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yawa3891 [41]
4 years ago
14

What’s the molar mass of Rb3n

Chemistry
1 answer:
Salsk061 [2.6K]4 years ago
4 0

Answer:

147.473 g/mol

Explanation:

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Una disolución contiene 50 gramos de KOH en 0.25 L de Determine la Molaridad de la disolución
snow_tiger [21]

Answer:

1. 3.56 M.

2. 0.99 M.

Explanation:

¡Hola!

1. En este caso, dado que la molaridad de una solution es calculada por medio de la siguiente ecuación:

M=\frac{n}{V}

Es posible calcular la molaridad de 50 gramos de hidróxido de potasio primero calculando las moles en dicha masa por medio de la masa molar:

n=50.0gKOH*\frac{1molKOH}{56.11gKOH}=0.891molKOH

Luego, dado el volumen de la solución, podemos calcular la molaridad:

M=\frac{0.891mol}{0.25L}=3.56M

2. En este segundo ejercicio, procedemos de la misma manera, pues primero calculamos las moles de nitrato de potasio:

n=75gKNO_3\frac{1molKNO_3}{101.1gKNO_3}=0.742mol

Luego, calculamos la molaridad justo como se hizo anteriormente:

M=\frac{0.742mol}{0.35L} \\\\M=0.99M

Best regards!

3 0
3 years ago
How did rutherford's experimental evidence lead to the development of a new atomic number
borishaifa [10]
Rutherford's experiment was the gold foil experiment.

The gold foil experiment was him shooting alpha particles (you could think of this as a Helium atom without its electrons) into a gold foil. The whole experiment was surrounded with something called Zinc Sulfide which sparked when the alpha particles hit it.

Most of the alpha particles went through, approximately 1 in 8000 alpha particles deflected at a large angle (almost right back to where it was shot).

This constant ratio caused him to conclude that:-the atom was mostly empty space (since most alpha particles went through)-there was something very positive in the atom (the proton)-the proton was very dense (since it made something going light speed deflect back at a large angle)-The proton was also very small (since only 1 in 8000 hit it)

Prior to the discovery of the proton, John Dalton's periodic table was used. Having "elements" such as soda and potash. Now that we have discovered the proton and found out that each atom's number of protons is unique, we used that to classify each element's identity.
8 0
4 years ago
The energy from the sun, in the form of light, hits the earth through the process of radiation. when the light is absorbed by ea
harina [27]
Answer:
C. Conduction
4 0
4 years ago
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Which is an example of ionization?
Reptile [31]
Ionization is a formation of ions from neutral atoms or molecules.

SO₂ + H₂O = HSO₃⁻ + H⁺

Mg(OH)₂ = Mg²⁺ + 2OH⁻
3 0
3 years ago
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2 KClO3 (s) → 2 KCl (s) + 3 O2 (g)<br> how many atoms are in 3.2 moles of KCl?
Gekata [30.6K]

Answer:

If u use math why It will give u the answer like 3x3=9

Explanation:

4 0
3 years ago
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