Chemistry, 26.11.2020 07:00 zahrast14

The mass of an object is 32g and its density is 17g /mL. what is its volume

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Answer from: jdsfdujfi1598

$\boxed {\boxed {\sf v \approx 1.88 \ mL}}$

Explanation:

The density formula is:

$d=\frac{m}{v}$

If we rearrange the formula for volume, the result is:

$v=\frac{m}{d}$

The mass of the object is 32 grams. The density is 17 grams per milliliter.

$m= 32 \ g\\d= 17 \ g/mL$

Substitute the values into the formula.

$v=\frac{32 \ g}{17 \ g/mL}$

Divide. Note that the grams, or g, will cancel each other out.

$v=\frac{32 }{17 \ mL}$

$v=1.88235294 \ mL$

Let's round to the nearest hundredth to make the answer more concise.

The 2 in the thousandth place tells us to leave the hundredth place as is.

$v \approx 1.88 \ mL$

The volume of the object is about 1.88 milliliters.

Answer from: Quest

pie chart because it is in percents ( % )

Answer from: Quest

assuming that your periodic table has eighteen columns, you should highlight the four elements in the third column from the left of the table.

explanation

neutral atoms of elements after calcium contain d electrons. the energy of d orbitals of a particular main shell lies between the energy of the s and p orbitals of the next main shell. for example, electrons in the $3d$ have energy higher than those in the $4 s$ orbital while lower than those of the $4 p$ orbital.

by the aufbau principle, electrons fill orbitals one at a time, starting from those of the lowest energy. the $4s$ orbital is therefore filled right after $3p$ orbitals and before $3 d$ orbitals.

potassium has electron configuration $[\text{ar}] 4 s^{1}$ and calcium $[\text{ar}] 4 s^{2}$ . the s orbital of a main shell holds a maximum of two electrons. the next element would thus have the electron configuration $[\text{ar}] 4 s^{2} \; 3d^{1}$ and satisfy the requirements.

a neutral atom of the element contains three electrons on top of the most recent noble gas element. it should thus be placed in the third column of the periodic table. both scandium and yttrium would satisfy the conditions. an aufbau diagram indicates that the 4f orbital is filled before the 5d. however, it appears that exceptions exists for both lanthanum and actinium. neutral atoms of the two d-block elements also demonstrate the $ns^{2} \; (n-1) p^{1}$ and should be highlighted as well.

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The mass of an object is 32g and its density is 17g /mL. what is its volume...

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