A worm is shown in the picture.



What kind of worm is it?

a planarian
a leech
a fluke
a tapeworm

Answer:

3.6 moles

Explanation:

The balanced equation for the reaction is given below:

N₂ + 3H₂ —> 2NH₃

From the balanced equation above,

1 mole of N₂ reacted with 3 moles of H₂ to produce 2 moles NH₃.

Next, we shall determine the limiting reactant. This can be obtained as follow:

From the balanced equation above,

1 mole of N₂ reacted with 3 moles of H₂.

Therefore, 3.2 moles of N₂ will react with = 3.2 × 3 = 9.6 moles of H₂.

From the calculation made above, we can see that it will take a higher amount (i.e 9.6 moles) of H₂ than what was given (i.e 5.4 moles) to react completely with 3.2 moles of N₂.

Therefore, H₂ is the limiting reactant and N₂ is the excess reactant.

Finally, we the greatest quantity of ammonia, NH₃ produced from the reaction.

In this case, the limiting reactant will be use because all of it is consumed in the reaction.

The limiting reactant is H₂ and greatest quantity of ammonia, NH₃ produced can be obtained as follow:

From the balanced equation above,

3 moles of H₂ reacted to produce 2 moles NH₃.

Therefore, 5.4 of H₂ will react to produce = (5.4 × 2)/3 = 3.6 moles of NH₃

Thus, the greatest quantity of ammonia, NH₃ produced from the reaction is 3.6 moles

Answer:

1. e

2. d

3. b

4. g

5. g, a both work

6. c

7. f

8. a, d both work

9. h

10. g

Explanation:

Li2S + 2 HNO3 --> 2 LiNO3 + H2S

Li2 S  +   H2 N2 O2  -->   Li2 N2 O5   +   H2 S

Li S + H2 N2 O5 -> Li N2 O5 + H2 S

Li2 S2 + H4 N4 O10 -->  Li2 N4 O10 + H4 S2

Li^2  S^2  +  H^4 N^4 O^10  --> Li^2 N^4  O^10  +  H^4 S^2

Answer:

i thjink its b

Explanation:

Answer:

Carbon dioxide is a greenhouse gas: a gas that absorbs heat. Warmed by sunlight, Earth’s land and ocean surfaces continuously radiate thermal infrared energy (heat). Unlike oxygen or nitrogen (which make up most of our atmosphere), greenhouse gases absorb that heat and release it gradually over time, like bricks in a fireplace after the fire goes out. Without this natural greenhouse effect, Earth’s average annual temperature would be below freezing instead of close to 60°F. But increases in g...

Explanation:

Answer:

9.69 grams

Explanation:

e

Answer:

9.69g KCl

Explanation:

[tex]0.13 molesKCl\frac{74.55gKCl}{1moleKCl} =9.69gKCl[/tex]

Answer:

20

Explanation:

Atomic number/proton number = 20 (protons in nucleus)

Atomic mass number = 40 (protons + neutrons in nucleus)

40 - 20 = 20

Answer:

It has two sigma bonds ( the single bonds between each H and C) plus one pi bond and one sigma bond that consitute the double bond between C and O. It contains three covalent bonds, one . Hydrogen Bond Donor Count: 0: Computed by Cactvs 3.4.

Explanation:

Hope it helps you!

Answer:

No. of electrons of the element

Answer:

The rate determining step is step 1

Explanation:

In the rate law for the given reaction,

So, option C is correct one.

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Answer: Water is made up of elements hydrogen and oxygen. Ozone is made up of element oxygen. The common element between them is oxygen.

Explanation:

Element is a pure substance which is composed of atoms of similar elements. It can not be decomposed into simpler constituents using chemical reactions.Example: Hydrogen (H)

Water and ozone are compounds which are formed by the combination of elements in fixed ratio by mass.Water and ozone have molecular formulas of [tex]H_2O[/tex] and [tex]O_3[/tex] respectively.Water is made up of elements hydrogen (H) and oxygen (O). Ozone is made up of element oxygen (O).

Thus the common element between them is oxygen (O).

Answer:

0.0123 M/s

Explanation:

The reaction rate is the rate at which the reaction takes place and results in an increased concentration of the products. The rate of the reaction is 0.0123 M/s.

The reaction rate is the increase of the concentration of the product with respect to time in seconds. The rate of reaction is given by,

[tex]\rm rate = \rm \dfrac {\Delta C}{\Delta t}[/tex]

Given,

Change in product concentration = 1.478

Time period = 120 seconds

Substituting values in the above equation:

[tex]\begin{aligned} \rm rate &= \rm \dfrac {\Delta C}{\Delta t}\\\\& = \dfrac{1.478}{120}\\\\&= 0.0123 \end{aligned}[/tex]

Therefore, option B. 0.0123 M/s is the reaction rate.

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Answer:

B. Na+ and O2-

Explanation:

Na+ plus has 10 electrons and O2- also has 10 electrons

Answer:

1st one

Explanation:

Answer:

B

Explanation:

chlorine 2×3= 6 not sure

Answer:

false

Explanation:

different things will have different melting points

Answer:

39.948 u

Explanation:

Answer:

Humans and trees are interdependent - we breathe in oxygen and breathe out carbon dioxide, while trees take in carbon dioxide and release oxygen.

Humans have about a thousand genes similar to those of bacteria, presumably because the genes are so vital that their DNA structure has remained much the same over millions of years of descent from a common ancestor.

Explanation:

The type of molecule is to be considered as the option a. Alkyne. And, the same is to be considered.

In terms of the chemical compound, Alkynes refer to Molecules which comprise of the triple bond that arise between 2 carbon atoms.

Also, the triple bond should be made up of one σ bond and two π bonds.

hence, The type of molecule is to be considered as the option a. Alkyne. And, the same is to be considered.

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Answer:

9.8

Explanation:

Answer:

The percentage by mass of benzene in the solution is approximately 0.2%

Explanation:

The given parameters are;

The mass of the benzene solute dissolved in the gasoline solvent, m₁ = 1.56 g

The total volume of the benzene gasoline solution made, V = 998.44 mL

The density of gasoline, ρ = 0.7489 g/mL

Mass, m = Density, ρ × Volume, V

∴ The mass of gasoline in the 998.44 mL, solution = 0.7489 g/mL × 998.44 mL = 747.731716 g

The total mass of the solution = The mass of the benzene in the solution + The mass of the gasoline in the solution

∴ The total mass of the solution = 747.731716 g + 1.5 g = 749.231716 g

[tex]The \ percentage \ by \ mass = \dfrac{The \ mass \ of \ a \ fraction}{(The \ mass \ of \ the \ total \ solution)} \times 100[/tex]

The percentage by mass of benzene in the solution = (1.5 g/749.231716 g)×100 ≈ 0.2% by mass.

Answer:

Comrade, figures, and sad

Explanation

The solution of sugar, salt etc in water.

Sublimation of substances like iodine, camphor etc into the air.

Hydrated salts, mercury in amalgamated zinc,

Alcohol in water, benzene in toluene

Answer:are there any abc or do you have to make an answer?

Explanation:

Do you have the answers for this test ?!?Im taking it right now and grades are due this friday so I need to pass this test

Answer:

C

Explanation:

Answer: A. NO increases the rate at which SO3 molecules are formed.

Explanation: I got this right on Edmentum.

Answer:

When fireworks explode in the sky, the gunpowder reactions create a lot of heat, causing the metallic substances pres- ent in the stars to absorb energy from the heat and emit light. ... These electrons absorb energy from the heat, which causes them to move from their original ground-energy state to an excited state.

Explanation:

:))

The process which generates energy in sun and other stars is nuclear fusion. The emission of light energy is thus the result of fusion reaction taking place in stars.

Nuclear fusion is a chemical process in which two light nuclei or isotopes of an atom fuse together to form a heavy nuclei with the release of million tons of energy.

The process in which a heavy atom breaks into lighter atoms is called nuclear fusion and it is also releasing massive energy but less than the from fusion because, the breaking of chemical bonds needs some energy to absorb.

Fusing two chemical bonds is needs no more energy and it is an energy releasing process. Millions of hydrogen atoms and its isotopes fuse together in several steps and form helium atoms.

This process of release million tons of heat energy and light energy. This will make the stars glow.

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Answer:

no questions and no list

Answer: a. 249.5 g/mol

b. 1.996 g

c. Measure 1.996 g of [tex]CuSO_4.5H_2O[/tex] and dissolve in water until the volume is 400 ml

Explanation:

Molar mass is the sum of atomic masses of all the elements present.

Thus molar mass of [tex]CuSO_4.5H_2O[/tex] = 1(63.5)+1(32)+4(16)+5(18) = 249.5 g/mol

Molarity of a solution is defined as the number of moles of solute dissolved per liter of the solution.

To calculate the number of moles for given molarity, we use the equation:

[tex]\text{Molarity of the solution}=\frac{\text{given mass of solute}\times 1000}{\text {Molar mass of solute}}\times \text{Volume of solution in ml}}[/tex]

[tex]0.02mol/L=\frac{x\times 1000}{249.5g/mol\times 400}[/tex]

[tex]x=1.996 g[/tex]

c. We need to measure 1.996 g of [tex]CuSO_4.5H_2O[/tex] and dissolve it in water to make the volume 400 ml.