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Yakvenalex [24]
2 years ago
12

Which of the following is

Chemistry
1 answer:
AleksandrR [38]2 years ago
6 0

Answer:

distance and time are needed to find velocity

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How hydrogen chloride gas is prepared on labrotary by conc sulpheric acid<br> ​
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It is prepared small amounts of hydrogen cloride for uses in the lab.

It can be  "generated in an HCl generator by dehydrating hydrochloric acid with either sulfuric acid or anhydrous calcium chloride."

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2 years ago
Which of the following elements has the lowest first ionization energy?
Tanya [424]

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(Sc)

Explanation:

7 0
3 years ago
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What involves 2 non metals ionic or covalent bonds
Juli2301 [7.4K]

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A bond forms between two non metals is covalent

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For example Chlorine Cl is a non metal bond in Cl - Cl is covalent

8 0
2 years ago
Earth’s inner core:_____ as Earth’s outer core:liquid
KatRina [158]

Answer:However, unlike the outer core, the inner core is not liquid or even molten. The inner core's intense pressure—the entire rest of the planet and its atmosphere—prevents the iron from melting. The pressure and density are simply too great for the iron atoms to move into a liquid state.

Explanation:please give brainliest

5 0
1 year ago
La densidad del óxido de magnesio. MgO, es de 3.581 g/cm3 El MgO, es de 3.581 g/cm3 El MgO cristaliza con ordenamiento cúbico co
Jobisdone [24]

Answer:

a=4.213cm

r=1.490x10^{-8}cm

Explanation:

Hola.

En este caso, para calcular la longitud (a) de una cara de celda unitaria, consideramos la siguiente ecuación:

\rho =\frac{#at*M}{a^3N_A}

En la que consideramos el número de átomos por celda (4 para FCC), la masa molar (40.3 g/mol para MgO) y el número de avogadro para obtener:

3.581g/mol = \frac{4atom/celda*40.3g/mol}{a^3*6.02x10^{23}atom/mol}

Despejando para a, obtenemos:

a^3 = \frac{4atom/celda*40.3g/mol}{3.581g/cm^3*6.02x10^{23}atom/mol}\\\\a=\sqrt[3]{7.478cm^3} \\\\a=4.213cm

Finalmente, el radio lo calculamos como:

r=\frac{\sqrt{2}*a}{4}=\frac{\sqrt{2}*4.213x10^{-8}cm}{4}\\\\r=1.490x10^{-8}cm

¡Saludos!

6 0
3 years ago
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