作者:Carolina O 4 年以前
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The first division between continents was made by ancient Greek navigators, who named them 'landmass, terra firma'.
Generally classified by convention rather than any strict criteria, nowadays seven regions are regarded as continents from a geopolitical point of view.
You can find on this continent:
The world's largest snake and the second-longest lives here.
Name this snake as well as other animals that can be found in South America.
C3H8(g) + 5 O2(g) -> 3 CO2(g) + 4 H2O(g)
The largest forest, which covers 30% of South America's total area, is famous for its biodiversity. It’s crisscrossed by thousands of rivers, including the powerful Amazon.
Name this forest as well as its type.
CaCO3(s) -> CaO(s) + CO2(g)
The world's highest uninterrupted waterfall can be found here.
Write down its name, height and the country in which you can find it.
2 Mg(s) + O2(g) -> 2 MgO(s)
Australia is the world's smallest continent and is also known as an 'island continent' as it is surrounded by water on all sides.
It includes 14 countries and it is the least populated continent.
Its name comes from the Latin word 'australis' meaning 'southern' because it lies entirely on the south of the equator.
Moles
Unidades fórmula
Australia is home to some animals that can't be found anywhere else in the world.
Name at least 6 of these unique animals.
Átomos de O = (1.75 x 1022 moléculas C6H12O6) (6 átomos O / 1 molécula C6H12O6)
= 1.05 x 1023 átomos de O
= (5.23 g C6H12O6) (1 mol C6H12O6 / 180.0 g C6H12O6) (6.02 x 1023 moléculas C6H12O6 / 1 mol C6H12O6)
= 1.75 x 1022 moléculas C6H12O6
The largest sandstone monolith can be found here and it is one of Australia's most recognizable natural icons. It is the largest monolith in the world.
Name this rock and write down one of the characteristics it is famous for.
Moles de C6H12O6 = (5.380 g C6H12O6) (1 mol C6H12O6 / 180.0 g C6H12O6 ) = 0.02989 mol C6H12O6
The largest coral reef can be found here.
Name this coral reef, add its length and mention what type of coral is it.
6 átomos de C = 6(12.0 uma) = 72.0 uma 12 átomos de H = 12(1.0 uma) = 12.0 uma 6 átomos de O = 6(16.0 uma) = 96.0 uma llll C6H12O6 = 180.0 uma
La sustancia NaCl tiene una masa fórmula de 58.5 uma, y una masa molar de 58.5 g/mol.
Out of 14, how many countries you can name?
How about these countries' capitals?
Se lee como "mol inversa" o "por mol"
Hay esta cantidad de objetos (átomos, moléculas, iones) por cada mol.
La masa atómica de un elemento en unidades de masa atómica es numéricamente igual a la masa en gramos de 1 mol de ese elemento.
El H2O tiene una masa fórmula de 18.0 uma ⇒ 1 mol de H2O tiene una masa de 18.0 g
El Cl tiene una masa atómica de 35.5 uma ⇒ 1 mol de Cl tiene una masa de 35.5 g
Un mol siempre es el mismo número (6.02 x 1023), pero muestras de 1 mol de diferentes sustancias tendrán masas diferentes.
Asia is the world's largest continent of the seven continents in size, as it covers one-third of the earth's surface.
It includes 50 countries, and it is the most populated continent, 60% of the total population of the Earth lives here.
The only man-made structure that can be seen from space is located here.
Name this construction and add other facts about it.
Calcule el porcentaje de carbono, hidrógeno y oxígeno (en masa) de C12H22O11.
%O = ((11)(16.0 uma) / 342.0 uma) * 100% = 51.5%
%H = ((22)(1.0 uma) / 342.0 uma) * 100% = 6.4%
%C = ((12)(12.0 uma) / 342.0 uma) * 100% = 42.1%
Asia houses the highest point on earth.
Name this summit and write down how tall it is.
Unidades Fórmula
Si la fórmula es la de una sustancia iónica. La masa fórmula del NaCl está definida como la masa de una unidad fórmula.
La unidad fórmula de NaCl, consiste en un ion Na+ y un ion Cl-. MF de NaCl = 23.0 uma + 35.5 uma = 58.5 uma.
Masa Molecular (MM)
Si la fórmula es la de una molécula.
La MM de C6H12O6 = 6(12.0 uma) + 12(1.0 uma) + 6(16.0 uma) ...........................= 180.0 uma
Masa Atómica (MA)
Si la fórmula es el símbolo de un elemento.
La MA de Na es 23.0 uma.
Name as many as you can out of the 48 countries located in Asia.
Write down the capitals too.