The mass of hematite that contains 8.0×10³ kg of iron is 2.29 × 10⁴ kg.
<h3>What are iron ores?</h3>
Iron ores refers to minerals in which iron occur in combined form found in the earth's crust.
Some ores of iron include:
- hematite,
- magnetite,
- limonite, and
- siderite.
Molar mass of hematite, Fe₂O₃ = 160 g/mol
Molar mass iron = 56 g/mol
Percent mass of iron in hematite = 56/160 = 35%
The mass of hematite that contains 8.0×10³ kg of iron = 8.0 × 10³kg/0.35 = 2.29 × 10⁴ kg.
Therefore, the mass of hematite that contains 8.0×10³ kg of iron is 2.29 × 10⁴ kg.
Learn more about iron ores at: brainly.com/question/4693242
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Heres the answer to the rest of that paper as well
5 atoms is in 2CaCO3
Element: 1 atom
Compounds: 2+ atoms
Answer:
silicon
Explanation:
the 14th element in the periodic table of elements.
Hello!
SOLID- atoms are packed tightly together with little movement. Has a definite shape and volume.
LIQUID- atoms are packed loosely together with some movement. Has a definite volume but NO definite shape.
GAS- atoms are spread out with lots of movement. Has NO definite shape or volume.
ICE- when a liquid turns into a solid (freezing).
WATER- when a solid turns into a liquid (heat is added)
WATER VAPOR- when a liquid turns into a gas (boiling)
Hope this helped!
