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Mars2501 [29]
2 years ago
5

Alex lives in Arizona. He plants flowers in a pot with new soil mixed with fertilizers, and he places the pot on his back porch.

The flowers receive lots of morning and afternoon sun each day. He waters the plant once that week. When he checks his plant later in the week, he notices that it is starting to turn brown. The plant is also starting to wilt. Which of the following is the reason for these changes in Alex's plant? A. The soil does not have enough nutrients to feed the plant. B. The plant is getting too much sunlight. C. It was too windy for the plant to stand straight. D. The plant has not received enough water.
Chemistry
2 answers:
Alex17521 [72]2 years ago
8 0

I think that your answer is D. I hope this helps you out! 3/13/2019

 Have a great day! :D

-wfz

Anuta_ua [19.1K]2 years ago
5 0
Since he’s watering it and it’s getting sun, i would say it’s because the soil isn’t rich enough and it doesn’t have the nutrients it needs for the plant to grow.
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Select the correct answer from each drop-down menu.
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Answer:

The granite block transferred <u>4080 joules</u> of energy, and the mass of the water is <u>35.84 grams</u>.

Explanation:

The equation needed to answer both parts of the question is:

Q = mcΔT

In this equation,

-----> Q = energy/heat (J)

-----> m = mass (g)

-----> c = specific heat (J/g°C)

-----> ΔT = change in temperature (°C)

<u>Part #1:</u>

First, you need to find the energy transferred from granite block using the previous equation. You have been given the mass, specific heat, and change in temperature.

Q = ? J                            c = 0.795 J/g°C

m = 126.1 g                     ΔT = 92.6 °C - 51.9 °C = 40.7 °C

Q = mcΔT

Q = (126.1 g)(0.795 J/g°C)(40.7 )

Q = 4080

<u>Part #2:</u>

Secondly, using the energy calculated in Part #1, you need to calculate the mass of the water. You have calculated the energy transferred, and have been given the specific heat and change in temperature.

Q = 4080 J                     c = 4.186 J/g°C

m = ? g                            ΔT = 51.9 °C - 24.7 °C = 27.2 °C

Q = mcΔT

4080 J = m(4.186 J/g°C)(27.2 °C)

4080 J = m(113.8592)

35.84 = m

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