6. (07.05 HC) In an experiment, sulfuric acid reacted with different volumes of sodium thosulfate in water. A yellow precipitate was formed during the reaction. A cross drawn at the base of each flask
became gradually invisible due the formation of this yellow precipitate. The time taken for the cross to become invisible was recorded. A partial record of the experiment is shown.
Experimental Record
Flask Volume of Volume of
Volume of Time
M250 Sodium Thiosulfate Water
1 5 ml 50 ml
O mL 19 seconds
2
5 ml
40 ml
10 ml
3
5 ml
30 ml
20 ml
4
5 ml
20 ml
30 ml
Based on your knowledge of factors that affect the rates of chemical reactions, predict the trend in the last column of the experimental record. Use complete sentences to explain the trend
you predicted. You do not have to determine exact values for time; just describe the trend you would expect (Increase or decrease) and why it occurs. (5 points)

I think that the trend that would be seen in the time column of the data table would be that the number of seconds would increase. I know this because for each flask, the concentration of sodium thiosulfate decreases, since less of it is being mixed with more water. Also, when the concentration of a substance decreases, then the reaction rate also decreases, as there will be fewer collisions with sulfuric acid if there are fewer moles of sodium thiosulfate. When there are fewer collisions in a reaction, the reaction itself will take longer, and so when the sodium thiosulfate is diluted, the reaction takes more time.

Hope this helps you and any others :)

it is x=-4

step-by-step explanation:

c

step-by-step explanation:

there is vertical asymptote at x = 2 and x = 0

vertical asymptote occurs at the points where the denominator is 0. so we can say that

x = 2 occurs when there is a factor (x-2) in the denominator, and

x = 0 occurs when there is a factor "x" in the denominator

thus, the denominator of the equation would have "x * (x-2)", this is option c only. that's the correct answer.