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3 years ago

What does the chemical formula cacl2 show about the compound it represents?

Chemistry

2 answers:

Anna [14]3 years ago

7 0

A chemical formula that indicates the kinds of atoms and the number of each kind in a molecule of a compound.

ZanzabumX [31]3 years ago

7 0

Answer:

The compound represents that calcium chloride is an ionic salt made up of 1 calcium ion and 2 chloride ions.

Explanation:

The given chemical formula $CaCl_2$ is of calcium chloride salt.

The chemical formula represents that 1 atom calcium binds with two atoms of chlorine to form a single molecule of calcium chloride.

It is an ionic salt made up 1 calcium ion and 2 chloride ions.

Calcium has atomic number of 20 and chlorine has atomic number of 17. Calcium will loose 2 electrons to gain noble gas stability whereas chlorine atom will gain 1 electron to gain noble gas stability.

$[Ca]=[Ar]4s^2$

$[Ca^{2+}]=1s^22s^2p^63s^23p^6$

$[Cl]=1s^22s^2p^63s^23p^5$

$[Cl^{-}]=1s^22s^2p^63s^23p^6$

$Ca^{2+}+2Cl^-\rightarrow CaCl_2$

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Which of the following groups of elements are likely to be radioactive? (5 points) a Actinides b Noble gases c Transition metals

Nataly [62]

Answer:

Actinides

Explanation:

They are defined as "any of the series of fifteen metallic elements from actinium (atomic number 89) to lawrencium (atomic number 103) in the periodic table. They are all radioactive, the heavier members being extremely unstable and not of natural occurrence"

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3 years ago

Pickles are cucumbers preserved in a brine solution containing dill, alum, and salt. Cucumbers shrink to a fraction of their nor

Anna [14]

Answer:

hypertonic solution

Explanation:

Hypertonic solution -

It is the solution, with more amount of solute than the solvent , is known as hypertonic solution.

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3 years ago

What is the top of a transverse wave

Andru [333]

It would be called the crest.

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~Brooke❤️

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4 years ago

An ideal gas in a sealed container has an initial volume of 2.80 L. At constant pressure, it is cooled to 18.00 °C, where its

Aleks04 [339]

Answer:

$T_1=-91.18\°C$

Explanation:

Hello there!

In this case, given the T-V variation, we understand it is possible to apply the Charles' law as shown below:

$\frac{T_1}{V_1}= \frac{T_2}{V_2}$

Thus, since we are interested in the initial temperature, we can solve for T1, plug in the volumes and use T2 in kelvins:

$T_1= \frac{T_2V_1}{V_2}\\\\T_1= \frac{(18.00+273.15)K(1.75L)}{(2.80L)}\\\\T_1=182K-273.15\\\\T_1=-91.18\°C$

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3 years ago

Need help please please

MatroZZZ [7]

Answer:

1) 4

2) 1/9

3) 46.5

4) 5.8

Explanation:

Density= Mass/Volume

1) D=24/6=4

2) D=1/9=0.11

3) D=2000/43=46.5

4) D=75/13=5.8

7 0

3 years ago