C5H12 + O2 = CO2 + H2O
If 84.3 grams of C5H12 react according to the above equation and the % yield is 94% find the actual yield of grams of carbon dioxide

Answer:

It should be B

Explanation:

because I just searched it up if I'm wrong I'm wrong

Answer:transpiration just took the test

Explanation:

100%

Answer:

[tex]d=2.15g/mL[/tex]

Explanation:

Hello there!

In this case, since the density of the metal is computed as shown below:

[tex]d=\frac{m}{V}[/tex]

We need to calculate the volume of the solid by subtracting the final volume and the initial volume of water:

[tex]V=54.10mL-45.50mL\\\\V=8.60mL[/tex]

Thus, we obtain:

[tex]d=\frac{18.5g}{8.60mL}\\\\d=2.15g/mL[/tex]

Best regards!

The chemical reaction at STP results in a volume of HBr gas that is roughly 3.09E3 L.

In a chemical reaction, reactants undergo a chemical reaction and transform into products through a chemical process. For instance, when humans breathe in oxygen, it combines with glucose to create carbon dioxide, water, and energy.

The temperature is 273.15 K and the pressure is 1 atm at STP (standard temperature and pressure).

The ideal gas law can be rearranged to account for V:

V = (nRT) / P

Substituting the values we are aware of:

n = 138 mol

R = 0.0821 L·atm/(mol·K)

T = 273.15 K

P = 1 atm

V = (138 mol * 0.0821 L·atm/(mol·K) * 273.15 K) / 1 atm

V = 3,092.1 L

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Answer:

[tex]\boxed{\bold { \large { \boxed {KE=\frac{1}{2} mv^2 \ , \ PE=mgh}}}}[/tex]

Explanation:

Kinetic energy formula

[tex]\displaystyle KE=\frac{1}{2} mv^2[/tex]

Potential energy formula

[tex]\displaystyle PE=mgh[/tex]

[tex]\displaystyle KE \Rightarrow \sf kinetic \ energy \ (J)[/tex]

[tex]\displaystyle PE \Rightarrow \sf potential \ energy \ (J)[/tex]

[tex]\displaystyle m \Rightarrow \sf mass \ (kg)[/tex]

[tex]\displaystyle v \Rightarrow \sf velocity \ (m/s)[/tex]

[tex]\displaystyle g \Rightarrow \sf acceleration \ of \ gravity\ (m/s^2)[/tex]

[tex]\displaystyle h \Rightarrow \sf height \ (m)[/tex]

Answer:

mNa₂C₂O₄ = 0.4489 g

Explanation:

This is a problem of stechiometry. in this case, we need to find the mole ratio between the permanganate solution and the oxalate. This can be seen in the balanced reaction which is the following:

2KMnO₄ + 8H₂SO₄ + 5Na₂C₂O₄---> 2MnSO₄ + 8H₂O + 10CO₂ + 5Na₂SO₄ + K₂SO₄

According to this balanced reaction, we have a mole ratio of 2:5 between permanganate and oxalate, so, the first thing to do here is calculate the moles of the permanganate needed to reach the endpoint of this titration:

n = M * V

Replacing we have:

nKMnO₄ = 0.0335 mol/L  * 0.040 L = 0.00134 moles

With these moles, and the above mole ratio, we can determine the moles of the oxalate:

2 moles KMnO₄ -------> 5 moles Na₂C₂O₄

0.00134 moles ---------> X

X = 0.00134 * 5 / 2

nNa₂C₂O₄ = 0.00335 moles

Finally, with the molecular mass of Na₂C₂O₄, we can determine the mass of the oxalate:

Molecular weights:

Na: 23 g/mol;   C: 12 g/mol;    O: 16 g/mol

MMNa₂C₂O₄ = (23*2) + (2*12) + (4*16) = 134 g/mol

mNa₂C₂O₄ = nNa₂C₂O₄ * MM

mNa₂C₂O₄ = 0.00335 * 134

Hope this helps

Answer water

Explanation:

Answer:

D. Electrical energy

Explanation:

I assume you are talking about an electrical current.

(These are by what I know and are simplified, not an exact definition)

A. Mechanical energy is energy that something has because of motion.

B. Magnetism is the attracting and repulsing forces between magnets.

C. Geothermal energy is heat inside of the Earth. Used as source of power.

D. Electrical energy is the result of an electric charge.

Answer:

Magnesium Phosphide has a formula of Mg3P2 . Magnesium is a metal cation with a charge of Mg+2. Phosphorus is a nonmetal anion with a charge of P−3. In order to bond ionically the charges must be equal and opposite

Explanation:

Answer:

jjsydydbbeyxgxhx

Explanation:

nnhejjej

Answer:

It can come from unstable atoms that undergo radioactive decay, or it can be produced by machines. Radiation travels from its source in the form of energy waves or energized particles. There are different forms of radiation and they have different properties and effects

Answer:

Lithosphere, Hydrosphere, atmosphere

The set of Earth components that is arranged in order from solid to liquid to gas is D. lithosphere, hydrosphere, atmosphere

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Answer:

160.000 años corresponde a 16.000 décadas.

Explanation:

Para resolver correctamente el ejercicio debemos plantear la regla de tres simple de la siguiente manera:

1 década equivale a 10 años; A cuantas decadas equivalen 160.000 años?

1 década→10 años

          x    ←160.000 años

Debemos multiplicar 160.000 por 1 y luego dividir entre 10 ;

x=([tex]\frac{160.000x1}{10}[/tex])=16.000 décadas; en notación científica sería 16x10^3.

Respuesta: 160.000 años corresponde a 16.000 décadas.

Answer:

1.276 moles

Explanation:

molar mass of H2SO4 = 2(1)+(32)+4(16) = 98 g

So, there are (125g)(1 mol/98g) = 1.276 moles

1.276 moles are in 125 g of H[tex]_2[/tex]SO[tex]_4[/tex]. A mole is indeed a unit that enables us to correlate the mass of a material with its components.

It is defined as the amount of any material that has the same number of basic units as there are in a precisely measured sample of 12C that weighs 12 g. Latin's word for pile, stack, or assemblage is "mole." The number of entities that make up a mole was discovered via experimentation to be 6.022 X 1023.

A mole is indeed a unit that enables us to correlate the mass of a material with its components. The total of the masses of all the atoms that make up one mole of a molecule, expressed in grams, is what is known also as molecular mass or molar mass. A substance's molar mass may be calculated by multiplying its given mass by its g/mol density.

molar mass of H[tex]_2[/tex]SO[tex]_4[/tex] = 2(1)+(32)+4(16)

                                    = 98 g

mole= (125g)(1 mol/98g)

       = 1.276 moles

Therefore, 1.276 moles are in 125 g of H[tex]_2[/tex]SO[tex]_4[/tex].

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Answer: Salt water is a solution because it has these two characteristics: it has the same concentration of each of its parts throughout the solution, and it can be separated by some physical process.

Explanation: Literally learning about this in my science class XD

Answer:

As altitude increases, the amount of gas molecules in the air decreases the air becomes less dense than air nearer to sea level.

Explanation:

Answer:

solution is a homogeneous mixture of two or more component

Answer:

B) heterogeneous mixture

Explanation:

Answer:

English please

Explanation:

Answer:

B) Cations lose electrons having a charge of positive.

Explanation:

Hello there!

In this case, it is widely known that ions are classified as positive cations and negative anions, since the former is produced when a metal loses electrons and the latter when a nonmetal gains electrons; in such a way, the correct choice is:

B) Cations lose electrons having a charge of positive.

Best regards!

Answer:

Either B or A

Explanation:

The other answer said B, and I said either B or A, so anyone who is currently cheating on a chemistry test, try B

Answer: The half-life of the compound is 93 minutes

Explanation:

Expression for rate law for first order kinetics is given by:

[tex]t=\frac{2.303}{k}\log\frac{a}{a-x}[/tex]

where,

k = rate constant  

t = age of sample

a = let initial amount of the reactant =100

a - x = amount left after decay process = (100-36) = 64

a) for completion of 36 % of reaction

[tex]60=\frac{2.303}{k}\log\frac{100}{100-36}[/tex]

[tex]k=\frac{2.303}{60}\log\frac{100}{64}[/tex]

[tex]k=0.0074min^{-1}[/tex]

b) for completion of half life:

Half life is the amount of time taken by a radioactive material to decay to half of its original value.

[tex]t_{\frac{1}{2}}=\frac{0.693}{k}[/tex]

[tex]t_{\frac{1}{2}}=\frac{0.693}{0.0074min^{-1}}=93min[/tex]

The half-life of the compound is 93 minutes

Answer:

53.6 g

Explanation:

Step 1: Write the balanced equation

2 Zn + Pb(SO₄)₂ ⇒ 2 ZnSO₄ + Pb

Step 2: Calculate the moles of ZnSO₄ produced from 0.332 moles of Zn

The molar ratio of Zn to ZnSO₄ is 2:2. The moles of ZnSO₄ produced are 2/2 × 0.0332 mol = 0.0332 mol.

Step 3: Calculate the mass corresponding to 0.332 moles of ZnSO₄

The molar mass of ZnSO₄ is 161.44 g/mol.

0.332 mol × 161.44 g/mol = 53.6 g

Answer:

40g

Explanation:

equation; H2 + Cl2 ---- 2HCl

mole ratio; 1 mole 1 mole 2 moles

before reaction;20g 20g 0g

after reaction; 20g 20g 40g

Answer:Calcium hydroxide is a polar compound. 2. Carbonates are insoluble in water unless it is combined with NH4+ or any group 1A ion. It is a colorless crystal or white powder and is produced when quicklime (calcium oxide) is mixed, or slaked with water.Ca(OH)2 is an ionic compound, in which Ca is the cation and OH is the anion. Ca (calcium) has a charge of 2+, since it is in group 2 on the periodic table.

Explanation: hope this helps and have a great night

Answer:

A.? I think it is A hope it helps

Answer:

Yes

Explanation:

One of the top goals of genetic engineering is the improvement of health. Imagine a world without the threat of AIDS or cancer. Those working in the genetics field hope that manipulating the genes of humans will one day enable science to prevent people from contracting these potentially deadly diseases.