This formula equation is unbalanced.

BaCl2(aq) + Na2CO3(aq) Right arrow. BaCO3(s) + NaCl(aq)

Which coefficient should be placed in front of NaCl to balance this equation?
1
2
3
4

Answer:

.D you have any idea

Explanation:

Sana makatulong

Answer:

In scientific ecology, climax community or climatic climax community is a historic term for a boreal forest community of plants, animals, and fungi which, through the process of ecological succession in the development of vegetation in an area over time, have reached a steady state.

Explanation:

Answer: It would be A and C

Explanation: I did the test and got it right. Hope this helps!

Answer:

A + C

Explanation:

ur an amazing person have a great day :3

quote for today : ~dont trust anyone to much remeber the devil was once angle

From the calculation, the specific heat capacity of the aluminum is 9.5 * 10^-5  J/g °C

The specific heat capacity refers to the heat that is required to raise the temperature of a body by 1K. The heat gained by the water is equal to the heat energy lost by the aluminum hence the negative sign.

Thus;

-(125 * c *  –74.95) = 1,000 g *  4.184 *  2

c =  1,000 g *  4.184 *  2/125 * 74.95

c = 8368/9368.75

c= 9.5 * 10^-5  J/g °C

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Answer:

salt + water. It is called the ionic equation for neutralisation. the acid to form a salt solution.

Explanation:

So what you end up with is you always end up H+ plus OH- yields H2O, because HCl, and NaOH, since they're strong, they fully dissociate. So the Na+, and the Cl - are spectator ions. So with a strong acid and strong base, the net ion equation is always H+ plus OH- yields H2O.

Answer:

d

Explanation:

because it’s moving the most spots to the left

The acidity or alkalinity of a solution depends upon its hydronium ion concentration and hydroxide ion concentration. Here among the given solutions, the solution D has the highest pH. The correct option is D.

The pH of a solution is defined as the negative logarithm to the base 10 of the value of the hydronium ion concentration in moles per litre. The pH scale is introduced by the scientist Sorensen. It is more easy to express the concentration of H₃O⁺ using this method.

The equation used to calculate the pH of the solution is given as:

pH = -log[H₃O⁺]

For 0.1 M

pH = -log[0.1] = 1

For 0.01 M

pH = -log[0.01] = 2

For 0.001 M

pH =  -log[0.001] = 3

For 0.0001 M

pH =  -log[0.0001] = 4

So solution D has the highest pH which is 4.

Thus the correct option is D.

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Answer:

im assuming you need the balanced equation

Explanation:

Zn + MgCl2 = ZnCl2 + Mg

Answer:

it will mgcl2 + zn

Explanation:

Mg will replace zn from its salt solution

to form mgcl2

hope it helps

Answer: The definition of periodic is something that is recurring at regular intervals, or happens from time to time. An example of periodic is a person's birthday happening once each year.

hope this helps y❣️

Answer:

45 mol

Explanation:

First you need to balance the equation:

6K + Cr2O3 = 3K2O + 2Cr

the proportion of the coeficients of potassium and chromium oxide is 6 to 1 so we need to multiply 7.5 by 6 to get 45.

Answer:

5.4

Explanation:

V1=5.0

T1=25+ 273=298

V2= z(unknown)

T2=5+273=278

V1/T1 =V2/T2

V2=V1T2/T1

=5*298/278

=5.4

Answer:

I'm pretty sure it's the cell membrane

Answer:

they are only efficient in certain areas

Explanation:

Wind turbine are efficient only in certain areas it is a problem with using wind turbines to produce energy.

Wind turbine convert the wind energy into the electricity. It is a power generating device that converts the kinetic energy in to electrical energy.

Now lets check all option one by one:

Option (A): Wind turbines are efficient only in certain areas it is a problem with using wind turbines to produce energy because the flow of air from areas of high pressure towards the lower pressure.

So, it is correct option.

Option (B): Wind turbines occupy a lot of space to work.

So, it is incorrect option.

Option (C): Wind turbines produce a large amount of energy is not a problem.

So, it is incorrect option.

Option (D): Wind turbines does not create a pollution or it does not pollute the air or water.

So, it is incorrect option.

Thus, we can say that Wind turbines are efficient only in certain areas it is a problem with using wind turbines to produce energy because the flow of air from areas of high pressure towards the lower pressure.

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Answer:

When iron is allowed to react with HCl,

It produces hydrogen and the release of hydrogen gas prevents the formation of ferric chloride.

Hope it helps

Thank you

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Answer:

Chlorine

Explanation:

The tendency of an atom to attract electron is referred to as electronegativty. In the periodic table, electronegativity increases across the period from left to right and decreases down the group.

Following that trend, the element with the greatest electronegativty is;

Chlorine

The atom that has the strongest attraction for electrons in a chemical bond in the options is Chlorine.  

The tendency of an atom to attract electrons to itself is know as electronegativity.

The most electronegative element is fluorine.

Electronegativity increases across the period in the periodic table.

Electronegativity decreases down the group in the periodic table.

Examples of electronegative elements are mostly non metals like oxygen, fluorine, chlorine, etc.

Therefore, the atom that has the strongest attraction for electrons in a chemical bond is Chlorine.  

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Answer:

166,600J

Explanation:

Kinetic energy (K.E), which is the energy due to motion of a body, can be calculated by using the formula;

K.E = 1/2 × m × v²

Where;

K.E = kinetic energy (joules)

m = mass of body (kg)

v = speed or velocity (m/s)

According to this question, the mass of the roller coaster is 833.0 kg while its velocity/speed is 20.0m/s.

K.E = 1/2 × 833 × 20²

K.E = 1/2 × 833 × 400

K.E = 1/2 × 333200

K.E = 166,600

Therefore, the kinetic energy of the roller coaster car is 166,600J.

Answer:

pop, emotional, heart touching, freestyle and rap music is what I LOVE!!!!!

Answer:

Contact

Explanation:

As the speed of the particles increases, they move around more, which means they hit the sides of the container more.

Answer:

D

Explanation:

A single-replacement reaction occurs when one element replace another in a single compound.

Answer:

12

Explanation:so the mean deviation is for the square and the square is for you so you keep the square and add it.

Answer:

1. mean: 7.78 median: 8 mode: 7

2. range: 9 interquartile range: 2 MAD: 4.5367

3. The range is about 4 times bigger than the interquartile range. The mean is around double the MAD.

Explanation:

Answer:

The vector sum of all forces that act upon an object

Answer: N2F4

Explanation:(NF2)x2 = N2F2

The compound X has a molar mass of 104.01·gmol−1 and the following composition: element mass % nitrogen 26.93% fluorine 73.07%, then the molecular formula of X is N2F4.

Molecular formula is defined as a chemical formula that give the total number of atoms of each elements in each molecule of a substance.

It can also be defined as a phrase that specifies the number of atoms of each element in a complex molecule.

It represents the actual number of each atom in a molecules.

It tells us which atoms and how many of each types of atoms are present in a molecule.

NF2 x 2 = N2F4

Thus, the compound X has a molar mass of 104.01·gmol−1 and the following composition: element mass % nitrogen 26.93% fluorine 73.07%, then the molecular formula of X is N2F4.

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Answer:

Yes, pure NaCl will precipitate out of the solution

Explanation:

The parameters of the NaCl solution and HCl mixture are;

The saturation of the NaCl solution = Saturated solution

The mass concentration of the NaCl solution = 317 g/L

The volume of the HCl added = 10 mL

The concentration of the HCl added = 13.0 M HCl

The volume of the saturated NaCl solution = 0.2 L

The molar mass of NaCl = 58.44 g/mol

The number of moles of NaCl per liter = (317 g/L)/(58.44 g/mol) = 7925/1461 moles ≈ 5.42 moles

The ionization of the molecules in solution are;

HCl (aq) + H₂O (l) → H₃O⁺ (aq) + Cl⁻ (aq)

NaCl (s) ↔ Na⁺ (aq) + Cl⁻ (aq)

The number of moles of the Cl⁻ ion from the HCl is 13 moles per liter, the number of moles of Cl⁻ ion from the saturated solution of NaCl is approximately 5.42 moles, therefore, ionic product I.P. of the solution of Cl⁻ ions is larger than the solubility product of the solution, [tex]K_{sp}[/tex] of the NaCl and according to Le C h a t e l i e r's principle, NaCl will precipitate out of the solution

Answer: Ocean rise?

Explanation:

Answer:

submerging of low islands and coast lines

Explanation:

earth science climate change unit test

Answer:

It would tend to lose two electrons and form a +2 ion. Potassium is in the first column and therefore has 1 electron in its outermost shell. It would tend to lose one electron and form a +1 ion.

The physical form of the material matter for mass-mole and mole-mass calculations is solid.

Relation between mass and moles will be represented as:

n = W/M, where

W = given mass in grams

M = molar mass in grams/mole

So the physical state of the matter that is used in the above relation is solid because solid is only present in the grams and kilogrmas quantity.

Hence solid is the physical form of the matter.

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Answer:

the moles of N2O are 33/(14.2 + 16) = 0,75 (mol)

NH4NO3 ----------->  N2O + 2H2O

0.75          <---          0.75  

=> The moles of NH4NO3 are 0,75 mol

=> m = 0,75(14.2 + 4 + 16.3) = 60 (g)

Explanation:

Answer:

60 grams of NH4NO3

Explanation:

Answer:

How many atoms are in 6.2 moles of aluminum? I mol = 6.02X1023 atoms so 6.2 mol = 6.2x (6.02x1025) = 3.73 x1024 atoms of Aluminum

There are approximately 3.86528 × 10²⁴ atoms of aluminum (Al) in 6.4 mol of aluminum.

To determine the number of atoms of aluminum (Al) in 6.4 mol, we use Avogadro's number, which states that 1 mole of any substance contains 6.022 × 10²³ particles (atoms, molecules, or ions).

Given that 6.4 mol of aluminum is provided, we can use Avogadro's number to calculate the number of atoms:

Number of atoms = (6.4 mol) × (6.022 × 10²³ atoms/mol)

Calculating the multiplication, we find:

Number of atoms = 3.86528 × 10²⁴ atoms

Therefore, there are approximately 3.86528 × 10²⁴ atoms of aluminum (Al) in 6.4 mol of aluminum.

This calculation is based on the fact that 1 mole of aluminum contains Avogadro's number of aluminum atoms. The molar quantity allows us to convert between the mass of a substance and the number of atoms or molecules present.

Avogadro's number is a fundamental constant in chemistry that relates the mass of a substance to the number of particles it contains. It is approximately 6.022 × 10²³ particles per mole. By using this conversion factor, we can determine the number of atoms present in a given amount of substance.

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Answer:

100

ddExplanation: