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Virty [35]
4 years ago
13

How could using ethanol as a fuel affect the carbon dioxide level in the atmosphere is this good or bad for the environment PLEA

SE HELP ME, IT'S FOR MY NATIONAL 5 ASSIGNMENT
Chemistry
1 answer:
d1i1m1o1n [39]4 years ago
8 0
Hey there you see ethonol i beliive is a corn based fuel and scientists are saying that it is more healthy for are invirment  but not 100% green.however this fuel is not a renewable resource it is still widely abundent because we have corn felids. but i think it is not the smartest investment because if we have a big storm or cropos wont grow anymor than we would not have cars therfore limiting transportationn  which setting a huge deppresion. gkad you asked i hads something simmilar to this on my ssvec  assignment

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Convert .4076grams into moles<br> Element is copper
Artist 52 [7]

Answer:

0.00642mole

Explanation:

Molar Mass of Cu = 63.5g/mol

Mass of Cu from the question = 0.4076g

Number of mole =?

Number of mole = Mass /Molar Mass

Number of mole of Cu = 0.4076/63.5 = 0.00642mole

8 0
4 years ago
What is the final pH of a solution obtained by mixing 300 ml of 0.4 M NH3 with 175 ml of 0.3 M HCl? (Kb = 1.8 x 10-5) Show all o
MariettaO [177]

Answer:

pH of the final solution = 9.15

Explanation:

Equation of the reaction: HCl + NH₃ ----> NH₄Cl

Number of moles of  NH₃ = molarity * volume (L)

= 0.4 M * (300/1000) * 1 L =  0.12 moles

Number of moles of HCl =  molarity * volume (L)

= 0.3 M * (175/1000) * 1 L = 0.0525 moles

Since all he acid is used up in the reaction, number of moles of acid used up equals number of moles of NH₄Cl produced

Number moles of NH₄Cl produced =  0.0525 moles

Number of moles of base left unreacted =  0.12 - 0.0525 = 0.0675

pOH = pKb + log([salt]/[base])

pKb = -logKb

pOH = -log (1.8 * 10⁻⁵) + log (0.0525/0.06755)

pOh = 4.744 + 0.109

pOH = 4.853

pH = 14 - pOH

pH = 14 - 4.853

pH = 9.15

Therefore, pH of the final solution = 9.15

3 0
3 years ago
Sample X has a mass of 22.7 g and reacts with sample Y to form sample XY with a total mass of 86.9 g. What is the mass of sample
kolezko [41]

Answer:

\large \boxed{\text{64.2 g}}

Explanation:

                 X  +  Y ⟶ XY

mass:  22.7 g   x     86.9 g

According to the Law of Conservation of Mass, the mass of the product must equal the mass of the reactants.

\begin{array}{rcl}\text{22.7 g} + x & = & \text{86.9 g}\\x & = & \text{86.9 g} - \text{22.7 g}\\& = & \textbf{64.2 g}\\\end{array}\\\text{The mass of Y is $\large \boxed{\textbf{64.2 g}}$}

8 0
3 years ago
Calculate the hydrogen-ion concentration [H+] for the aqueous solution in which [OH–] is 1 x 10–11 mol/L. Is this solution acidi
Pepsi [2]
POH = -log [OH-]
pOH = - log (1 x 10^-11)
pOH = -(-11) = 11

pH + pOH = 14
pH + 11 = 14
pH = 14 - 11 = 3
6 0
3 years ago
Read 2 more answers
Two electrons are found in the same atom. One electron has the quantum number set (4, 1, 0, +½), and the other electron has the
Kruka [31]
Quantum states of electrons are usually written in terms of four numbers: the principle quantum number (n), the angular momentum azimuthal number (L), the magnetic quantum number (ml), and the spin projection number (ms). The quantum number set (4,1,0,+1/2) and (4,1,1,+1/2) share the same principle quantum numbers and therefore both sit in the n=4 electron shell. 
5 0
3 years ago
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