the molarity of KCl solution prepared by dissolving 0.898 mole of KCl in 250 ml water is calculated using the below formula
molarity= moles/volume in liters
moles= 0.898 moles
volume in liters= 250/1000 =0.25 liters
molarity is therefore= 0.898/0.25= 3.592 M
Answer:
long
Explanation:
Uranus has a tilt, causing seasons, and they are each 21 earth years long.
Answer:
Wt%H₂SO₄ = 10.2% (w/w)
Explanation:
1.61 molal H₂SO₄ = 1.61 mole H₂SO₄/Kg Solvent = 1.61 mole(98 g/mole)/Kg Solvent = 113.68 g H₂SO₄/Kg Solvent
Solution weight = 1000 g solvent + 113.68 g solute = 1113.68 g Solution
Wt%H₂SO₄ = (113.68 g/1113.68g)100% = 10.2% (w/w)
Answer:
releases, increase
Explanation:
The total energy of products in an Exothermic reaction is less compare to
total energy of the reactants. As a result of these the enthalpy becomes negative, then there is release of heat to the surroundings, which increase the energy of the immediate surroundings inform of heat. Hence the system release energy while the surroundings energy increase.
Answer:
I can answer 26 and 27.
26:
Lighter igneous rocks are more granatic meaning they contain more silica.
Darker igneous rocks are more basaltic meaning they contain more iron and magnesium.
27:
A rock full of holes is likely an igneous rock which formed with many gas pockets inside.
