C1, C2, C3 supplement

State the formula for isotope abundance

Is the energy released or absorbed when it melts?

absorbed

Is the energy released or absorbed when it evaporates??

absorbed

Is the energy released or absorbed when it condenses?

released

Is the energy released or absorbed when it freezes?

released

What are the bond/covalent structure for silicon oxide?

Each silicon atom is bonded to four other oxygen atoms

Each oxygen atom is bonded to two other silicon atoms

What are the similarities in silicon dioxide and diamonds covalent structure?

High melting point

Cannot conduct electricity

hard solids

What is a theoretical yield?

The maximum amount of product theoretically that can be produced

What is the strong bonding of diatomic gas?

covalent bond

What is the diatomic molecules attracted to?

weak intermolecular forces

What is the structure for sodium chloride?

giant ionic lattice, the Na⁺ and Cl⁻ are arranged alternating

What if the formula for maximum solute dissolved?

Example

Define an isotope

A different atoms of the same element but has the same number of protons but a different number of neutrons.

What volume does one mole of gas occupy at r.t.p?

24dm3 or 24000 cm3

How do you find the limiting reactant?

You find the ratio of the equation

then compare that to the amount

What is the conversion between Dm3 and Cm3?

1dm3=1000cm3

How do you find the empirical formula?

convert the percentage according to the mass of sample

Divide each element with their Ar

How do I calculate the mass of a product from the mass of a reactant?

1. Find the reactant moles: mass / Mr

2. Use the equation ratio to find the product mole

3. Find product mass, mole x Mr

How do I calculate the product mass from gas volume at r.t.p?

1. Find gas moles: volume in Cm3 / 24,000 cm3

2. Use the equation ratio to find product moles

3. Find product mass: product moles x Mr

How do I calculate moles from a solutions concentration and volume?

1. Convert cm³ to dm³

2. dm³ x mol/dm³

How do I calculate an unknown concentration in a titration?

1. convert cm³ to dm³ of the known volume

2. Dm³ x concentration( mol/dm³)

3. used balanced equation ratio

4. mole/volume of unknown solution in dm³