write the formula for lead oxide.

The complete statement is  "Bacteria contribute to the nitrogen cycle by removing nitrogen from the air and converting it into a form that is usable by plants." This is further explained below.

Generally, Bacteria are mono-celled tiny creatures that can be beneficial. Bacteria are germs with a simpler cell structure than many other creatures.

In conclusion, Bacteria contribute to the nitrogen cycle by removing nitrogen from the air and converting it.

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Answer:bacteria

Explanation:

Answer:

pasture/range

Explanation:

this is because more than 1/3 of the country's land is being used for this mean alone.

Answer: Forest

Explanation: The largest percentage of land use in the United States is for forests.

Fill to the 250-mL mark with water after mixing a tiny amount of water with the solute to dissolve it.

Answer:

About 7.9 L.

Explanation:

We can utilize the ideal gas law. Recall that:

[tex]\displaystyle PV = nRT[/tex]

Because the amount of carbon dioxide does not change, we can rearrange to formula to:
[tex]\displaystyle \frac{PV}{T}= nR[/tex]

Because the right-hand side stays constant, we have that:
[tex]\displaystyle \frac{P_1V_1}{T_1} = \frac{P_2V_2}{T_2} = nR[/tex]

Hence substitute initial values and known final values:
[tex]\displaystyle \begin{aligned} \frac{(793\text{ mm Hg})(4.65 \text{ L})}{(22 \text{ $^\circ$C})} & = \frac{(743 \text{ mm Hg})V_2}{(35\text{ $^\circ$C})} \\ \\ V_2 & = 7.9\text{ L}\end{aligned}[/tex]

Therefore, the final volume is about 7.9 L.

Answer:

The measurement of the mass of nuclei has revealed that the mass of the constituent protons and neutrons is more than the mass of the nucleus

Explanation:

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Fission is when the parent atom splits into two daughter products. Whereas atom with a mass number is lower by 4 and an atomic number is lower by 2.

Fission outcomes emit beta radiation, while actinides mainly emit alpha radiation. Many of each also radiate gamma radiation.

The beta decays form an isobaric, fission-product decay chain for each mass number.

Thus, Fission is when the parent atom splits into two daughter products.

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Answer:

That’s because of the law of conservation of energy, which states that: Energy cannot be created or destroyed.

Explanation:

Energy may change form during a chemical reaction. For example, energy may change from chemical energy to heat energy when gas burns in a furnace. The exact amount of energy remains after the reaction as before.

The amount of heat absorbed in kilojoules when 3.5 moles of water react is 1635.08 KJ

6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂  ΔH = 2803 KJ

From the balanced equation for above,

6 moles of water reacted to absorb 2803 KJ of heat

From the balanced equation for above,

6 moles of water reacted to absorb 2803 KJ of heat

Therefore,

3.5 moles of water will react to absorb = (3.5 × 2803) / 6 = 1635.08 KJ of heat

Thus, 1635.08 KJ of heat were absorbed by the reaction.

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Answer:

Peptide Bonds

Explanation:

Peptide bonds are formed by a biochemical reaction that extracts a water molecule as it joins the amino group of one amino acid to the carboxyl group of a neighboring amino acid.

Answer:

NO + O2 NO2

Explanation:

The pH of the buffer prepared by adding 275 mL of .676M of HCl to 500 mL of .525M sodium acetate is 6.45.

The pH of a buffer solution can be calculated by initially calculating the millimoles of both the conjugate base and acid.

From, Henderson Hasselbalch equation,

pH = pKa + log conjugate base/acid

pka of HCl = -6.3

-6.3 + log 262.5/185.9

6.3 + 0.15

pH = 6.45

Therefore, the pH of the buffer prepared by adding 275 mL of .676M of HCl to 500 mL of .525M sodium acetate is 6.45.

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Magnetic lines of force are are strongest at each pole, where the field lines are closest together.

A magnetic field is the region around a magnet where the influence of the magnet can be felt. The magnetic line of force show the intensity as well as the direction of the magnetic field.

The fact that is true for all magnetic fields is that they are strongest at each pole, where the field lines are closest together.

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Answer: Iron

Explanation: There are little minnerals that make it magnetic.

Answer:

0.87708moldm-3

Explanation:

[tex]molar \: mass \: of \: cuso4 = 63.55 + 32.07 + 4(16.00) \\ =159.62gmol {}^{ - 1} \\ mole(n) = \frac{mass}{molar \: mass } \\ n = \frac{35}{159.62} \\ n = 0.21927mol \\ molarity = \frac{n}{v} \\ molarity = \frac{0.21927}{0.25} \\ molarity = 0.87708moldm {}^{ - 3} [/tex]

Answer:

exothermic

Explanation:

The acceleration of the block will be -2 m/s² in the backward direction.

Force is defined as the product of mass of the body and the acceleration with which it is moving. Mathematically -

F = ma

It is a vector quantity. In the three dimensional coordinate system, the force vector can be resolved as -

[F] = F[x] a[x] + F[y] a[y] + F[z] a[z]

Given is a diagram in which two forces are acting on a block.

We can write -

Force 1 on block [F1] = 4 a[x]

Force 2 on block [F2] = 8 (- a[x]) = - 8 a[x]

Resultant of forces [F] = [F1] + [F2] = 4 a[x] + ( - 8 a[x]) = - 4 a[x]

Now, we know that -

F = MA

A = F/M

In vector form, acceleration will be -

[A] = - 1/m × (4 a[x])

[A] = -1/2 × (4 a[x])

[A] = - 2 a[x]

Therefore, the acceleration of the block will be -2 m/s² in the backward direction.

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The microbial growth medium that would be used to sample for Fungi bacterial growth in sterile environment is : ( B ) Trypticase soy agar

A growth medium is a solid or liquid which is designed to support the growth of population such as microorganism through cell proliferation. A growth medium contains nutrients which support the growth of the microorganisms.

A growth medium which will support the growth of both fungi and bacteria growth is a Trypticase soy agar medium.

Hence we can conclude that The microbial growth medium that would be used to sample for Fungi bacterial growth in sterile environment is : Trypticase soy agar

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Answer:

76.86g

Explanation:

the molar mass of sulfur trioxide is about 80.06, so 80.06 grams per mol, 0.96*80.06=76.86g

Answer: its supposed to be  18.78%.

Explanation:

Answer:

chemical energy transgormation takes place during cellular respiration

The molarity of a solution that contains 35.00 g of CuSO4 dissolved in 250.0 mL of water is 0.88M.

The molarity of a solution can be calculated using the following formula:

Molarity = no of moles/volume

According to this question, a solution consists of 35.00 g of CuSO4 dissolved in 250.0 mL of water.

no.of moles of CuSO4 = 35g ÷ 159.6g/mol

no. of moles of CuSO4 = 0.22 moles

Therefore; molarity of CuSO4 solution is calculated as follows:

M = 0.22 ÷ 0.25

M = 0.88M

Therefore, the molarity of a solution that contains 35.00 g of CuSO4 dissolved in 250.0 mL of water is 0.88M.

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The enthalpy refers to the thermodynamic characteristics that have chemical systems associated with their internal energy.

The enthalpy refers to the thermodynamic features of the chemical systems associated with the energy of such systems.

Enthalpy is used to estimate the ability of the system to perform work and release energy in the form of heat.

It is well known that different types of chemical reactions may exhibit different enthalpies, which can be estimated by the internal energy, pressure of the system and volume.

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Answer:

Here you are <3

Explanation:

I attached the one I just submitted

Now

[tex]\\ \rm\rightarrowtail Q=mc\delta T[/tex]

[tex]\\ \rm\rightarrowtail Q=20(40)(0.13)[/tex]

[tex]\\ \rm\rightarrowtail Q=800(0.13)[/tex]

[tex]\\ \rm\rightarrowtail Q=104J[/tex]

Hydrocarbons are composed of hydrogen and carbon only and the hydrocarbon produced will differ according to their mole ratio.

Hydrocarbons are compounds composed only of carbon and hydrogen.

Hydrocarbons are very large families of compounds which have a common property of being combustible.

Hydrocarbons include:

The mole ratio of the carbon to hydrogen in each type of hydrocarbon differs.

Therefore, starting with 10 carbon and 3 Hydrogen, the hydrocarbon produced will differ according to their mole ratio.

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Answer:

I have this work and I'm in 5th grade

Explanation:

Answer:

Archaea live in extreme environments, while bacteria can be found in most places on Earth.

Explanation:

Doing a the test now and this is the answer.

The IUPAC name of the compound shown in the image is 4-bromo butyne.

IUPAC is a body in chemistry that stands for International Union of Pure and Applied Chemistry.

IUPAC functions in the naming of organic compounds in chemistry.

According to the image in this question, the functional group of the compound is a triple carbon bond meaning that it is an alkyne.

Bromine is attached to the fourth carbon, hence, the IUPAC name of the compound is 4-bromo butyne.

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Answer:

C.

Explanation:

✿————✦————✿————✦————✿

Why C? Because-

In an electrolytic cell, the positive electrode is known as anode, while the negative electrone is known as cathode.

This is a type of cell that requires external electrical energy to work or to trigger a chemical reaction. This is only possible trough two types of electrodes: anode and cathode.

The key differene is the type of charge, cathodes are negatively charged, while anode are positively charged.

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Answer:

Trachea is not the part of digestive system

Explanation:

Trachea is the part of the respiratory system