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Ira Lisetskai [31]
3 years ago
12

Calculate the moles of FeFe in 1.17×10221.17×1022atoms of FeFe.

Chemistry
1 answer:
Ivenika [448]3 years ago
4 0

Answer:

The number of moles of Fe in 1.17*10^22 atoms Fe is 0.0194 moles

Explanation:

Step 1: Data given

Number of atoms of Fe = 1.17 * 10^22 atoms

Number of Avogadro = 6.022 *10^23

Step 2: Calculate number of moles Fe

Moles Fe = atoms Fe / number of Avogadro

Moles Fe = 1.17*10^22 atoms / 6.022*10^23 / moles

Moles Fe = 0.0194 moles

The number of moles of Fe in 1.17*10^22 atoms Fe is 0.0194 moles

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WHICH SIGN CAN SAY THAT A PHYSICAL CHANGE HAS TAKEN PLACE
Pie

Answer:

4. all of the above

Explanation:

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7 0
3 years ago
Molecules that are optically active due to the tetrahedral arrangement of bonds around the carbon atom are often referred to as
morpeh [17]
<span>Answer:
             Molecules that are optically active due to the tetrahedral arrangement of bonds around the carbon atom are often referred to as <u>Chiral Molecules</u>.

Explanation:
                   Chiral molecules have stereogenic centers. When plane polarized light is fall on these compounds they rotate the light either in clockwise or anti clockwise direction. The mirror images of chiral moleculecules are non-superimposable.  Below few examples for molecules containing chiral centers are given.</span>

6 0
3 years ago
The sun supplies about 1.0 kilowatt of energy for each square meter of surface area (1.0 kW/m^2 where a watt = 1 kJ/s) Plants pr
kaheart [24]

Answer:

0.092 %

Explanation:

The equation of the reaction can be computed as :

12CO_2_{(g)} + 11H_2O_{(l)} \to C_{12}H_{22}O_{11} + 12O_{2_(g)}

\Delta H = 5645 \ kJ

recall that; the number of moles = \dfrac{mass}{molar \ mass}

By applying the method of enthalpy of combustion for sucrose at the same time changing the time from hours to seconds, we can determine the total energy output.

i.e

=\dfrac{0.20g \ of \ sucrose }{m^2 \ 3600 \ s}\times \dfrac{1 \ mol}{342.34 \ g}\times 5.645 kJ/mol

= 9.16 \times 10^{-4} \ kJ/m^2 s

Given that the sun supplies about 1.0 kilowatt, to KJ/m² s, we have:

1.0 \dfrac{kW}{m^2 }= 1.0 \dfrac{kJ}{m^2 s}

Finally, the percentage of sunlight used to produce sucrose :

= \dfrac{9.16 \times 10^{-4} \ kJ/m^2 \ s}{1.0 \ kJ/m^2 . s} \times 100\%

= 0.092 %

6 0
3 years ago
The gas in an aerosol container is at a pressure of 3.50 atm at 24.0C. The caution on the container warns against storing it at
AVprozaik [17]

Answer:

4.34atm

Explanation:

The following data were obtained from the question:

P1 = 3.50 atm

T1 = 24°C = 24 +273 = 297K

T2 = 95°C = 368K

P2 =?

Using P1 /T1 = P2 /T2, we can obtain the new pressure as follows:

P1 /T1 = P2 /T2

3.5 / 297 = P2 / 368

Cross multiply to express in linear form:

297 x P2 = 3.5 x 368

Divide both side by the 297

P2 = (3.5 x 368) /297

P2 = 4.34atm

Therefore, the gas pressure in the container at 95°C will be 4.34atm

8 0
4 years ago
Which of the following would be the best soil for gardening?
Evgen [1.6K]

Answer:

C

Explanation:

Silt is very benifical for plant growth. So the one with the most silt would be the best for gardening soil.

5 0
3 years ago
Read 2 more answers
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