3 years ago

A phase diagram identifies the state of matter of a substance for specific combinations of _____.

Chemistry

2 answers:

zalisa [80]3 years ago

8 0

Temperature and Pressure

Hope this helps!!

-Lili<3

son4ous [18]3 years ago

4 0

the answers going to be tempture and pressure

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Calcium oxide or quicklime (CaO) is used in steelmaking, cement manufacture, and pollution control. It is prepared by the therma

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Answer:

The yearly release of $CO_2$ into the atmosphere is $6.73\times 10^{10} kg$ .

Explanation:

$CaCO_3(s)\rightarrow CaO(s) + CO_2(g)$

Annual production of CaO = $8.6\times 10^{10} kg=8.6\times 10^{13} g$

Moles of CaO :

$\frac{8.6\times 10^{13} g}{56 g/mol}=1.53\times 10^{12} moles$

According to reaction, 1 mole of CaO is produced along with 1 mole of carbon-dioxide.

Then along with $1.53\times 10^{12} moles$ of CaO moles of carbon-dioxide moles produced will be:

$\frac{1}{1}\times 1.53\times 10^{12} moles=1.53\times 10^{12} moles$ of carbon-dioxide

Mass of $1.53\times 10^{12}$ moles of carbon-dioxide:

$1.53\times 10^{12}mol\times 44 g/mol=6.73\times 10^{13} g =6.73\times 10^{10} kg$

The yearly release of $CO_2$ into the atmosphere is $6.73\times 10^{10} kg$ .

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that is a true statement

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The number of _______ in an atom of an element is the element's atomic number.

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The number of: Protons.

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Which molecules show an appropriate number of bonds around each carbon atom? select the three that apply.the shape of molecules

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I believe that the best answer among the choices provided by the question is <span>he shape of molecules the three dimensional shape or configuration of a molecule is an important characteristic. this shape is dependent on the preferred spatial orientation of covalent bonds to atoms having two or more bonding partners.</span>
Hope my answer would be a great help for you. If you have more questions feel free to ask here at Brainly.

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