Answer: -
Water can dissolve other substances. Which factor best contributes to this property of water?
d. Water particles are not fixed in place.
Explanation: -
When a substance like say common salt sodium chloride NaCl is dissolved in water, the water molecules surround the Na⁺ and Cl⁻ which result from dissolving of NaCl in water.
The water molecules by surrounding the Na⁺ and Cl⁻ help in dissolving NaCl.
Thus in order to surround them,the water molecules should not be fixed in their place and be free to move about.
Answer:
Explanation:
-Specific heat capacity is given by the formula:
Where:
is the heat gained or loosed by the substance
is the mass of the substance
is the specific heat of the substance
is the change in temperature
#We make c the subject of the formula and substitute to solve for it:
Hence, the specific heat capacity of the ice is
Answer:
(a)
(b)
(c)
Explanation:
Hello,
(a) In this case, with the given formula we easily compute the mass of gold contained in the sovereign as shown below:
(b) Now, by knowing the density of gold and copper, 19.32 and 8.94 g/cm³ respectively, we compute each volume, by also knowing that the rest of the coin contains copper:
(c) Finally, the volume is computed by dividing the total mass over the total volume containing both gold and copper:
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