Answer:
Time (months) is the independent variable
Growth (measured) is the dependent variable.
Explanation:
Let y = growth
Let x = time
The result will yield a relation of the form
y = y(x), or y is a function of x.
x, the time can be controlled. The experimenter can decide how many months to conduct the experiment. It is the independent variable.
y, the growth is a response to the amount of time allowed for growth. It depends on x, therefore y is the dependent variable.
Answer:
Mass of barium sulfate = 8.17 g
Explanation:
Given data:
Mass of sodium sulfate = 4.98 g
Mass of barium sulfate produced = ?
Solution:
Na₂SO₄ + Ba(NO₃)₂ → BaSO₄ + 2NaNO₃
Moles of sodium sulfate:
Number of moles = mass/molar mass
Number of moles =4.98 g / 142.04 g/mol
Number of moles = 0.035 mol
Now we will compare the moles pf sodium sulfate and with barium sulfate.
Na₂SO₄ : BaSO₄
1 : 1
0.035 : 0.035
Mass of barium sulfate:
Mass = number of moles × molar mass
Mass = 0.035 mol ×233.4 g/mol
Mass = 8.17 g
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