Iron<span> is magnetic and the other two not, which means a magnet could be used to attract the </span>iron filings<span> out of the mixture, leaving the salt and </span>sand<span>. Salt is water soluble, while </span>sand<span> is not. This means the two can be mixed in water and stirred. The salt will dissolve and the </span>sand<span> will not.</span>
Answer:
True
Explanation:
The wind speed to be considered a tornado is 40 to 72 mph
I think you want to ask about the steps of problem solving. The basic steps are state the problem, form a hypothesis, test the hypothesis, collect the data, analyze the data and draw conclusions.
Answer:
The answer to your question is C = 2.01 J/g°C
Explanation:
Data
mass = m = 278 g
Temperature 1 = T1 = 0.8°C
Temperature 2 = T2 = 15.9 °C
Heat = Q = 8.46 x 10³ J
Heat capacity = C = ?
Process
1.- Write the formula to calculate the heat
Q = mC(T2 - T1)
2.- Solve for C
C = Q / m(T2 - T1)
3.- Substitution
C = 8.46 x 10³ / 278 (15.9 - 0.8)
4.- Simplification
C = 8.46 x 10³ / 4197.8
5.- Result
C = 2.01 J/g°C
Answer:
D. none of these is right