The correct answer should be D) The frequency of Wave 2 is double the frequency of Wave 1.
This is because the frequency is how many waves there is in an amount of time, so 10 waves in 1 second has double the frequency of 5 waves in 1 second.
Hope that helps!
Answer:
19 °C
Explanation:
Step 1: Given and required data
- Mass of granite (m): 20 g
- Heat absorbed (Q): 300. 2 J
- Specific heat capacity of granite (c): 0.790 J/g.°C
Step 2: Calculate the temperature change (ΔT)
We will use the following expression.
Q = c × m × ΔT
ΔT = Q/c × m
ΔT = 300.2 J/(0.790 J/g.°C) × 20 g = 19 °C
Answer:
D) Measure 58.44g NaCl, dissolve it into 400ml water, and then top off to 500ml in a volumetric flask.
Explanation:
Step 1: Given data
Molarity (M): 2.00 M
Volume (V): 500 mL = 0.500 L
Molar mass of NaCl: 58.44 g/mol
Step 2: Calculate the required moles of NaCl
We will use the following expression.
n = M × V
n = 2.00 mol/L × 0.500 L
n = 1.00 mol
Step 3: Calculate the mass corresponding to 1.00 moles of NaCl
1.00 mol × 58.44 g/mol = 58.44 g
Step 4: Describe the procedure to prepare the solution
Measure 58.44g NaCl, dissolve it into 400ml water, and then top off to 500ml in a volumetric flask.
