The complete question is;
How many Joules of heat energy would be required to raise the temperature of 16.0 g of lead from 25 degrees to its melting point of 327 degrees for a length of time long enough to completely melt the lead.
Specific heat capacity of lead is 0.159 J/gK and the molar enthalpy of fusion is 24.7 J/g
Heat is given by mcΔT
Δ T= 322 ° c = 322 +273 = 595 K
Heat = (16 × 595 × 0.159) + (24.7 × 16 )
= 1513.68 + 395.2
= 1908.88 Juoles
The answer is (4) zinc. Zinc can react with HCl at room temperature spontaneously and create H2. You can know this property from the metal activity order.
Answer:
43 mL would be the volume in milliliters of the liquid that should be used
Explanation:
Ethylene glycol density = 1114 kg/m³
Mass of ethylene glycol density = 47.9 g
Let's convert the density to units of g/mL
1 cm³ = 1mL
1 kg = 1000 g
1m³ = 1000000 cm³
1114 kg . 1000 g / 1kg = 1114000 g
Ethylene glycol density = 1114000 g / 1000000 cm³ = 1.114 g/mL
Now we can apply the mass, to determine the volume in mL
Ethylene glycol density = Ehtylene glycol mass / Ethylene gylocl volume
1.114 g/mL = 47.9 g / Ethylene gylocl volume
Ethylene gylocl volume = 47.9 g / 1.114 g/mL → 42.99 mL ≅ 43mL
Answer:
1.6621 x 10^22 atoms are in the bracelet.
Explanation:
Boom logic...