Answer:
116.3 kJ
Step-by-step explanation:
Three heat transfers are involved
q = Heat to warm ice + heat to melt ice + heat to warm water + heat to evaporate water + heat to warm steam
q = q₁ + q₂ + q₃ + q₄ + q₅
q = mC₁ΔT₁ + mΔH_fus + mC₃ΔT₃ + mΔH_vap + mC₅ΔT₅
<em>Step 1</em>: Calculate q₁
m = 37.0 g
C₁ = 2.010 J·°C⁻¹g⁻¹
ΔT₁ = T_f – T_i
ΔT₁ = 0.0 – (-10.0)
ΔT₁ = 10.0 °C
q₁ = 37.0 × 2.010 × 10.0
q₁= 743.7 J
q₁= 0.7437 kJ
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<em>Step 2</em>. Calculate q₂
ΔH_fus = 334 J/g
q₂ = 37.0 × 334
q₂ = 12 360 J
q₂ = 12.36 kJ
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Step 3: Calculate q₃
C₃ = 4.179 J·°C⁻¹g⁻¹
ΔT₃ = T_f – T_i
ΔT₃ = 100 – 0
ΔT₃ = 100 °C
q₃ = 37.0 × 4.179 × 100
q₃ = 15 460 J
q₃ = 15.46 kJ
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<em>Step 4</em>. Calculate q₄
ΔH_vap = 2260 J/g
q₄ = 37.0 × 2260
q₄ = 83 620 J
q₄ = 83.62 kJ
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<em>Step 5</em>. Calculate q₅
C¬₅ = 2.010 J·°C⁻¹g⁻¹
ΔT₅ = T_f – T_i
ΔT₅ = 155.0 – 1000
ΔT₅ = 55.0 °C
q₅ = 37.0 × 2.010 × 55
q₅ = 4090 J
q₅ = 4.090 kJ
===============
Step 6. Calculate q
q = 0.7437 + 12.36 + 15.46 + 83.62 + 4.090
q = 116.3 kJ
The heat required is 116.3 kJ.
An aquifer is a permeable rock which can contain or transfer water.
Saturated had as much solute that it can hold, supersaturated holds more than can normally be dissolved.
7.4x10^23 = molecules of silver nitrate sample
6.022x10^23 number of molecules per mole (Avogadro's number)
Divide molecules of AgNO3 by # of molecules per mol
7.4/6.022 = 1.229 mols AgNO3 (Sig Figs would put this at 1.3)
(I leave off the x10^23 because they both will divide out)
Use your periodic table to find the molar weight of silver nitrate.
107.868(Ag) + 14(N) + 3(16[O]) = 169.868g/mol AgNO3
Now multiply your moles of AgNO3 with your molar weight of AgNO3
1.229mol x 169.868g/mol = 208.767g AgNO3
the same
Explanation:
Within the nucleus of individual atoms of the same element, the proton number is the same.
All atoms of the same kind from the same element have the same number of protons.
The number of protons does not change, it remains fixed after a chemical reaction.
Different elements have different number of protons that typifies and makes them unique.
But atoms of the same element have the same number of protons in them.
learn more;
Atomic number brainly.com/question/5425825
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