What is an Independent Variable (IV)? *

Explanation:

The new pressure can be found by using the formula for Boyle's law which is

[tex]P_1V_1 = P_2V_2 \\[/tex]

Since we're finding the new pressure

[tex]P_2 = \frac{P_1V_1}{V_2} \\[/tex]

We have

[tex]P_2 = \frac{25 \times 1}{125} = \frac{25}{125} = \frac{1}{5} = 0.2 \\ [/tex]

We have the final answer as

Hope this helps you

Answer:

The theoretical yield of sulfur trioxide is 88.0 Litres

Explanation:

The chemical reaction occurring between oxygen and sulfur dioxide is given in the chemical equation below :

2SO₂ + O₂ ----> 2SO₃

From the equation of reaction, 2 moles of sulfur dioxide reacts with 1 mole of oxygen to produce 2 moles of sulfur trioxide.

Volume of 1 mole of a gas at STP is 22.4 L

Number of moles of gas in 44.0 L = 44.0/22.4 moles

1 mole of oxygen reacts with 2 moles sulfur dioxide to produce 2 moles of sulfur trioxide;

44/22.4 moles of oxygen will react with excess sulfur dioxide to produce 2 × 44/22.4 moles of sulfur trioxide = 88/22.4 moles of sulfur trioxide

88/22.4 moles of sulfur trioxide will have a volume of 88/22.4 × 22.4 Litres = 88.0 Litres

Therefore, the theoretical yield of sulfur trioxide is 88.0 Litres

Answer:

Probably around 6 because the ph of hydrochloric acid is 3

Explanation:

Answer:Plant A does best in high salinity water and soil, and plant B does best in low salinity water and soil.

Explanation: Because plant A in a hurricane dost bad bot Plant B doest well

Answer:

Plant A does best in high salinity water and soil, and plant B does best in low salinity water and soil

Explanation:

This is due to hurricanes decreasing salinity of water while Rainstorms increase salinity.

Answer:

B. 4Na + O2 → 2Na2O

Explanation:

Got it right on the test :)

For balanced  equation the mass of reactant is exactly equal to the mass of product. atoms of reactant equal to the atoms of product is called as balanced equation.

The law of conservation of mass, which states that "the total mass of all the products of reaction in a chemical reaction is equal to the total mass of all the reactants," is satisfied by balancing chemical equations.

A balanced chemical equation, in which the masses of the reactants and products are equal, contains the same amount of atoms of each element on both sides of the equation.

4Na + O₂ ⇒  2Na₂O₂

In this reaction in reactant there are four number of sodium atom and in product also four number of sodium atom. Similarly total number of oxygen at reactant is equal to the total number of oxygen at product.

Thus, option B is correct.

To learn more about balanced equation follow the link;

https://brainly.com/question/7181548

#SPJ2

D melting ice cream because if u know what a physical change is its a change that you can reverse chimical change are changes you cant reverse so u can freeze back ice cream so :D

Answer:

n = 2

Explanation:

To solve this question we must find the moles of the anhydrate CuCl2 (Obtained from the mass of 19.72g) and the moles of water (Obtained from the 5.32g):

Moles CuCl2 -Molar mass: 134.45g/mol-

19.72g * (1mol / 134.45g) = 0.14667 moles

Moles H2O -Molar mass 18.01g/mol-

5.32g * (1mol / 18.01g) = 0.2954 moles

The ratio of moles of H2O:CuCl2 is:

0.2954 moles / 0.14667moles = 2.0

That means n = 2 and the formula is:

CuCl2∙2H2O

Answer:

See Explanation

Explanation:

Let us closely consider the electronic configuration of manganese atom, Manganese II ion and manganese III ion. This will give a clue of the answer.

Manganese: [Ar] 3d5 4s2

Manganese II: [Ar] 3d5

Manganese III: [Ar] 3d4

Now, let us remember that the d orbital contains a maximum of ten electrons. Hence, the electronic configuration of Mn^2+, [Ar] 3d5 reflects a half filled d- orbital which is known to be unusually stable(half-filled orbitals are known to possess unusual stability just as fully filled orbitals do).

The same can not be said about Mn^3+. Hence, Mn^2+ is more stable than Mn^3+.

Answer:

A. 1:1

Explanation:

The ratio of metal cationic (+) atom to nonmetal anionic (-) atom in the sodium and bromine compound is 1:1 because sodium needs to lose one electron and bromine needs one electron to become stable and complete its outermost shell. When sodium lose electron, it become cation and gain +1 charge while on the other hand, the bromine accept one electron and become anion and gain -1 charge so that's why we can say that there is 1:1 of metal cationic (+) atom to nonmetal anionic (-) atom in the sodium and bromine compound.

Answer:

Explanation:

The pH of a solution can be found by using the formula

[tex]pH = - log ([ {H}^{+} ])[/tex]

From the question

[H+] = 0.045 M

We have

[tex]pH = - log(0.045) \\ = 1.346787...[/tex]

We have the final answer as

Hope this helps you

Answer:

1.35

Explanation:

Answer:

The relative molecular mass of ammonium nitrate is 80 gm

Explanation:

[tex]M_{NH4NO3}[/tex] = 14 + (4 × 1) + 14 + (16 × 3) = 80 (gm)

Answer:

80L

Explanation:

V1/T1 = V2/T2

V2 = V1 T2/T1

T1 = 300K

V1 = 60L

T2 = 400K

V2 = ?

V2 = V1 T2/T1

V2 = (60L)(400K) / (300K)

V2 = 80L

Explanation:

One atom of carbon (2.4) combines with two atoms of oxygen (2.6) to form the compound carbon dioxide CO2 (only the outer shell of carbon's electrons are shown). ... The carbon dioxide molecule is held together by the strong C=O. carbon–oxygen double covalent bonds by sharing electrons.

Explanation:

Your chemical equation should look like this:

Li3PO4 + AlF3 --> 3LiF + AlPO4

This is the balanced equation for a double-displacement reaction

Answer:

no

Explanation:

because the characters are invalid

Answer:

no

Explanation:

because they are not valid

Answer:

Sorry I really don't know but can you help with one of my question I posted please thanks.

Answer:

1 hour

Explanation:

Travelling at 15 miles per hour will get take 1 hour to travel 15 miles.

Answer:

2.5 moles of Al

Explanation:

We'll begin by calculating the number of mole in 127 g of Al₂O₃. This can be obtained as follow:

Mass of Al₂O₃ = 127 g

Molar mass of Al₂O₃ = 101.961 g/mol

Mole of Al₂O₃ =?

Mole = mass / molar mass

Mole of Al₂O₃ = 127 / 101.961

Mole of Al₂O₃ = 1.25 mole

Finally, we shall determine the number of mole of Al that reacted. This can be obtained as follow:

4Al + 3O₂ —> 2Al₂O₃

From the balanced equation above,

4 moles of Al reacted to produce 2 moles of Al₂O₃.

Therefore, Xmol of Al will react to produce 1.25 moles of Al₂O₃ i.e

Xmol of Al = (1.25 × 4)/2

Xmol of Al = 2.5 moles.

Thus, 2.5 moles of Al is needed for the reaction.

Answer: The value of equilibrium constant, K, is [tex]7.74 \times 10^{-4}[/tex].

Explanation:

The reaction equation is as follows.

[tex]2SO_{3}(g) \rightleftharpoons 2SO_{2}(g) + O_{2}(g)[/tex]

Now, the expression for equilibrium constant of this reaction is as follows.

[tex]K = \frac{[SO_{2}]^{2}[O_{2}]}{[SO_{3}]^{2}}[/tex]

Substitute the given values into above expression as follows.

[tex]K = \frac{[SO_{2}]^{2}[O_{2}]}{[SO_{3}]^{2}}\\= \frac{(\frac{0.210}{15.4})^{2} \times (\frac{0.354}{15.4})}{(\frac{8.51 \times 10^{-2}}{15.4})}\\= 7.74 \times 10^{-4}[/tex]

Thus, we can conclude that the value of equilibrium constant, K, is [tex]7.74 \times 10^{-4}[/tex].

Answer:

Your answer choice is D

Explanation:

I just got it right on USATestprep :))

Answer:

211.2 J

Explanation:

Applying

Q = cm(t₁-t₂)............... Equation 1

Where Q = Amount of heat, c = specific heat capacity of copper, m = mass of copper, t₁ = initial temperature, t₂ = final temperature.

From the question,

Given: c = 0.384 J/g°C, m = 10 g, t₁ = 0°C, t₂ = 55°C

Substitute these value into equation 1

Q = 0.384×10×(55-0)

Q = 0.384×10×55

Q = 211.2 J

Answer:

Explanation:

Wind is more of an efficient power source than solar. Compared to solar panels, wind turbines release less CO2 to the atmosphere, consume less energy, and produce more energy.

Answer:

The temperatures on Earth increase

Explanation:

more energy results in more heat.

Answer:

3.45 L

Explanation:

Temperature and volume are linearly related (when one increases or decreases, so does the other).

Convert the temperature to Kelvin:

50 °C = 323 K

100 °C = 373 K

To find the rate of change, divide 373 by 323 to get roughly 1.15

Multiply the amount of liters by this factor to get your answer

Answer:

Bleach is more basic while human blood is slightly basic

Explanation:

The higher the number on the pH scale, the more basic. Therefore, since bleach's number is higher than the blood, it is more basic.

Answer:

C

Explanation:

Answer:

Very true

Explanation:

Answer:

[tex]Al_2(SO_4)_3+3Mg(NO_3)_2\rightarrow 2Al(NO_3)_3+3MgSO_4[/tex]

Explanation:

Hello there!

In this case, for the given reactants side, we infer this is a double replacement reaction because all the cations and anions are switched around as a result of the chemical change, we infer that the products side include aluminum with nitrate and magnesium with sulfate as shown below:

[tex]Al_2(SO_4)_3+Mg(NO_3)_2\rightarrow Al(NO_3)_3+MgSO_4[/tex]

However, we need to balance since unequal number of atoms are present at both sides, thus, we do that as shown below:

[tex]Al_2(SO_4)_3+3Mg(NO_3)_2\rightarrow 2Al(NO_3)_3+3MgSO_4[/tex]

Thus, we make 6 Al atoms, 3 S atoms, 3 Mg atoms and 30 O atoms on each side in agreement with the law of conservation of mass.

Regards!