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KiRa [710]
4 years ago
12

Calculate the pH of the solution:

Chemistry
1 answer:
MatroZZZ [7]4 years ago
7 0

Answer:

c. 3.

Explanation:

pOH = -log(1x10^-11)

14-11 = 3 (pOH + pH = 14)

- Hope that helps! Please let me know if you need further explanation.

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I NEED HELP ASAPPPPPPPPPPPPPPPP
RoseWind [281]

Answer:

i wold think it is C

Explanation:

8 0
3 years ago
Read 2 more answers
A cube of ice melts in a beaker to form 10 g of water. What is the best estimate of the mass of the ice cube?
prohojiy [21]
I think the answer is 10g
when you freeze a specific amount of water into an ice cube, only the form and the density is changed, while the mass will be pretty much the same. 
Probably the mass of the melted water will be a little bit less than the cube (if count the mass that released to the air) , but the amount will NOT BE SIGNIFICANT.
6 0
3 years ago
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What is the difference between elements, mixtures, and compounds?
MAXImum [283]

Answer:

If it is pure, the substance is either an element or a compound. If a substance can be separated into its elements, it is a compound. If a substance is not chemically pure, it is either a heterogeneous mixture or a homogeneous mixture. If its composition is uniform throughout, it is a homogeneous mixture.

6 0
4 years ago
Which statement is not an example of intercellular communication?
bagirrra123 [75]

Answer:

D: A white blood cell produces antibodies.

Explanation:

Intercellular communication is defined as the process of communication that occurs between the two cells of the same organism.

Now, these two cells relate which each other when a signal reception receives a single molecule at a distance that could be short or long which in turn produces a cellular response.

Thus, looking at the options, the correct answer is Option D.

4 0
3 years ago
Lance is a 60-kg runner who, on a good day, runs at a speed of 5 m/s. What is his kinetic energy when he runs at this speed? *
Contact [7]

Answer:

His kinetic energy when he runs at that 5 m/s is 750 joules

Explanation:

The given information are;

The mass of, Lance, the runner = 60-kg

The speed by which Lance is running = 5 m/s

The kinetic energy, KE, is given by the relation;

KE = 1/2×m×v²

Where;

m = The mass = 60-kg

v = The instantaneous speed of motion = 5 m/s

The kinetic energy can be found by substituting the values of the variables in the kinetic energy equation as follows;

KE = 1/2 × 60 kg × (5 m/s)² = 750 joules

His kinetic energy when he runs at that 5 m/s is 750 joules.

7 0
3 years ago
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