Thus problem is providing us with the mass of iron (III) oxide as 12.4 g so the moles are required and found to be 0.0776 mol after the calculations:
<h3>Mole-mass relationships:</h3>
In chemistry, we use mole-mass relationships in order to calculate grams from moles and vice versa. In this case, since we are given the mass of iron (III) oxide as 12.4 g one can calculate the moles by firstly quantifying its molar mass:
Then, we prepare a conversion factor in order to cancel out the grams and thus, get moles:
Learn more about mole-mass relationships: brainly.com/question/18311376
Answer:
The correct answer is Choice C.
(Phenol red indicator.)
Explanation:
Phenol red indicator is an organic dye that acts as an acid-base reaction indicator in the pH range of 6.8 to 8.4.
In acidic solutions, the color is purple, and in simple solutions, the color is red.
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Answer:
x = 130 Ms⁻¹
Explanation:
The equation is:
x = (2.4 x 10³ M⁻²s⁻¹)(0.38 M)³
The expression raised to the power of 3 is simplified:
x = (2.4 x 10³ M⁻²s⁻¹)(0.054872 M³)
The two values are multiplied together and units canceled:
x = 130 Ms⁻¹
528 calories or 2207.04 joules.
Q=MCT
Q=(6g)(1.0cal/g°C)(88°C)
Q= 528 calories
Q=MCT
Q=(6g)(4.18joules/g°C)(88°C)
Q= 2207.04 joules