction:2 H2(g) + O2(g) → 2 H2O(g)If [x] mol H2 reacts with [y] g O2,Determine the theoretical yield of H2O in grams. Hint: Use the Smaller Amount of Product (SAP) approach._______ g H2O. Do not enter unit. You must show your work (SAP math) on scratch paper to get credit.

Consider a chemical reaction as represented by the following balanced chemical equation:Zn(s) + 2 HCl(aq) → ZnCl2(aq) + H2(g).What type of reaction is this?

A chemistry student determined the empirical formula of a compound with molar mass of 92.02 g/mol. After mole conversion steps from % mass composition, she got an empirical formula of NO2. What is the actual formula (molecular formula) of this compound?Enter the molecular formula of the compound in the text box provided. Do not worry about the subscripts. For example, H2O can be entered as H2O. You must show your work to receive credit.

Electrons are shared between combining atoms to form an ionic bond and and electrons are transferred from one atom to another to form a covalent bond.

How many moles of calcium are there in [x] g calcium phosphate (Ca3(PO4)2; MM = 310.18 g/mol)?_____________ mol Ca. Do not enter unit.

Consider the following reaction:2 H2(g) + O2(g) → 2 H2O(g)If [x] mol H2 reacts with [y] g O2,Determine the theoretical yield of H2O in grams. Hint: Use the Smaller Amount of Product (SAP) approach._______ g H2O. Do not enter unit. You must show your work (SAP math) on scratch paper to get credit.

The VSEPR theory allows us to determine the ___________.