<em>Answer:</em>
The new weight-loss supplement was less effective on females in the study. That is because only 65% of them lost weight after two weeks, whereas 74% of the males lost weight after two weeks.
<em>Explanation:</em>
37 out of 50 males lost weight after two weeks, so 74% of males lost weight ( (37 · 2)/(50 · 2) ). 13 out of 20 females lost weight after two weeks, so 65% of females lost weight ( (13 · 5)/(20 · 5) ). This means the supplement was less effective on females because males had a higher percentage of losing weight.
Hope this helps !! :D
Answer:
the amount of orbitals per period (row) will cause the difference between elements higher or lower on the periodic table.
Explanation:
a p e x
Answer:-
0.229 L
Explanation:-
Molar mass of AgBr = 107.87 x 1 + 79.9 x 1
=187.77 grams mol-1
Mass of AgBr = 150 grams
Number of moles of AgBr = 150 grams / 187.77 gram mol-1
= 0.8 mol
The balanced chemical equation is
NaBr (aq) + AgNO3 (aq)--> AgBr(s) + NaNO3(aq)
From the equation we can see that
1 mol of AgBr is produced from 1 mol of AgNO3.
∴ 0.8 mol of AgBr is produced from 1 x 0.8 / 1 = 0.8 mol of AgNO3.
Strength of AgNO3 = 3.5 M
Volume of AgNO3 required = Number of moles / strength
= 0.8 moles / 3.5
=0.229 L
Answer:
- The third choice: <u><em>Only temperature (degrees C) is the independent variable.</em></u>
Explanation:
The <em>independent variable</em> is generally represented on the horizontal axis.
In the graph the horizontal axis is labeled Temperature (°C), so this is the independent variable.
The <em>dependent variable</em><em> </em>is represented in the vertical axis. In the shown graph it is Flow time (s).
The independent variable is the input of the function or relation and it determines or explains the dependent variable.
So, on the given graph you can you can tell that the flow time (measured in seconds) depends on, or is determined by, the temperature (measured in °C).
The<em> slope</em> of the trend line is the measure of how much the dependent variable changes, on average, when the independent variable changes one unit. For the shown graph, the slope is change in flow time divided by the change in temperature.