solve this questions please​

Answer:

the answer is 51 L please brainliest

Explanation:

The volume of  2. 0 moles of nitrogen at 720 torr and 20. 0°C is 51 L

Using the formulae,   PV=nRT

Recall that

1 torr= 0.00132atm

Such that

P=720torr =720 x  0.00132atm= 0.95atm

Also,

V= 20°C= 20+273= 293K

R=0.08206L-atm/mol-K

Solving, we have that

PV=nRT

0.95×V= 2×0.08206×293

V= 2×0.08206×293/ 0.95

V= 50.62L

Rounded to  51 L.

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evaporation is the process of liquid water changing to water vapor

Answer:

it either plant store excess or sugar and starches I'll double check to see which one is correct

Answer:

It's a combination reaction

[tex] \underline{ \underline{ \texttt{Combination reaction }}}[/tex]

What is combination reaction?

a reaction in which two reactants combine to form one product.

Why is it combination reation?

As you can see phosphorus and oxygen combined to form Phosphorus trioxide.

Answer:

There are 2.99 moles or 3 moles of Sulfur in 96 grams

Explanation:

You divide 96 by the atomic weight of Sulfur which is 32.065. For every 32.065 grams of Sulfur you will get 1 mole of Sulfur. The answer should be 2.99 or 3 moles of Sulfur.

The partial pressure of the mixture is equal to the sum of the individual pressure.The partial pressure of the remaining gas measured will be 0.8 atm.

The partial pressure of the mixture is equal to the sum of the individual pressure of the gases present in ther mixture.

The given date in the problemis

Total pressure of the mixture=P

P₁ is the partial pressure of gas 1 (N₂) =1.2 atm

P₂  is the partial pressure of gas 2(F₂)= 2.0 atm

P₃ is the partial pressure of the gas 3(H₂)=1.0 atm

P₄ Is the partial pressure of the gas 4=?

From the defination

P=P₁ +P₂ +P₃+P₄

5=1.2+2.0+1.0+P₄

P₄=0.8 atm

Hence the partial pressure of the remaining gas that was not measured will be 0.8 atm.

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Answer:

C

Explanation:

aseKual reproduction

Budding is a form of aseKual reproduction that results from the outgrowth of a part of a cell or body region leading to a separation from the original organism into two individuals

Answer:

True

Explanation:

Answer:

S + HNO3 = H2SO4 + NO2 + H2O

Explanation:

Answer:

Based on stoichiometry HNO3 to H2O is 6:2

Use 9 grams to find the moles of HNO3

9 grams/63g/mol=0.143 moles of HNO3

HNO3:H2O

6:2

0.143*2/6=0.048

H2O moles is 0.048moles

Mass of water =0.048moles*18g/mol=0.864g

To the nearest tenth=0.9grams

Explanation:

I think this is right

Answer:

High kinetic energy.

Explanation:

If an object has a high temperature, that means the atoms of the object have a high kinetic energy. If an object, however, has a low temperature, that means the atoms of the object have a low kinetic energy.

Based on the formula for calculating quantity of Heat, the student requires the mass, temperature change and the specific heat capacity of the reaction mixture.

The enthalpy change of a reaction is the amount of heat evolved or absorbed when reactant molecules react to form products.

In the use of a calorimetry to determine the enthalpy of a reaction, the law of conservation of energy is applied.

The quantity of Heat is calculated using the formula below:

Therefore, in addition to the masses of the solutions and the temperature change, the student requires the specific heat capacity of the reaction mixture.

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Answer:

gonna check them rn :) youre not d u mb dont worry (:

Explanation:

The group 2 ions are in the second column in the periodic table, for example Be, Mg and Ca

The group 3 ions are in the third column in the periodic table, for example B, Al and Ga

It's the same thing for the rest of the groups

Ions either lose or gain electrons to have a full outer shell, just like the noble gases

metal atoms lose electrons from their outer shell to form positively charged ions

From groups 1 to 3 the charge is the same as the group number

Non metals gain electrons on their outer shell to form negatively charged ions

From groups 5 to 7 the charge is 8 subtract the group number

Example: what is the charge for group 6 ions?

8 - 6 = 2, and the charge is negative so 2-

The phrase that defines bond energy is the energy required to break a chemical bond.

Bond energy is amount of energy needed to break the atoms involved in a chemical bond into free atoms.

The bond energy of each molecule varies with the type of bond in the molecule. Stronger bonds require a higher bond energy and vice versa.

Therefore, the phrase that defines bond energy is the energy required to break a chemical bond.

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Answer:

D. Energy input needed to break bonds of reactants.

Explanation:

Activation energy is the minimum amount of energy required to initiate a chemical reaction by breaking the bonds of the reactants. It is the energy needed to reach the transition state, where the reaction can proceed, and new chemical bonds can be formed to create the products. The activation energy is the energy barrier that must be overcome for a reaction to occur.

Once the reactants have enough energy to overcome the activation energy, the reaction proceeds spontaneously, and energy is released when new bonds form in the products.

PS. I took the quick check.

Concentration

mol (n)= M x V

[tex]\tt n=3.2\times 2.6=8.32[/tex]

Answer:

The pressure of the gas is increased by reducing the volume at constant temperature. ... The average velocity of the molecules is increased by a factor of 2.

Explanation:

In the system at equilibrium liquid water-water vapor, if liquid water is added to the system, more liquid water molecules will change to water vapor until a new equilibrium is reached.

If a constraint (such as a change in pressure, temperature, or concentration of a reactant) is applied to a system in equilibrium, the equilibrium will shift so as to tend to counteract the effect of the constraint.

Let's consider the following system at equilibrium.

H₂O(l) + heat ⇄ H₂O(g)

Which statement best describes what will happen if liquid water is added to the system?

In the system at equilibrium liquid water-water vapor, if liquid water is added to the system, more liquid water molecules will change to water vapor until a new equilibrium is reached.

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Answer:

More liquid water molecules will change to water vapor until a new equilibrium is reached. Yes. This will happen to counteract the excess of liquid water.

All of the liquid water molecules that are added will become water vapor. No. Some liquid molecules will change to vapor to attain a new equilibrium.

More water vapor molecules will change to liquid water until a new equilibrium is reached. No. The change will happen in the inverse sense.

All of the liquid water molecules that are added will remain liquid water. No. Some liquid molecules will change to vapor to attain a new equilibrium.

Explanation:

Answer:

≈29.94 [°C].

Explanation:

all the details are in the attachment, the answer is underlined with orange colour.

Answer:

[tex] ZnSO_4 + Li_2CO_3 \longrightarrow ZnCO_3 + Li_2SO_4 [/tex]

Explanation:

Here a reaction is given to us and we need to balance the equation . The given reaction is ,

[tex] ZnSO_4 + Li_2CO_3 \longrightarrow ZnCO_3 + Li_2SO_4 [/tex]

So here , we can make a table as ,

[tex]\begin{array}{c|c} \\ LHS & RHS \\\\ Zn = 1 & Zn = 1 \\\\ SO_4 = 1 & SO_4 =1\\\\ Li = 2 & Li= 2 \\\\ CO_3 = 1 & CO_3 = 1 \end{array}[/tex]

We can see that the number of elements and ions is same on both LHS and RHS . Hence the reaction is already balanced .

Therefore the final reaction would be same as before that is ,

[tex] ZnSO_4 + Li_2CO_3 \longrightarrow ZnCO_3 + Li_2SO_4 [/tex]

I hope this helps .

Answer:

Explanation:

1)The charge of one electron is given by

           1 e = - 1.6 * 10-19 C

Then – 1 C = 1 e / ( 1.6 * 10-19 )

                 = 6.25 * 1018 e

So one-coulomb charge has 6.25 * 1018 electrons

2)Let q1 and q2 be two charges separated by a distance r

Then q1 = - 40 µC = - 40 * 10-6 C

And    q2 = 108 µC = 108 * 10-6 C

The collection of  6.25 × 10¹⁸ electrons has a charge of approximately 0.100125 coulombs.

Let's break down the calculation step by step;

Charge of an Electron: The charge of a single electron is approximately 1.602 × 10⁻¹⁹ coulombs. This value represents the fundamental charge carried by an electron.

Number of Electrons: You have a collection of 6.25 × 10¹⁸ electrons. This number tells us how many electrons are present in the collection.

Calculating Total Charge: To find the total charge of the collection of electrons, we need to multiply the number of electrons by the charge of each electron:

Total charge = Number of electrons × Charge of each electron

Total charge = 6.25 × 10¹⁸ electrons x 1.602 × 10⁻¹⁹ C/electron

Calculating the Product: Multiply the numerical values and add the exponents:

Total charge = 1.00125 x 10⁻¹ C.

Final Result: The calculated total charge is approximately 0.100125 coulombs

So, the collection of  6.25 × 10¹⁸ electrons has a charge of approximately 0.100125 coulombs. This means that the combined effect of the individual charges of the electrons in the collection results in an overall charge of 0.100125 coulombs.

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#SPJ3

Answer:

"Soaps are made from natural ingredients, such as plant oils (coconut, vegetable, palm, pine) or acids derived from animal fat. Detergents, on the other hand, are synthetic, man-made derivatives. While soap is limited in its applications, detergents can be formulated to include other ingredients for all sorts of cleaning purposes. Perhaps the most common and versatile of these ingredients are surfactants … surface active agents.

The main difference between soap and detergent is the ingredients. Soaps are made with biodegradable ingredients such as oils, lye and fats. ... Both clean clothes well, but detergents are more effective on stains and with brightening clothes. However, soap is kinder on the environment and skin. "

Hope this helps

Excerpt from textbook

Explanation:

a.

P. When potassium reacts with hydrochloric acid, the salt produced is potassium chloride and sulphur-di-oxide gas is evolved after performing these.

Q.Addition of acid with metal gives salt and hydrogen gas. When dilute Hydrochloric acid is added to iron filings, so chloride & hydrogen gas is produced.

R. and if you talk about gold, gold do not react easily with HCL

b.

# in ascending order P -> Q -> R

c.

# I think its potassium chloride reaction.

hope this helps you

have a great day :)

Acid-base conjugate pair forms when the element donates a proton and another species acquires it. [tex]\rm H_{2}O[/tex] and [tex]\rm H_{3}O^{+}[/tex]are the base-conjugate acid pair.

Acids are the species or element and compounds that donates proton or hydrogen ions to form a conjugate base.

Bases are the elements or compounds that acquires protons or hydrogen ions and form a conjugate acid pair.

Conjugate acids and bases are the species or the products formed when the protons or hydrogen ions are increased or decreased in their chemical structures.

The reaction can be shown as,

[tex]\rm H_{2}PO_{4}^{-} + H_{2}O \leftrightarrows H_{3}O^{+} + HPO_{4}^{2-}[/tex]

From the reaction, it can be said that the water molecule acquired the hydrogen or the proton ions and the hydronium ion produced as a result is the conjugate acid of the water base.

Therefore,  [tex]\rm H_{2}O[/tex]and [tex]\rm H_{3}O^{+}[/tex]are the base-conjugate acid pair.

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It's A. H sub2 O and H sub3 O+

Answer:

3.33 mol

Explanation:

1 g of oxygen is 0.062502343837894 mol

53.3 * 0.062502343837894

3.3313749265597505 mol

Answer:

false

Explanation:

warm air rises

hope this helps love

Answer:

i think that False would be the correct answer

Explanation:

so so so sorry if this is wrong

26.7% is the percent composition by mass of sulfur in a compound named magnesium sulfate. Explanation: Molar mass of compound = 120 g/mol.