What is the mass of 0.25 mole of sodium?

Answer:

She will have an active imagination.

Explanation:

I took the test and i got 90%

But this one is right, hope this helps ( :

Answer:

a

Explanation:

give the person above me brainlest :)

Answer:

False did the test on egde

Answer:

a. Molecular equation: AgNO₃(aq) + NaI(aq) ----> NaNO₃(aq) + AgI(s)

Net ionic equation: Ag⁺(aq) + I⁻ ---> AgI(s)

b. Molecular equation: Ba(NO₃)₂(aq) + K₂SO₄(aq) ----> 2KNO₃(aq) + BaSO₄(s)

Net ionic equation: Ba²⁺(aq) + SO₄²⁻(aq) ---> BaSO₄(s)

c. Mg(NO₃)₂ + K₂SO₄  ------> No reaction

d. CaCl₂ + AI(NO₃)₃ ----> No reaction

Note: The question is incomplete. A complete similar question is given below:

Write the molecular equation and the net ionic equation for each of the following aqueous reactions. If a reaction is not carried out, write NR after the arrow.

a. AgNO₃ + NaI⁻

b. Ba(NO₃)₂ + K₂SO₄

c. Mg(NO₃)₂ + K₂SO₄

d. CaCl₂ + AI(NO₃)₃

Explanation:

a. A double displacement reaction occur between aqueous solutions of silver nitrate and sodium iodide to give a precipitate of silver iodide.

Molecular equation: AgNO₃(aq) + NaI(aq) ----> NaNO₃(aq) + AgI(s)

Net ionic equation: Ag⁺(aq) + I⁻ ---> AgI(s)

b. A double displacement reaction occurs between aqueous solutions of barium nitrate and potassium sulfate to produce a precipitate of barium sulfate

Molecular equation: Ba(NO₃)₂(aq) + K₂SO₄(aq) -----> 2KNO₃(aq) + BaSO₄(s)

Net ionic equation: Ba²⁺(aq) + SO₄²⁻(aq) ---> BaSO₄(s)

c. Since no precipitate is formed when aqueous solutions of magnesium nitrate and potassium sulfate are mixed together, no reaction occurs

Mg(NO₃)₂ + K₂SO₄  ------> No reaction

d. Since no precipitate is formed when aqueous solutions of calcium chloride and aluminum nitrate are mixed together, no reaction occurs

CaCl₂ + AI(NO₃)₃ ----> No reaction

Answer:

The correct answer is "[tex]\frac{0.65}{V} \ percent[/tex]".

Explanation:

The given values are:

[tex]M_r=0.130 \ g[/tex]

[tex]M_o=20 \ g/L\times V(L)[/tex]

     [tex]=20 \ V[/tex]

As we know,

⇒ [tex]Recovery \ percent=\frac{Amount \ of \ substance \ recovered}{Amount \ of \ substance \ originally \ taken}\times 100[/tex]

On substituting the given values, we get

                                [tex]=\frac{0.130}{20 \ V}\times 100[/tex]

                                [tex]=\frac{0.65}{V} \ percent[/tex]

Note: percent = %

Answer:

Purple light.

Yellow light.

Explanation:

Answer: the correct answer would be the last option, C6H12O6 and O2

Explanation:

Answer: B. Volcanic eruption

Explanation:

A volcano is firmed when molten rocks is formed to the surface of the Earth. Volcanoes release molten rocks, ash, and gases to the Earth's surface.

Volcanoes are agents of change as the eruptions lead to the formation of new landforms and also destroy several things that they come in contact with.

Volcanic eruptions also occurs due to plate tectonics. Other events that happen due to plate tectonics also include earthquakes, and tsunamis.

Answer:B

Explanation:

Answer:

Chemical

Explanation:

Cause it is

Answer: It's D

Explanation:

Answer:

the law of conversation of mass States that mass is an isolated system is neither created or destroyed by chemical reactions or physical transformations. according to the law of conversation of mass the mass of the product in a chemical reaction must equal to the mass of reactants

hope It helped you

Answer:

C₃H₈ + 5 O₂ ⇒ 3 CO₂ + 4 H₂O

2 C₃H₈ + 10 O₂ ⇒ 6 CO₂ + 8 H₂O

Explanation:

The combustion reaction is when propane reacts to oxygen to form a compound of carbon and water. If the product of carbon is carbon dioxide, the combustion is called complete. Let's considered the unbalanced combustion reaction.

(Note: I assume is C₃H₈, propane, because C₃H₁₈ doesn´t exist).

C₃H₈ + O₂ ⇒ CO₂ + H₂O

We will start balancing C and H that are just in 1 compound on each side, and finally we will balance O atoms. One way to do so is:

C₃H₈ + 5 O₂ ⇒ 3 CO₂ + 4 H₂O

We can get a different way of balancing the equation if we, for instance, multiply all the stoichiometric coefficients by 2.

2 C₃H₈ + 10 O₂ ⇒ 6 CO₂ + 8 H₂O

Answer:

208.125g

Explanation:

Given parameters:

 Number of moles of HCl = 3.75moles

Unknown:

 Mass of CaCl₂ that will be produced = ?

Solution:

The reaction equation is given as:

  2HCl  + Ca(OH)₂   →   CaCl₂ + 2H₂O

Now, to find the mass of CaCl₂, we have to work from the known to the unknown.

The known specie here is the number of moles of HCl;

        2 mole of HCl will produce 1 mole of  CaCl₂

       3.75moles of HCl will produce [tex]\frac{3.75}{2}[/tex]   = 1.875moles

The mass of  CaCl₂;

  Mass of  CaCl₂ = number of moles of  CaCl₂ x molar mass

Molar mass of  CaCl₂ = 40 + 2(35.5) = 111g/mol

  Mass of  CaCl₂ = 1.875 x 111 = 208.125g

Answer:f has 14 electrons in 7 sublevel orbitals,d has 10 electrons in 5 sublevel orbitals,p has 6 electrons in 3 sublevel orbitals,s has 2 electrons in 1 sublevel orbital.

Explanation:

Answer:

14 i think

Explanation:

i googled it

Two atoms that are different isotopes of the same element have same number of protons.

Element is defined as a substance which cannot be broken down further into any other substance. Each element is made up of its own type of atom. Due to this reason all elements are different from one another.

Elements can be classified as metals and non-metals. Metals are shiny and conduct electricity and are all solids at room temperature except mercury. Non-metals do not conduct electricity and are mostly gases at room temperature except carbon and sulfur.

The number of protons in the nucleus is the defining property of an element and is related to the atomic number.All atoms with same atomic number are atoms of same element.Each element has atoms which are unique to itself.

Learn more about elements,here:

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Answer:

it should be 2

Explanation:

Answer:

An amide and water are the products formed

Explanation:

Here, we want to know the possible products that could be formed from the reaction of a carboxylic acid with an amine.

An anime has the functional group NH2 while for an organic acids, we have COOH.

So essentially we want to know the result of these two functional groups coming together to react.

The reaction between these two will form an amide in conjunction with water.

Take for example;

R-COOH + R’-NH2 ———> R-COHN -R’ + H2O

Where R and R’ may be the same or different alkyl or aryl groups

Answer:

d

Explanation:

Answer:

Its d

Explanation:

Ik you already know this, I just wanted the points tbh

Answer:

It's B

Explanation:

I got it right on edjenuity

The most likely outcome of the retrofitting of a nuclear power plant is that it will be able to reprocess its used uranium fuel. Therefore, option C is correct.

A nuclear power plant is a facility that generates electricity by harnessing the heat produced by nuclear reactions. At the heart of a nuclear power plant is the reactor, where a controlled chain reaction of nuclear fission occurs.

Reprocessing is a process by which the used nuclear fuel is chemically treated to separate out and recover the unused uranium and plutonium, which can then be reused as fuel. This reduces the amount of radioactive waste produced by the plant and also extends the life of the uranium fuel.

The fission reactions to fusion reactions is not currently a viable option for power generation, and the idea that a retrofitting would eliminate radioactive wastes is unlikely, as nuclear power plants will always produce some amount of radioactive waste.

Thus, option C is correct.

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Answer:

The density of muffin is 0.2 g/ cm³.

Explanation:

Given data:

Mass of muffin = 100 g

Volume of muffin = 500 cm³

Density of muffin = ?

Solution:

Density is equal to the mass of an object divided by its volume.

Formula:

d = m/v

Now we will put the values in formula.

d = 100 g/ 500 cm³

d = 0.2 g/ cm³

The density of muffin is 0.2 g/ cm³.

Answer:

There was more erosion in the Colorado Rockies scenario where there was steady rain compared to the scenario in the same area where there was only a drizzle. There is more erosion because the steady rain increased the volume of the river more than the drizzle did. Because there was more water added to the river, the river flowed faster. The faster a river flows, the more sediments it transports or erodes.

Explanation:

Edge

There was greater erosion inside the Colorado Rockies situation when there was persistent rain.

Erosion is the loss of soil or rock from the Earth's crust's surface, as well as the movement of the removed material by natural forces (such as wind or water). The term "erosion" is used in its broadest sense to refer to the overall thinning and moulding of all landmasses on the surface of the planet, such as the corrosion of rock in its natural position, the vehicles and public of weathered material, as well as erosion brought on by wind action, marine, as well as glacial processes.

In contrast to the situation within the identical region where there was simply a drizzle, there was greater erosion inside the Colorado Rockies situation when there was persistent rain. Because the volume of a river was raised by the constant rain more than by the drizzle, there is more erosion. The river flowed more quickly as a result of the additional water. A river transfers or erodes more material the quicker it runs.

Therefore, there was greater erosion inside the Colorado Rockies situation when there was persistent rain.

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Answer: how do we answer when there are no options??

Explanation:

Answer:

yeasts, moulds, bread, beer, wine, ...

Explanation:

Answer:

mountain range formation, and seafloor spreading

Explanation:

I TOOK THE TEST!!

and it was right