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2 years ago

URGENT!!!!!

Chemistry

1 answer:

Nikitich [7]2 years ago

6 0

Answer:

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As white light passes through a prism, the light is ____ A. Reflected B. Refracted

noname [10]

Answer:

Refracted

Explanation:

White light refracts when it passes through a prism. Each wavelength refracts at a different angle, and the emergent light forms a rainbow.

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2 years ago

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How many moles of boron (B, 10.81 g/mol) are in 37.8 grams of boron? [?] moles

madreJ [45]

Answer:

37.8g/ 10.81g/mol = 3.4968...moles

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2 years ago

An ionic solid is placed in water. which information is described by the solubility product constant?

Illusion [34]

Answer:

$\boxed{\text{C. the equilibrium between the solid and its ions in solution}}$

Explanation:

$\rm MX(s) $\, \rightleftharpoons \,$ M$^{+}$(aq) + $^{-}$(aq); $K_{\text{sp}}$ = [M$^{+}$][X$^{-}$]\\\\\text{$K_{\text{sp}}$ gives us information on}\\\\\boxed{\textbf{ the equilibrium between the solid and its ions in solution}}$

It tells us nothing about the amount of precipitate that will form or the temperature at which the equilibrium occurs.

8 0

3 years ago

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Cuántos gramos de hidróxido de sodio (NaOH) se debe de agregar a un litro de agua para obtener una disolución al 25% en masa

Tamiku [17]

Answer:

= 250 gramos

Explanation:

No ha preguntado sobre peso / peso o peso / volumen.

Para w / v:

Simplemente tome el 25% de 1000 y luego agréguelo en 1L de agua

La masa de NaOH necesaria es de 250 g.

Para w / w:

250 gramos de NaOH y 750 g de agua, hará que la solución sea 1L.

5 0

2 years ago

What is the volume of 15.2 grams of SO2 at STP?

kiruha [24]

5.512 litres is the volume of 15.2 grams of sulphur dioxide gas at STP.

Explanation:

Data given:

mass of sulphur dioxide = 15.2 grams

conditions is at STP whech means volume = 22.4 litres

atomic mass of sulphur dioxide = 64.06 grams/mole

Number of moles is calculated as:

number of moles = $\frac{mas}{atomic mass of 1 mole}$

Putting the values in the equation:

number of moles = $\frac{15.2}{64.06}$

= 0.23 moles

Assuming that sulphur dioxide behaves as an ideal gas, we can calculate the volume as:

When 1 mole of sulphur dioxide occupies 22.4 litres at STP

Then 0.23 moles of sulphur dioxide occupies 22.4 x 0.23

= 5.152 litres is the volume.

5 0

3 years ago