Answer: the land heat up faster then the sea
Explanation:
Answer:
132g
Explanation:
The reaction equation is given as:
CaCO₃ → CaO + CO₂
Given;
Number of moles of CaCO₃ = 3 moles
Unknown:
Mass of CO₂ produced = ?
Solution:
From the balanced reaction equation;
1 mole of CaCO₃ will produce 1 mole of CO₂;
3 mole of CaCO₃ will then produce 3 moles of CO₂
To find the mass of CO₂;
Mass of CO₂ = number of moles x molar mass
Molar mass of CO₂ = 12 + 2(16) = 44g/mol
Mass of CO₂ = 3 x 44 = 132g
Answer is "A".
Explanation;
Physical changes mean an arrangement of particles of a given substance without producing new substance but changes in physical form of the substance.
<em>Example :</em> vaporization of water ( water goes its gaseous phase from liquid form).
Chemical changes mean an arrangement of particles while forming new substance.
<em>Example : </em>heating of CaCO₃. (In this process CaO and CO₂ are formed).
In this problem, the volume of water has decreased. Hence, it can be said that this is an example of physical changes due to not forming of new substance.