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Dmitry_Shevchenko [17]
3 years ago
9

How many protons are in an element with an atomic number of 8 and a mass of 18?

Chemistry
2 answers:
lesantik [10]3 years ago
8 0
B.8 because protons are the same as electrons and the atomic number.

Hoped I helped!
Pachacha [2.7K]3 years ago
4 0
B: 8 the amount of protons is equal to the atomic number
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A 15.0 mL urine from a dehydrated patient has a density of 1.019g/mL. What is the mass of the sample, reported in mg?
oee [108]

Answer:

Mass of sample in mg = 15,285 mg

Explanation:

Given:

Volume of urine sample = 15 ml

Density of sample = 1.019 g/ml

FInd:

Mass of sample in mg

Computation:

Mass = density x volume

Mass of sample in mg = Volume of urine sample x Density of sample

Mass of sample in mg = 1.019 x 15

Mass of sample in mg = 15.285 gram

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Mass of sample in mg = 15,285 mg

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Anastaziya [24]

Answer:

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Explanation:

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3 years ago
What is the pH of a solution with a concentration of 1.8 × 10-4 molar H3O+?
Andre45 [30]
PH is defined as the negative log of Hydrogen ion concentration. Mathematically we can write this as:

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Therefore, the pH of the solution will be 3.745
8 0
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In order to calculate the number of neutrons you must subtract the what from the what?​
Katyanochek1 [597]

Answer:

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6 0
3 years ago
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