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AlekseyPX
1 year ago
11

Which of the following could cause a change in state from a liquid to a solid?

Chemistry
1 answer:
crimeas [40]1 year ago
7 0

Increases the pressure          l

_____________________

Removing Energy                    l

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Which of the below elements are part of a group? Feel free to use the periodic table.
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M = Sr (strontium)

<em>Step 1.</em> Calculate the <em>moles of CO_2</em>.

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<em>Step 2</em>. Calculate the <em>moles of MCO_3</em>.

Moles of MCO_3 = 0.008 975 mol CO_2 × (1 mol MCO_3/1 mol CO_2)

= 0.008 975 mol MCO_3

<em>Step 3</em>. Calculate the molar mass of <em>MCO_3</em>

MM = grams/moles = 1.324 g/0.008 75 mol = 147.5 g/mol

<em>Step 4</em>. Calculate the <em>atomic mass of M</em>

M_r = <em>x</em> + 12.01 + 3×16.00 = <em>x</em> + 60.01 = 147.5

<em>x</em> = 147.5 – 60.01 = 87.5

<em>Step 5. Identify M</em>.

The element with the closest atomic mass is Sr (A_r = 87.6).

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We don't have all the information we need to plug the values into the equation. We still need to know how many moles 55.0 grans of neon is.

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Now that we have all the information we need, plug everying into the equation. In case you don't know, the Ideal Gas Law Equation is PV= nRT.

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