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3 years ago

A sentence for desert

2 answers:

5 0

He knew he was in the desert when he saw the dust blowing and a cactus. /// He was trying to desert the field in which was dangerous.

Taya2010 [7]3 years ago

4 0

The desert was really hot. <--sand desert or. leaving something---> in the war, the people had to desert the land.

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Which diagram represents an electrically neutral atom?

Rom4ik [11]

Answer:

Explanation:

I hope this right, I'm sorry if it's not.

For an atom to be neutral, it has to have the same amount of protons and electrons. Because protons and electrons have opposite charges, when there is an equal amount of them they balance each other out

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3 years ago

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Which law relates to the ideal gas law?

ella [17]

Answer:

equation (4.16) depends on Boyle's law and Charles' law. The above relates the adjustment in perfect gas volume to the progressions in winning weight and temperature, separately. Moreover, equation (4.16) is alluded to as the condition of state for a perfect gas.

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3 years ago

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

Elena-2011 [213]

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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3 years ago

Which group (give the number) is characterized by 5 valence electrons in the configuration<br> s²p3?

Ivahew [28]

<h3>Answer:</h3>

Group 5A

<h3>Explanation:</h3>

Elements in the periodic table are arranged into columns known as groups and rows known as periods.
Elements in the same group share similar chemical properties.
For example, elements in group 5A have five valence electrons with the most high energy level with a configuration of s²p³.
Elements in group 5A include nitrogen and phosphorus among others.

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3 years ago

At the melting point of a substance, temperature ______ as heat is being added and the substance is changing from a solid to a l

madam [21]

The temperature Increases

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3 years ago

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