1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
IgorLugansk [536]
3 years ago
15

I need some help with my quiz

Chemistry
2 answers:
Nezavi [6.7K]3 years ago
5 0

Answer:

b)

Explanation:

the data for the average height of the plants in all three trails contains error

Eduardwww [97]3 years ago
4 0

Answer:

I believe the answer is B. The data for the average heights for the plants in all three trials contain errors.

Explanation:

Because if you look at the heights for all three trials you find that they have no pattern and that some have higher plants for each one. This suggests that either there is an error or maybe the fertilizer doesn't effect this specific bean plant.

Hope this helps!

You might be interested in
Which is a set of valid quantum numbers?
Mariana [72]

The last set which is n=4 l=3 m=3 is a valid set

7 0
3 years ago
Read 2 more answers
Is ineffective collision's the answer? Please correct me if not, thank you. :)
AleksAgata [21]
Yes! You're correct! Hope this helps! :D
6 0
3 years ago
An iron ore sample weighing 0.5562 g is dissolved HCl (aq), and the iron is obtained as Fe2 in solution. This solution is then t
erik [133]

Answer:

\% Fe^{+2}=70%

Explanation:

Hello,

In this case, we could considering this as a redox titration:

Fe^{+2}+(Cr_2O_7)^{-2}\rightarrow Fe^{+3}+Cr^{+3}

Thus, the balance turns out (by adding both hydrogen ions and water):

Fe^{+2}\rightarrow Fe^{+3}+1e^-\\(Cr_2^{+6}O_7)^{-2}+14H^++6e^-\rightarrow 2Cr^{+3}+7H_2O\\\\6Fe^{+2}+(Cr_2^{+6}O_7)^{-2}+14H^++6e^-\rightarrow Cr^{+3}+7H_2O+6Fe^{+3}+6e^-

Thus, by stoichiometry, the grams of Fe+2 ions result:

m_{Fe^{+2}}=0.04021\frac{molK_2Cr_2O_7}{L}*0.02872L*\frac{6molFe^{+2}}{1molK_2Cr_2O_7}*\frac{56gFe^{+2}}{1molFe^{+2}}=0.388gFe^{+2}

Finally, the mass percent is:

\% Fe^{+2}=\frac{0.388g}{0.5562g}*100\%\\  \% Fe^{+2}=70%

Best regards.

8 0
3 years ago
Which property of water makes it helpful to use in car radiators?
Nezavi [6.7K]
The correct answer is<span> C) Water takes long to heat and cool down than other liquids.

It doesn't climb up the sides of a tube any more than other solutions do, and being a universal solvent has nothing to do with radiators. It does however take a long time to heat and cool down since you don't have a 100+ celsius burner to heat it up in an instant.</span>
5 0
3 years ago
15. A pipe leaks water at a rate of 1.24 mL/s. What is the rate of the water leak in L/hr?<br> ALL
alex41 [277]

Answer:

4.46

Explanation:

1.24 ml= 0.00124 L

3600 s=1 hr

0.00124 x 3600=4.46

8 0
3 years ago
Other questions:
  • If you burn 50.6 g of hydrogen and produce 452 g of water, how much oxygen reacted?
    14·1 answer
  • Can someone help me I would really appreciate it
    10·1 answer
  • On average, Earth’s crust contains about 8.1% aluminum by mass. If a standard 12-ounce soft drink can contains approximately 15
    5·1 answer
  • If she suddenly dropped the books, this would increase their energy. If she instead decided to hold the books over her head, thi
    5·1 answer
  • What is the correct formula for potassium sulfite? khso khso4 k2so4 k2so3
    11·2 answers
  • A sample of liquid ammonia has a density of 0.7 g/mL. Find the mass of a 20 mL
    12·1 answer
  • The quality of an object that resists a change in motion or resists a change in the resting state
    9·1 answer
  • Which one does Temperature measure
    11·1 answer
  • 4.Calculate the Hydroxide, Hydrogen ion and POH of solution if the PH of solution is 7.b
    12·1 answer
  • Find the "density" of a copper sample whose mass is 134.4 grams and whose volume is 15.0mL
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!