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dybincka [34]
3 years ago
7

I need help? Please? ​

Chemistry
1 answer:
agasfer [191]3 years ago
3 0

Question: What is shown on the photo above?

Choices: A) An aquifer B) A sinkhole C) A watershed D) Karst topography

Answer: <u>It's C) A watershed because A. is where the water is underground, B. is a sinkhole and it has a big hole that is big or sometimes small, and D. Is where it has a little crack in it and it goes underground. </u>

<em>Hope this helps!.</em>

<em>~~~~~~~~~~~~~~~~~~~</em>

<em>~A.W~ZoomZoom44</em>

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A bowling ball is let go from a height of 30 cm. What is the velocity of the
marishachu [46]

Answer:

The answer is 0.30 m/s

Explanation:

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How many moles of CO2 are produced when 3.3 moles of C2H2 react
xxTIMURxx [149]
<span>To solve this exercise you need to know that to create CO₂ with C₂H₂ is necessary to have oxygen. So, the following balanced equation represents the reaction:
2C₂H₂(g) + 5O₂(g) → 4CO₂(g) + 2H₂O(g)

Notice that 2 moles of C₂H₂ form 4 moles of </span><span>CO₂, so if </span>3.3 moles of C₂H₂ react, how many moles of CO2 would be produced?
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5 0
3 years ago
What is the pH of a solution that has a hydroxide ion concentration of 1.0×10−9 M?
bogdanovich [222]

Answer:

\boxed{\text{pH = 5.00}}

Explanation:

Step 1. Calculate the pOH

pOH =-log[OH⁻]

pOH =-log(1.0 × 10⁻⁹)

pOH = 9.00

Step 2. Calculate the pH

pH + pOH = 14.00

pH + 9.00 = 14.00

\boxed{\textbf{pH = 5.00}}

7 0
3 years ago
Which of the following is a property of water a. polar molecule b. regulates temperature c.universal solvent d. all of the above
Vladimir [108]
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3 0
3 years ago
Read 2 more answers
I need help please this is due today
jonny [76]
Option B is correct. Average speed can be found through the equation speed = distance/time. Applying this to each person using the data in the chart:

Dennis’ speed: 60 ft/0.5 secs = 120 ft per sec

Johnny’s speed: 60 ft/0.45 secs = 133.333 ft per sec

Travis’ speed: 60 ft/0.52 secs = 115.38 ft per sec

Michael’s speed: 60 ft/0.48 secs = 125 ft per sec

As you can see, Johnny’s speed is the fastest at 133.333 ft/sec.

8 0
3 years ago
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