Helpp me plsss I don't understand this

The chemical equation between Ba(OH)2 and H2CO3 is Ba(OH)₂ + H₂CO₃ → BaCO₃ + 2 H₂O.

A balanced equation has the reactants are on the left side of the arrow, whereas the products are on the right.

The number in front of a chemical formula denotes the number of moles in a compound. The number of atoms in a single molecule is indicated by subscripts (numbers below an atom).

Thus, the chemical equation is Ba(OH)₂ + H₂CO₃ → BaCO₃ + 2H₂O.

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The correct order of the atmospheric layers from bottom to top are

Answer:

A

Explanation:

l took the test

Answer: The disposal of radioactive waste.

               Is the most expensive source of energy.

               Nuclear electricity generation requires a lot of fuel.

Explanation: This are the main problems of Nuclear Electricity Generation.

Answer(s):

Template: reactants ⇒ products

1. [tex]Ag+KNO_3[/tex] ⇒ [tex]AgNO_3 + K[/tex]

2. [tex]Zn+AgNO_3[/tex] ⇒ [tex]Zn(NO_3)_2 + Ag[/tex]

3. [tex]Al + H_2SO_4[/tex] ⇒ [tex]Al_2(SO_4)_3 + H_2[/tex]

4. [tex]Cl_2+KI[/tex] ⇒ [tex]HCl + I_2[/tex]

5. [tex]Li + H_2O[/tex] ⇒ [tex]LiOH + H_2[/tex]

6. [tex]Cu + FeSO_4[/tex] ⇒ [tex]CuSO_4 + Fe[/tex]

7. [tex]Na + H_2O[/tex] ⇒ [tex]NaOH + H_2[/tex]

8. [tex]Fe+Pb(NO_3)_2[/tex] ⇒ [tex]Fe(NO_3)_2 + Pb[/tex]

9. [tex]Cu+H_2O[/tex] ⇒ [tex]CuO + H_2[/tex]

10. [tex]Cu+Al_2(SO_4)_3[/tex] ⇒ [tex]CuSO_4 + Al[/tex]

11. [tex]Al + Pb(NO_3)_2[/tex] ⇒ [tex]Al(NO_3)_3 + Pb[/tex]

What is a chemical equation?

A chemical equation consists of the chemical formulas of the reactants (on the left) and the products (on the right). The two are separated by an arrow symbol (“→” usually read aloud as “yields”). Each individual substance's chemical formula is separated from others by a plus sign.

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Answer:

long toes

Explanation:

the other traits are personality related, not a biological factor. they can be learned, but not inherited

Answer:

firer burning I'm thinking

When we convert 5000 grams of hydrogen into water, the mass of the water obtained is 45000 g

2H₂ + O₂ —> 2H₂O

Molar mass of H₂ = 2 g/mol

Mass of H₂ from the balanced equation = 2 × 2 = 4 g

Molar mass of H₂O = 18 g/mol

Mass of H₂O from the balanced equation = 2 × 18 = 36 g

SUMMARY

From the balanced equation above,

4 g of H₂ reacted to produce 36 g of H₂O

From the balanced equation above,

4 g of H₂ reacted to produce 36 g of H₂O

Therefore,

5000 g of H₂ will react to produce = (5000 × 36) / 4 = 45000 g of H₂O

Thus, 5000 g of H₂ is equivalent to 45000 g of H₂O

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Answer:

Elements were formed from a supernova in space that was so powerful, it gave us almost all the elements we have today.

C. Evaluating the results.

Explanation:

I hope it'll help you...

Answer:

yes you are doing it right my chemistry teacher said said so

Answer:

c

Explanation:

i dont have one

The molar solubility of AuCl₃ in a 0.013 M solution of magnesium chloride is 1.81×10⁻²⁸M.

The solubility product constant, Ksp, is the equilibrium constant for a solid substance dissolving in an aqueous solution. And for the AuCl₃, Ksp will be written as: Ksp = [Au³⁺][Cl⁻]³

Let the solubility of the AuCl₃ in 0.013M solution of magnesium chloride is x, of Au³⁺ is x and of Cl⁻ is 3x. But we know that MgCl₂ is a strong electrolyte and it completely dissociates into its ions and will produce 2 moles of chloride ions. For this solution let we consider the volume is 1 liter then the concentration of chloride ions in MgCl₂ is 2(0.013)=0.026M.

So, in MgCl₂ solution concentration of Cl⁻ becomes = 3x + 0.026.

Value of Ksp for AuCl₃ = 3.2 × 10⁻²³

On putting all values on the Ksp equation, we get

Ksp = (x)(3x + 0.026)³

Value of 3x is negligible as compared to the 0.026, so the equation becomes

3.2 × 10⁻²³ = (x)(0.026)³

x = 3.2×10⁻²³ / (0.026)³

x = 1.81×10⁻²⁸M

Hence the molar solubility of AuCl₃ in 0.010M MgCl₂ is 1.81×10⁻²⁸M.

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Answer:

See below ~

Explanation:

Sea water has a high amount of salt present in it. The density of salt is higher than that of water. It dissolves in water, thereby increasing its density. Hence, this is why sea water has a higher density than tap water.

Answer:

sea water have high density and also they're moving from one side to another more than tap water

tap water have less density and also they're not moving ever they ain't move than sea water

The structure of 3-ethyl-2 fluroheptane is attached. The chemical formula of the compound is C9H19F.

It is an organic compound which has one pair of hydrogen and acceptor and zero hydrogen bond donor.

The chemical formula of the compound is [tex]C_9H_1_9_F.[/tex]

Thus, the structure of 3-ethyl-2 fluroheptane is attached. The chemical formula of the compound is C9H19F.

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Answer: polymers

Explanation:

Polymers are huge natural molecules are connected with small natural molecules 

9.38ml of a 14.0 M solution of sulfurous acid is required to make 175 mL of a 0.750 M solution.

Molarity (M) is the amount of a substance in a certain volume of solution.

Molarity is defined as the moles of a solute per liters of a solution.

Molarity is also known as the molar concentration of a solution.

The units of molarity are M or mol/L.

M = moles solute / liters solution

We know that

M₁V₁ = M₂V₂

It is given that M₁ = 14 M

V₁ = ?

M₂= 0.75 M

V₂= 175 ml

so

14 * V₁ = 0.75 * 175

V₁ = 9.38 ml.

Therefore 9.38ml of a 14.0 M solution of sulfurous acid is required to make 175 mL of a 0.750 M solution.

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Answer:

2 groups

Explanation:

The molecule 3, 3-diethylpentane has 2 ethyl groups because the prefix di- means that there are 2 homogeneous substituent groups present in the molecule.

1.137448506 mol moles of chlorine gas would occupy a volume of 35.5 L at a pressure of 100.0 kPa and a temperature of 100.0 degrees Celsius.

The ideal gas equation, pV = nRT, is an equation used to calculate either the pressure, volume, temperature or number of moles of a gas. The terms are: p = pressure, in pascals (Pa). V = volume, in [tex]m^3[/tex].

We apply the formula of the ideal gases, we clear n (number of moles); we use the ideal gas constant R = 0.082 l atm / K mol:

PV= nRT

Given data:

P=100.0 kPa =0.986923 atm

T=100 degree celcius= 100 + 273 =373 K

V=35.5 L

Substituting the values in the equation.

n= [tex]\frac{\;0,98 \;atm \;X \;35,5 \;L }{\;0,082\;atm / \;K mol \;X \;373 K}[/tex]

n= 1.137448506 mol

Hence, 1.137448506 mol moles of chlorine gas would occupy a volume of 35.5 L at a pressure of 100.0 kPa and a temperature of 100.0 degrees Celsius.

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Answer:

Natural Springs answer.

Explanation:

Actually valid reason for why the dam was built

The mass of NaOH that is necessary to neutralize 8.90 mol of HCl is 356 grams.

Mass of any substance will be calculated from moles by using the below equation as:

n = W/M, where

W = required mass

M = molar mass

Neutralization reaction will be:

NaOH + HCl → NaCl + H₂O

From the stoichiometry it is clear that 1 mole of NaOH is required to neutralize 1 mole of HCl, so that 8.90 moles of NaOH is needed.

Mass of 8.9 moles of NaOH = (8.9mol)(40g/mol) = 356g

Hence required mass of NaOH is 356 grams.

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Answer:

≈ 76.16%

Explanation:

What is Percent Yield? In chemistry, percent yield is the percent ratio of the weight of the product obtained to the theoretical yield. We calculate the percent yield by dividing the experimental yield by the theoretical yield and multiplying the result by 100 to express the final answer in %.

[tex]\frac{actual}{theoretical} (100)=percentyield[/tex]  ⇒  [tex]\frac{278}{365} (100)=76.1643835616[/tex]

≈ 76.16%

hope this helped :)

Answer:

76.16%

Explanation:

I know answer is correct because I got the exact same question :)

The required amount of KClO₃ to prepare a saturated solution is 48 grams.

The ability of a material, the solute, to create a solution with another substance, the solvent, is known as solubility.

Given graph is plotted between the temperature and solubility of the substance at 100g of water, so for the given points calculation will be:

x = (40)(68) / (100) = 27.2g

Hence, we require almost 48g of KClO₃ to prepare a saturated solution of KClO₃.

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Answer:

3 mol

Explanation:

[tex] \frac{1.81 \times 10 {}^{24} \times C \times atoms}{6.022 \times {10}^{23}\times C \times atoms \times mol {}^{ - 1} } = 3 \: \: mol \\ [/tex]

Answer:

elliptical/ellipse

Explanation:

» Concepts

Astronomer Johannes Kepler discovered and founded his three laws of planetary motion. One of these laws states that the orbit of all planets, including Earth, is in an elliptical shape rather than a circle.

Let's see

[tex]\\ \rm\Rrightarrow C_{12}H_{22}O_{11}[/tex]

[tex]\\ \rm\Rrightarrow 12(12)+22(1)+11(16)[/tex]

[tex]\\ \rm\Rrightarrow 144+22+176[/tex]

[tex]\\ \rm\Rrightarrow 166+176[/tex]

[tex]\\ \rm\Rrightarrow 342g/mol[/tex]

Answer: 0.7 M

Explanation:

molarity = (moles of solute)/(liters of solution) = 1.75/2.5 = 0.7 M

Coltan, lumber and fossil fuels are all part of the resources that exists in the environment.

The term resources refer to those materials that we extract from the environment that can be used or our good. These resources could include minerals or energy raw materials.

However, coltan, lumber and fossil fuels are all part of the resources that exists in the environment.

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Answer B A B A

Explanation:

i got it right