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4 years ago

13

63 84/ 85 86 87/ 88 891 901 911 921

1 answer:

Sergeeva-Olga [200]4 years ago

5 0

Answer: I have no way of answering this ,let alone give you the right answer

Explanation: You din't even tell us what the Q is

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Cuales son los nombres de la distribución de los electrones en un átomo ?

cluponka [151]

Un nombre es configuración de los electrones. Lo siento, no sé más nombres

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3 years ago

Please help me.<br> Thank you!

Katarina [22]

Answer: Positive

Explanation: Just a guess

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3 years ago

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Compare amplitudes, wavelengths, and frequencies of waves

mr_godi [17]

Answer:

The answer is option b.

Explanation:

Amplitude is the distance apart each wave is.

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3 years ago

radioisotope actinium 225 has half life of 10 days, I begin with 16 kg of this isotope, how much will remain after 40 days?

Igoryamba

$N(t)=N_{0}(\frac{1}{2})^\frac{t}{\tau_{_\frac{1}{2}}}}\\\\
N_{0}=16kg\\
t=40days\\
\tau_{_\frac{1}{2}}}=10days\\\\\\
N(t)=16kg*(\frac{1}{2})^{\frac{40}{10}}=16kg*\frac{1}{16}=1kg$

3 0

3 years ago

HC1 solution is mostly water. NaOH solution is mostly water. When 50mL of HC1 is mixed with 50mL of NaOH, what is the final mass

elixir [45]

Since water has a density of about 1g/mL, and we are assuming HCl and NaOH are mostly water, the total mass of the 2 solutions is 100 g.
Due to the conservation of mass, the mass of product must equal the total mass of reactant, therefore the final mass must also be 100 g.

5 0

4 years ago