Chemistry is Real

Make my name

100

Chemical name:

NaOH

sodium hydroxide

200

Chemical Name:

CaO

Calcium oxide

300

Chemical Name:

Na(NO₃)₂

Calcium nitrate

400

Chemical formula 

Potassium sulfite

K₂SO₃

500

Chemical name:

C₁₂H₂₂O₁₁

Sugar

I mass be smart

100

Relative formula mass

HCl

36.5

200

calculate the mass of 3 moles of potassium atoms

117g

300

How many grams of aluminum are in 30 moles of the metal?

810g

400

Which is the mass of 1 mole of chlorine gas?

(round off mass to the whole number) 

72g

500

0.5 moles of metal have a mass of 20 g. which is the molar mass of the element?

40g (Calcium)

Formula One

100

Balance equation, true or false?

N₂ + 3H₂ to 2NH₃

True

200

Balance this equation:

___ Al + ___ NaOH ___ Na3AlO3 + ___ H2

2 Al + 6 NaOH 2 Na3AlO3 + 3 H2

300

Balance this equation:

___ Cu + ___ HNO3 ___ Cu(NO3)2 + ___ NO + ___ H2O

3 Cu + 8 HNO3 3 Cu(NO3)2 + 2 NO + 4 H2O

400

What is the reaction type of this equation:

Sulfurous acid breaks down into water and sulfur dioxide gas.

a. double displacement

b. Decomposition

c. replacement/single replacement

b. Decomposition

Decomposition reactions.

These reactions follow the pattern:

AB→ A+B

500

Balance this equation:

Al₄C₃ +H₂O→ Al(OH)₃ +CH₄

Al₄C₃ +12H₂O→ 4Al(OH)₃ +3CH₄

I Chem you

100

What is the percentage of sodium in Na₂CO₃?

43.40%

200

What percent of AgNO3 is silver?

63.5%

300

What is the percent solution (by volume) when 50ml of ethanol is diluted to 140ml with water?

%= 60/140ml x 100 = 36%

400

Find the percent composition of this compound:

Al₂(SO₄)₃

Al: 16%

S: 28%

O: 56%

500

A certain newly synthesized compound is known to contain the elements zinc and oxygen.  When 30.00 grams of the sample decomposed; 24.12 grams of zinc remains. Determine the percent composition of the compound.

% of zinc = 80.40%

% of oxygen = 19.60%

Atomic explosion

100

Relative Atomic Mass

Ca

40

200

What is the Avogadro constant?

The number of particles present in one mole of any substance is fixed with a value of 6.022 × 10²³

300

Define relative atomic mass.

mass of a particular atom compared to the mass of an atom of hydrogen or simply same as mass number

400

True or False:

Relative atomic mass is always smaller than the atomic number

False. It is bigger

500

What is the unit for the relative atomic mass

amu