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Rom4ik [11]
4 years ago
9

This statement demonstrates that ionic bonds create substances that have ________ properties than the elements that created them

.
Chemistry
1 answer:
nignag [31]4 years ago
4 0
"different" should be the word in the blank
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What are two ways in which density has practical importance?
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<span>density is how much matter is packed into one area. so the higher density the more likely it is to be heavier. for example, cork has a very low density and iron has a higher density.</span>
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3 years ago
Sodium and magnesium ions have 10 electrons surrounding their nuclei which ion would you expect to have the larger radius why
Maksim231197 [3]
Sodium because according to the atomic size trend of the periodic table. Elements further to the left are bigger while elements tot he right are smaller. This is also do to their charges, Na has a +1 charge meaning it doesn’t pull the electrons as close as the Mg does with its +2 charge.

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If the temperature of an object is 335K,how would his be expressed on the celsius scale ?
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4 years ago
Read 2 more answers
Solid sodium reacts violently with water, producing heat, hydrogen gas, and sodium hydroxide. How many molecules of hydrogen gas
Butoxors [25]
<span>Answer: 1.06 moles of molecules = 6.38x10²³ molecules
</span><span />

<span>Explanation:
</span><span />

<span>1) Balanced chemical equation:
</span><span />

<span>2Na + 2H₂O -> 2NaOH + H₂
</span><span />

<span>2) Mole ratios:
</span><span />

<span>2 mol Na : 2 mol H₂O : 2 mol NaOH : 1 mol H₂
</span><span />

<span>3) Convert 48.7 g of sodium to moles:
</span><span />

<span>number of moles = mass in grams / molar mass
</span><span />

<span>molar mass of Na = atomic mass = 23.0 g/mol


</span><span>number of moles = 48.7g / 23.0 g/mol = 2.12 moles of Na</span>
<span /><span>
4) Proportion:
</span><span />

<span>2moles Na/1mol H₂ = 2.12 moles Na / x
</span><span />

<span>x = 2.12 moles Na * 1 mol H₂ / 2 moles Na = 1.06 moles H₂.
</span><span />

<span>5) If you want to convert that to number of molecules you have to multiply by Avogadro's number: 6.022 x 10^²³
</span><span />

<span>1.06 mol x 6.022x10^²³ molecules/mol = 6.38x10²³ molecules</span>
8 0
3 years ago
What is a coordinate covalent bond?
Mnenie [13.5K]

Answer:

option A is correct a bond formed by transfer of electron

4 0
4 years ago
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