Given the balanced equation:AgNO3(aq) + NaCl(aq) → NaNO3(aq) + AgCl(s)
This reaction is classified as

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Answer 1

Answer:

Answer:

ahhh....Double displacement reaction or precipitation reaction.(both are correct im not guessing)

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A sample of an element is malleable and can conduct electricity. This element could be(1) H (3) S(2) He (4) Sn
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Determine the mass of hydrogen chloride needed to react completely with 12.8 g of aluminum to produce aluminum chloride and hydrogen gas.

Answers

Taking into account the reaction stoichiometry, 51.84 grams of HCl is required to react completely with 12.8 g of aluminum to produce aluminum chloride and hydrogen gas.

Reaction stoichiometry

In first place, the balanced reaction is:

2 Al + 6 HCl → 2 AlCl₃ + 3 H₂

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

Al: 2 moles
HCl: 6 moles
AlCl₃: 2 moles
H₂: 3 moles

The molar mass of the compounds is:

Al: 27 g/mole
HCl: 36.45 g/mole
AlCl₃: 133.35 g/mole
H₂: 2 g/mole

Then, by reaction stoichiometry, the following mass quantities of each compound participate in the reaction:

Al: 2 moles ×27 g/mole= 54 grams
HCl: 6 moles ×36.45 g/mole= 218.7 grams
AlCl₃: 2 moles ×133.35 g/mole= 266.7 grams
H₂: 3 moles ×2 g/mole= 6 grams

Mass of HCl required

The following rule of three can be applied: If by reaction stoichiometry 54 grams of Al react with 218.7 grams of HCl, 12.8 grams of Al react with how much mass of HCl?

$mass of HCl=(12.8 grams of Alx 218.7 grams of HCl)/(54 grams of Al)$

mass of HCl= 51.84 grams

Finally, 51.84 grams of HCl is required to react completely with 12.8 g of aluminum to produce aluminum chloride and hydrogen gas.

Learn more about the reaction stoichiometry:

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first write out the eqn, and balance it.

next, take 12.8g/mr of aluminium
this will give u the mols of aluminium

next, take the ratio of HCL and Al, compare and find the mols of HCL.

take the mols of HCL/mr of HCL to give u mass

doneee

What is the electron structure of nitrogen?1s22s22p3
1s22s23s22p1
1s32s32p1
1s12s12p5

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Answer : The correct option is, $1s^22s^22p3$

Explanation :

Electronic configuration : It is defined as the arrangement of the electrons of an atom in an atomic orbital.

The given element is, nitrogen.

The nitrogen element belongs to group 15 and the atomic number of nitrogen is 7.

As we know that the number of electrons is equal to the number of atomic number.

The number of electrons present in nitrogen = 7

Thus, the electronic configuration of nitrogen is, $1s^22s^22p3$

1s22s22p3 considering N is the third element in the 2nd P sublevel

With #27. if you can do at least two and explain how

THANK YOU

Answers

KOH - Potassium hydroxide (The compound for potassium is K, hence the first part, and OH is for hydroxide so when you put them together it makes potassium hydroxide.. pretty self explanatory)
Ca(NO3)2 - Calcium nitrate (The symbol for calcium is Ca, next is NO which is nitrate and the 3 means that there are 3 Nitrate compounds..I am not 100% sure what the 2 means at the end, but I am guessing it means that there are 2 calcium nitrate compounds in all.)
MgCO3 - Magnesium carbonate
Na3PO4 -Trisodium phosphate
LiNO3 - Lithium Nitrate
Mg(C2H3O2)2 - Magnesium acetate

Alright, so to do this, you need to know the name of the elements and compounds, since all of these are ionic compounds which have different naming rules than covalent compounds, all you need is a periodic table and an ion chart. I'll do the first column.

A. Calcium Nitrate

B. Potassium Hydroxide

C. Magnesium Carbonate.

I also am including a picture of an ion chart that include almost all of the ions to help you with the rest of them.

How does adding salt affect the freezing point of water?

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One of the colligative properties of water is the freezing point depression. A colligative property is a change in the property of water due to some amount of solute. Adding salt will lower down the freezing point of water which means that more heat would be needed to bring the boil to freeze.

When adding salt, the more you add the freezing point drops. The sodium and chlorine ions from the salt get in the way of the water molecules. This makes it harder for them to be rearranged into crystals. Salt prevents ice from staying solid because it raises the temperature .

Select all that apply.The requirements for one type of atom to substitute for another in a solid solution are:

All substitutions must be limited to the same element.
An atom must be identical in size.
An atom must be similar in size.
The substituting atom must be from the same period.
The substituting atom must be from the same group.

Answers

Ans: C) and E)

A solid solution is essentially a multicomponent system which is composed of a mixture of two or more elements sharing the same crystal lattice. Alloys are solid solutions.

The requirement for one type of atom to substitute for another in a solid solution are two fold

1) The atom must be similar in size

2) The substituting atom must be from the same group.

The requirements for one type of atom to substitute for another in a solid solution are that "An atom must be similar in size." Although of course there are sometimes exceptions.

What is the purpose of the ligaments?A Attach muscle to muscle

B Attach muscle to bone

C Attach bone to bone

DAttach bone to blood vessels