Answer:
Energy transfer is the movement of energy from one place to another.
Explanation:
However, energy cannot be created or destroyed :)
Answer:
0.01235 moles
Explanation:
<em>Given data:</em>
volume = 47.5 ml = 0.0475 L
concentration = 0.260 M
<em>To find:</em>
number of moles: ?
<em>Formula:</em>
No of moles = concentration x volume (in litres)
M is equal to moles per liter, so if you multiply the volume in liters times the value of M, the result will tell you the number of moles.
<em>Solution: </em>
no. of moles = 0.260 M x 0.0475 L
= 0.01235 moles
Answer:
true
Explanation:
drought is a period of unusually persistent dry weather that persists long enough to cause serious problems such as crop damage and/or water supply shortages. The severity of the drought depends upon the degree of moisture deficiency, the duration, and the size of the affected area.
The balanced equation for the above reaction is as follows;
CaCO₃ + 2HCl ----> CaCl₂ + H₂O + CO₂
stoichiometry of CaCO₃ to HCl is 1:2
molar volume states that 1 mol of any gas occupies a volume of 22.4 L at STP.
volume of 22.4 L occupied by 1 mol
therefore 0.56 L occupied by - 0.56 L / 22.4 L/mol = 0.025 mol
number of HCl moles reacted - 0.025 mol
2 mol of HCl reacts with 1 mol of CaCO₃
therefore 0.025 mol reacts with - 0.025/2 = 0.0125 mol
mass of CaCO₃ required - 0.0125 mol x 100 g/mol = 1.25 g
1.25 g of CaCO₃ is required