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Delicious77 [7]
3 years ago
9

Does anyone know the answer?????​

Chemistry
1 answer:
Juli2301 [7.4K]3 years ago
3 0

Answer:

In chemistry, pH (/piːˈeɪtʃ/) (abbr. power of hydrogen or potential for hydrogen) is a scale used to specify how acidic or basic a water-based solution is. Acidic solutions have a lower pH, while basic solutions have a higher pH.

Explanation:

that should answer ur question

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3 years ago
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The radioisotope phosphorus-32 is used in tracers for measuring phosphorus uptake by plants. The half-life of phosphorus-32 is 1
Harman [31]

Answer:

54 days

Explanation:

We have to use the formula;

0.693/t1/2 =2.303/t log Ao/A

Where;

t1/2= half-life of phosphorus-32= 14.3 days

t= time taken for the activity to fall to 7.34% of its original value

Ao=initial activity of phosphorus-32

A= activity of phosphorus-32 after a time t

Note that;

A=0.0734Ao (the activity of the sample decreased to 7.34% of the activity of the original sample)

Substituting values;

0.693/14.3 = 2.303/t log Ao/0.0734Ao

0.693/14.3 = 2.303/t log 1/0.0734

0.693/14.3 = 2.6/t

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t= 2.6/0.048

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3 0
3 years ago
a prescriber has ordered childrens motrin 400 mg po q6h for a child who weighs 60 kg. how many mg/kg is the child receiving
DedPeter [7]

Answer:

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Explanation:

400 mg / 60 kg = 6 2/3  mg/kg  per dose

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5 0
2 years ago
A substance has half the number of particles as 12 grams of carbon 12, how many moles are in the substance?
gavmur [86]

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7 0
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Which option is an example of physical change?
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Answer:

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Explanation:

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3 years ago
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