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3 years ago

Which elements have the most similar chemical properties? Si, As, and Te N2, O2, and F2 Mg, Sr, and Ba Ca, Cs, and Cu

1 answer:

8 0

The elements that have the most similar chemical properties are those that have the same number of valence electrons. Elements with the same number of valence electrons can be found in the same column or "group" on the periodic table. The elements that satisfy this criterion are Mg, Sr, and Ba.

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3 years ago

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3 years ago

Read 2 more answers

The density of ice is 917 kg/m3. The density of salt water is 1029 kg/m3. A mass of ice is 2.55 x 1013 kg. Calculate the volume

Ksju [112]

Answer:

Volume of salt water, $V_{sw} = 247.74 km^3$

Explanation:

Density of Ice, $\rho_{ice} = 917 kg/m^3$

Density of salt water, $\rho_{sw} = 1029 kg/m^3$

Volume of ice, $V_{ice} = 278 km^3$

Volume of salt water, $V_{sw} = ?$

Mass = Density * Volume

Mass of Ice, $m_{ice} = \rho_{ice}V_{ice}$

Mass of Salt water, $m_{sw} = \rho_{sw}V_{sw}$

Since , $m_{ice} = m_{sw}$

$\rho_{ice}V_{ice} = \rho_{sw}V_{sw}\\\\(917*278) = (1029*V_{sw})\\\\V_{sw} = \frac{254926}{1029} \\\\V_{sw} = 247.74 km^3$

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4 years ago

If the half life of a radioactive isotope is 4000 years, how much would be left in a fossil after 4000 years

mamaluj [8]

Since the half life of the radioactive isotope is 4,000 years, after 4,000 years the amount of the isotope would decrease by half. (Hence the name, half life.) So, after 4,000 years, there would be half of the isotope left in the fossil.

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3 years ago