Calculate the mass percent composition of sulfur in Al2(SO4)3.

Answers

Answer 1

Answer: The molar mass of aluminum sulftae is 342.14 g/mol.

Since the subscript shows that there are 3 sulfurs within the substance, the total mass of sulfur is 96.21g/mol

Now take the mass of the sulfur and divide it by the molar mass of aluminum sulfate, then multiply by 100:
(96.21/342.15)(100) = 28.1% mass composition of sulfate

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What is the net ionic equation? (This is already balanced, just need the net ionic) 2CH3COOH(aq)+ Sr(OH)2(aq)----> Sr(CH3COO)2(aq)+2H2O(l)

Answers

Net ionic equation should be like this :
CH3COOH(aq) + OH- --> CH3COO- + H2O(l)
According to the fact that acetic acid is too weal and non-ionized, put CH3COOH, Sr(OH)2 is not so strong but can dissolve therefore can ionize.

A 3.0 M HCl(aq) solution contains a total of(1) 3.0 grams of HCl per liter of water
(2) 3.0 grams of HCl per mole of solution
(3) 3.0 moles of HCl per liter of solution
(4) 3.0 moles of HCl per mole of water

Answers

Answer : The correct option is, (3) 3.0 moles of HCl per liter of solution

Explanation :

Molarity : It is defined as the number of moles of solute present in one liter of the solution. The S.I unit of molarity is mole per liter.

It is represented as,

$Molarity=\frac{\text{Moles of solute}}{V_(solution)(L)}$

where,

V = volume of solution in liter

As we are given 3.0 M HCl(aq) solution this means that 3.0 moles of HCl present in one liter of solution.

Hence, a 3.0 M HCl(aq) solution contains a total of 3.0 moles of HCl per liter of solution.

Molarity = number of moles / volume in liters solution

Answer (3)

hope this helps!

What is the symbol for iron?
a. I
b. F
c. Ir
d. Fe

Answers

The symbol for iron is Fe. Iron is an element with an atomic number of 26 and belongs to the group of metals in the first transition series. It is the most common and known element in the Earth's crust. It is very abundant in rocky planets which includes the Earth.

In the doorbell configuration, describe what is initiated when someone presses the button outside your home.

Answers

Answer:

When the bell is rung the switch closes allowing electricity to flow making the hammer hit the bell, making the sound to alert people in the house.

Explanation:

The process where bacteria takes nitrogen out of the air and makes it usable for other organisms is called

Answers

Answer:

The process is called Nitrogen fixation

Explanation:

The nitrogen fixation is a process carried out by some prokaryotic microorganisms (bacteria), specifically those have the presence of the nitrogenase enzyme. The bacteria absorb the atmospheric nitrogen (N2) from the roots of plants, and the nitrogenase enzyme, with the help of two proteins that act as electron donors and acceptors (nitrogenase complex) reduce the nitrogen to ammonia (NH3), then the ammonia is ionized to NH4+ (ammonium). Followed by that, the ammonia is oxidated to nitrates and nitrites, which are finally absorbed again by plants.

Someone help!! ( alkenes )

Answers

2.1) An unsaturated molecule is one that has double bonds

The two molecules with double bonds are B and E

2.2) The molecular formula for a molecule with a single double-bond is “CnH2n”

So it would be C4H8

2.3) I’m not sure what the answer to this one is, sorry...Oxidation maybe?

Other Questions

Where are the heavy metals located on the periodic table

Sand + water = Sand Sand solution

HELP ME with THIS I am time i have a little bit of time and still have more questions !!! CHEMISTRY!!

A geographical area where plants, animals, the landscape and the climate all interact together is called a(n)environment. ecosystem. biome. food web.