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irina1246 [14]
3 years ago
14

Please help me out i'm new here but i really need help for science (if you need help with any hw like ela i can help!) (50 point

s) ima give more out in my other questions this is the 2 question make sure go to the first one!
Question 6 Slide 8 Pg 153 (image 1)
Is it...?? Choose one (check the image to see the questions and question answers)
1.
2.
3.
4.

Question 7 Slide 8 Pg 153 * (image 1)
Is it...?? Choose one (check the image to see the questions and question answers)
1.
2.
3.
4.

Question 8 Slide 8 Pg 153 * (image 1)
State the independent variable in this investigation?

Question 18 Slide 11 Pg 158 (image 2)

Is it...?? Choose one (check the image to see the questions and question answers)
1.
2.
3.
4.

Question 19 Slide 11 Pg 158 (image 2)
Is it...?? Choose one (check the image to see the questions and question answers)
1.
2.
3.
4.

Question 20 Slide 11 Pg 158 (image 2)

Is it...?? Choose one (check the image to see the questions and question answers)
1.
2.
3.
4.

Chemistry
1 answer:
andrezito [222]3 years ago
6 0
Q6. 3
Q7. 3
Q8. pH
Q18. 3
Q19. 3
Q20. 4
Hope this helped??
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Water is a produced when 30.0 grams of hydrogen reacts with 80.0 grams of oxygen what is the limiting reagent
irakobra [83]
The balanced equation for the reaction is as follows
2H₂ + O₂ --> 2H₂O
stoichiometry of H₂ to O₂ is 2:1
number of H₂ moles - 30.0 g / 2 g/mol = 15 mol 
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limiting reactant is the reagent in which only a fraction is used up in the reaction
if H₂ is the limiting reactant 
if 2 mol of H₂ requires 1 mol of O₂
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but only 2.5 mol of O₂ is required 
this means that O₂ is the limiting reagentt and H₂ is in excess
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5 0
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Please help me Solve this *I DONT WANT THE ANSWER* Just give me a good explanation...
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'Ordered Arrangement' basically means that it is a solid at room temperature. Room temperature is approximately 15-20C so we are looking for melting and boiling points that are above room temperature so it hasn't/can't melt or boil at room temperature and would therefore be solid. Option C is the only one where both points are temperatures above room temperature therefore option C is the only one where the substance would be in an 'ordered arrangement' at room temperature.

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