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100

If the concentration of CO2 is increased in the reaction below, what will happen to the equilibrium position? CO2+ H2O two arrows on top/bottom H2CO3

according to Le Chatelier's principle, increasing the concentration of CO2 will shift the equilibrium to the right, producing more carbonic acid  (H2CO3) to relieve the stress.

100

What is the pH of a solution with [H+] = 1 x 10-3?

pH=3

100

Identify conjugate Acid-base Pairs

In HCI+ H2O --> H3O++ CI- 

Acid: HCI 

Base: H2O

Conjugate Acid: H3O+

Conjugate Base: CI-

100

What is the molar mass of sodium sulfate (Na2SO4)?

Na: 22.99 x 2= 45.98

S:32.07

O: 16.00 x 4= 64.00 

add them and 142.05 g/mol

100

What is the name of the compound Ca(OH)2 ?

Calcium Hydroxide 

200
what is the balanced chemical equation for reaction between hydrochloric acid (HCI) and magnesium hydroxide (Mg(OH)2)?

2HCI + Mg(OH)2 --> MgCI2 + 2H2O

This is a neutralization reaction when an acid (HCI) reacts with a base (Mg(OH)2) to form a salt (MgCI2) and water 

200

If the pH is 5, what is the pOH?

pOH = 9 

200

What is the molarity of 3 moles of NaCI in 6 L of solution? 

M= 3/6 =0.5 M

200

Predict the products of the reaction BaCI2 + Na2SO4-->? 

Products = BaSO4 (solid) + 2NaCI 


200

Write the formula for aluminum nitrate .

AI(NO3)3

300

What acid forms when CO2 dissolves in seawater?

Carbonic Acid (H2CO3)

300

In the reaction NH3 + H2O arrows top and bottom NH+4 + OH- Identify the acid - base pairs.


BLB =NH3, Bla=H2O 

CA= NH+4, CB= OH-

300

What is the mole ration of H2 to O2 in the equation 2H2 + O2 --> 2H2O ?

2:1

300

Will this reaction occur? Mg + HCI-->?

Yes, Magnesium is more reactive than hydrogen Products: MgCI2 + H2

300

what type of intermolecular force is strongest in water (H2O)

Hydrogen bonding 

400

write a balanced equation for the neutralization of HCI by Mg(OH)2.

2HCI + Mg(OH)2 --> MgCI2 + 2H2O
400

How does the rising atmospheric CO2 affect ocean pH?

it lowers pH, making the oceans more acidic 

400

If 2 Mol of AI reacts with 6 mol of HCI, which is the limiting reactant? 2AI + 6HCI --> 2 AICI3 + 3H2

reactants are in perfect ratio --> Neither is limiting 

400

Classify this reaction:

2KCIO3--> 2KCI +3 O2

decomposition reaction 

400
Is CH4 polar or no polar, and why 

Nonpolar, because it has symmetrical geometry and equal sharing of electrons.

500

In an exothermic reaction, what happens if temperature increases?

The system shifts to the left. (favoring the reverse reaction)

500

Which is a stronger acid: HCI or acetic acid (CH3COOH)?

HCI, because it completely dissociates in water.

500

How many grams of CO2 are produced when 1 mole of C6H12O6 + 6 O2--> 6CO2 + 6 H2O

6 moles of CO2 x 44.01 g/mol = 264.06 g CO2

500

C3H8 + O2 --> CO2+ H2O

C3H8+ 5O2 --> 3CO2 + 4H2O

500

Is NaCI an Ionic or covalent compound? 

Ionic, because it's formed between a metal (Na) and a nonmetal (CI)