Answer:
C) 75.78 g
Explanation:
Given parameters:
Volume of cloud = 94.2L
Molar mass of water = 18.02g/mol
Unknown:
Mass of water = ?
Solution:
Water is the bulk component of a cloud. To solve this problem, let us find the number of moles of the water using the relationship below first;
Number of moles of water =
Number of moles of water = = 4.21moles
Now to find the number of moles;
Mass of water = number of moles of water x molar mass
= 4.21 moles x 18.02g/mole
= 75.78 g
Answer:
Sodium Sulfide + Silver Nitrate = Sodium Nitrate + Silver Sulfide
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Explanation:
A property that does no change the chemical composition of a substance are known as physical properties.
For example, mass, volume, size etc are all physical properties.
Whereas a property that changes the chemical composition of a substance are known as chemical properties.
For example, reactivity, toxicity etc are all chemical properties.
Therefore, identifying the given statements as follows.
- The various components of a mixture do not combine chemically - physical property.
- Chemical properties can only be observed during a chemical reaction - chemical property.
- The rusting of iron is a chemical reaction - chemical property.
- Melting and boiling points are physical properties - physical property.