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Dmitry [639]
3 years ago
14

Liquids and gases are matter because they take up space and have

Chemistry
1 answer:
Aneli [31]3 years ago
8 0
Volume. Gases and liquids are typically measured in milliliters (mL) or cubic centimeters (cm^3) - both of which are equivalent (1 mL = 1 cm^3).
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Write a balanced chemical equation, including physical state symbols, for the decomposition of solid calcium carbonate (CaCO₃) i
ziro4ka [17]

Answer:

CaCO3 (s)  → CaO (s) + CO2 (g)

The mass of carbonate that must have reacted was 43.03 grams

Explanation:

CaCO3  → CaO + CO2

Relation between reactant and product is 1:1

Let's apply the Ideal Gas Law to find out the moles of CO2 which were produced.

P . V = n . R . T

1 atm . 23 L = n . 0.082 L.atm/mol.K . 653K

(1atm . 23L) / (0.082 mol.K/L.atm . 653K) = n

0.43 moles = n

0.43 moles of CO2, were produced from 0.43 moles of CaCO3.

Molar weight of CaCO3 = 100.08 g/m

Mass = Molar weight . moles

Mass = 100.08 g/m 0.43 m = 43.03 g

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Some hidden evidence can be seen with this type of light
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You Would Need A(n) Blacklight Or AKA UV Light

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Which of these statements best describes the relationship difference between minerals and rocks
ioda
The statement that best describes the relationship difference is most rocks are made out of minerals.
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Which of the following elements have properties similar to those of astatine?
vekshin1
<h3><u>Answer;</u></h3>

F, Br, l

<h3><u>Explanation;</u></h3>
  • Astatine is a member of the halogen family, elements in Group 17 (VIIA) of the periodic table.
  • It is a highly radioactive element and it is the heaviest known halogen. Astatine is similar to the elements above it in Group 17 (VIIA) of the periodic table, especially iodine.
  • One property of iodine is that it tends to collect in the thyroid gland .
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The system of electrons surrounding the nucleus of an atom
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Shielding electrons
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