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3 years ago

HELP ME!!!!! WILL MARK BRAINLIEST

Chemistry

2 answers:

Vedmedyk [2.9K]3 years ago

6 0

11111ijbhggffdrt vid

Artyom0805 [142]3 years ago

3 0

e. ice changed to gas

f.the specific heat of vaporisation is greater than heat of fusion because eventually all the ice changed to gas it becomes vaporisation

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Determine which of the following contains the greatest mass of aluminium: 122 g of AlPO4, 266 g of A12C16, or 225 g of

pav-90 [236]

Answer : The $Al_2S_3$ contains the greatest mass of aluminum.

Explanation :

For $AlPO_4$ :

Molar mass of $AlPO_4$ = 122 g/mole

Molar mass of aluminium = 27 g/mole

As, 122 g of $AlPO_4$ contains 27 g of Al

So, 122 g of $AlPO_4$ contains $\frac{122}{122}\times 27=27g$ of Al

The mass of 'Al' in $AlPO_4$ is, 27 grams.

For $Al_2Cl_6$ :

Molar mass of $Al_2Cl_6$ = 266.7 g/mole

Molar mass of aluminium = 27 g/mole

As, 266.7 g of $Al_2Cl_6$ contains $2\times 27g$ of Al

So, 266 g of $Al_2Cl_6$ contains $\frac{266}{266.7}\times 2\times 27=54g$ of Al

The mass of 'Al' in $Al_2Cl_6$ is, 54 grams.

For $Al_2S_3$ :

Molar mass of $Al_2S_3$ = 150 g/mole

Molar mass of aluminium = 27 g/mole

As, 150 g of $Al_2S_3$ contains $2\times 27g$ of Al

So, 225 g of $Al_2S_3$ contains $\frac{225}{150}\times 2\times 27=81g$ of Al

The mass of 'Al' in $Al_2S_3$ is, 81 grams.

Hence, from this we conclude that $Al_2S_3$ contains the greatest mass of aluminum.

5 0

3 years ago

In addition to interhalogen compounds, many interhalogen ions exist. Would you expect interhalogen ions with a 1+ or a 1- charge

VMariaS [17]

There is one electron in the valence shell of every halogen. Two halogen atoms join together to form a covalent connection (sharing one electron each). Thus, inter-halogen compounds with 1+ or a 1- charge contain an even number of atoms.

An interhalogen compound is a molecule with no atoms from any other group of elements and two or more different halogen atoms (fluorine, chlorine, bromine, iodine, or astatine). The majority of interhalogen chemicals are binary (composed of only two distinct elements).

Learn more about interhalogen compounds here:

brainly.com/question/13959854

#SPJ4

7 0

2 years ago

if you add 4.21 mL of solution from a buret into a flask that already contained 80.4 mL of solution, what is the total volume of

NNADVOKAT [17]

Answer:

84.6 mL

Explanation:

To get the total volume of soultion we must add the given volumes together.

4.21 mL + 80.4 mL = 84.6 mL

5 0

4 years ago

Measuring levels of pollutants, such as nitrogen oxide in the atmosphere, is an example of chemistry research that ____.

Paraphin [41]

Answer:

aims to benefit the environment is the correct answer.

Explanation:

The goal of Aims to the benefits environment is to provide everyone information, values, and skills which are required to preserve and protect the environment.

Aims to benefit the environment includes

To decrease emissions and reduce pollution.

To improve waste management methods.

To reduce the consumption of natural sources.

To minimize noise and different nuisances.

3 0

3 years ago

How many electrons fit in the part of the third energy level shown

makkiz [27]

Answer:

18 electrons

Explanation:

Note: The third energy level can actually hold up to 18 electrons, so it is not really filled when it has 8 electrons in it.

5 0

3 years ago