Answer: 40 grams
Explanation:
The quantity of Heat Energy (Q) required to heat a substance depends on its Mass (M), specific heat capacity (C) and change in temperature (Φ)
Thus, Q = MCΦ
Since Q = 93.4J
M = ?
C = 0.129 J/g.C
Φ = 40.4°C - 22.3°C = 18.1°C
Then, Q = MCΦ
Make Mass, M the subject formula
M = Q/CΦ
M = (93.4J) / (0.129 J/g.C x 18.1°C)
M = 93.4J / 2.33J/g
M = 40 g
Thus, the mass of the lead is 40 grams
True! You can use the percentage to determine the amount of moles of each substance in the compound, and then use that information to find the empirical formula.
The thing that changes the thing that doesn't change is called the control
Answer:
B
Explanation:
solute is what gets dissolved in the solvent
ie: salt in water. salt is the salute and the more of it you add to the water (solvent) the more interactions will occur increasing rate
