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1 month ago

Put the following elements into five pairs of elements that have similar chemical reactivity: F, Sr, P, Ca, O, Br, Rb, Sb, Li, S

Chemistry

1 answer:

Anarel [2.9K]1 month ago

7 0

Explanation:

Elements provided:

F, Sr, P, Ca, O, Br, Rb, Sb, Li, S

Elements sharing similar reactivity belong to the same group in the periodic table, indicating that those in the same column exhibit comparable reactivity. Here are the identified groupings:

Li and Rb are alkali metals in group 1

Ca and Sr are alkaline earth metals in group 2

F and Br are halogens in group 7

O and S belong to group 6

P and Sb are classified in group 5 of the periodic table

Thus, these classifications illustrate elements with the same chemical characteristics.

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Answer:

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Explanation:

Given:

Mass of the solid sphere (m) = 6.1 kg

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To find the volume of the liquid:

$Volume(V)=\frac{Mass(m)}{Density (\rho)}$

Volume of the sphere can be calculated as 6.1 kg / 2600 kg/m³ = 0.002346 m³.

According to Archimedes' principle, the volume of water displaced is equal to the volume of the sphere.

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Referencing the free-body diagram of the sphere shown in the image:

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$6.1\times 9.81=\rho\times 9.81\times 0.002346+26$

$33.841=\rho\times 9.81\times 0.002346$

$\rho=\frac{33.841}{9.81\times 0.002346}$

$\rho=1470.43 kgm^3$

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