chemistry

what is an objective in a lab report?

Objectives outline the general framework of the research direction and define what the researcher aims to achieve or explain.

what is a hypothesis in a lab report^?

Hypotheses, on the other hand, represent the expectations or preliminary answers that the researcher formulates based on these objectives, to be verified later through experimental or statistical means.

what is Ea?

Activation energy the amount of energy difference between the reactant and the height of the activation complex

What is EPac?

Potential of the activated complex from zero to the height of the activation complex

what is EPr and HR or EPP snd HP

EPR id the potential energy of the reactants

HR is the potential energy of the reactants

EPP id the potential energy of the products from zero to the the hightest value of the products

HP is the potential energy of the products from zero

what is Denla H

the difference between the height of the recants and products

what is specific heat capacity

the amount(quantity) of heat involved when you raised a substance’s temp by 1 degree C

what is the specific heat capacity of water

what are the two types of dissolution?

exothermic and endothermic reactions

what are the properties of gases

expansion with increased pressure and

Contraction when temp goes down volume decreases

Compression when volume does down pressure increases

how much is 1 atm

101.3 kpa or 760 mm Hg

What is considered room temperature

25 C

What is stp

standard temperature and standard temperature 0 C and 101.3 kpa

what is the conversion formula for converting atm to kpa

KPA= (101.3 KPA)(x mmg)

_________________________

160 KPa

what is the converson from kelvin(K)

0 C is 273 K

what is knetic energy of gas particles

kenetic energy(Ek) is related to the temperture of the gas

2 gas particles move freely to another space avalible.

when the space increases gas spreads

the force of attraction between gas particles is not strong enough to give gas a defined shape

gas particles are ina a continious rapid motions

they vibrate, translate and rotate

the collide constantly with one another and the walls of the container

what is avogadro’s hypothesis

if gasses have the same volume and pressure they will contain the same amout of mols

true or false pressure and volume have an inverse relationship

true pressure and volume have an inverse relationship

what is the formula for pressure

p(pressure)=F (force)

______________________

Area

what is the units of area

m²

what unit is force

Newtin (N)

what is Boyle’s law

(P1)(V1)=(P2)(V2)

P1=(V2)(P2)

_____

V1

What is the empathy change formula

Delta H= EPP-EpR

Hp is the rmpathy of the product

HR is empathy of the reactants

What are the characteristics of an endo and exo thermic reaction just by looking at the reaction

For endo

the value of delta H is positive

Heat is absorbed with the reactants

For exo

The calue of delta H is negative

Reactants release the heat

What is guy- lussac’s law

Pi P2

— = —

T1 T2

Temp is only in Kelvin

Preasure have to be the same unit either kpk or atm

What is the general gas law

P1V1. P2V2

—- = ——

T1. T2

How do you solve for general gas law

T1= p1 v1 T2

———

P2 V2

what is dalton’s law

Px Nx

__ =__

P total N total

it’s for a mix gas in the same container

how to solve

P(pressure of partial)=(partiame number of mols)(Total pressure)

=========================

Total mols

what are the conditions you need for charle’s law

for charle’s law pressure and amount of mols must be the same

temp in kelvim

if Keq is greater than 1 is the products or reactants favored?

products

what is avagadro’s hypothesis

if the question states all the gases have the same pressure they have equal volume

what is ideal gas law

P(V)=n(R=(8.31 Kpa)(Volume in L))(T)

(mol(Kelvin )

to solve for V or P divide the rest of the formula with it

What is effects chemical rection

Nature of the reactant

Concentration of a reactant

what is a dynamic equilibrium

• a closed system(closed container where nothing can enter or exit

• a continuation

when asking for ksp is the reactant a aquious, solid or a liquid

solid