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larisa [96]
2 years ago
8

100 cm = 1m

Chemistry
1 answer:
shutvik [7]2 years ago
3 0

Answer:

This is a conversion factor

You might be interested in
Which elements in group is the most reactive nonmetals
klemol [59]

Answer:

flourine

Explanation:

8 0
1 year ago
What mass of copper is produced when zinc is added to a solution containing 31.9g copper ii tetraoxosulphate vi
solmaris [256]

Answer:

12.7g of Cu

Explanation:

First let us generate a balanced equation for the reaction. This is illustrated below:

Zn + CuSO4 —> ZnSO4 + Cu

Molar Mass of Cu = 63.5g/mol

Molar Mass of CuSO4 = 63.5 + 32 + (16x4) = 63.5 + 32 + 64 = 159.5g/mol

From the equation,

159.5g of CuSO4 produced 63.5g of Cu.

Therefore, 31.9g of CuSO4 will produce = (31.9 x 63.5) / 159.5 = 12.7g of Cu

4 0
3 years ago
In hypothetical element, two energy levels are separated by an energy of 282 kj/mol. what wavelength of light (in nm) is involve
scZoUnD [109]

Answer:

4.23*10^2 nm = 423 nm

Explanation:

E={\frac  {hc}{\lambda }}

h=6.62607015*10^{-34}J*s\\c=299 792 458 m / s\\h*c=1.98644568*10^{-25}J*m

282000 j/mol *1 mol/6*10^(23) = 4.7*10^(-19) J for one electron

\lambda={\frac  {hc}{E }}=\frac{1.98644568*10^{-25}J*m}{4.7*10^{-19}J} =\\\\=4.22648017*10^{-7} m = 4.22648017*10^{-7} m*\frac{10^9 nm}{1 m} =\\\\4.23*10^2 nm = 423 nm

6 0
3 years ago
A. List 3 signs that a chemical reaction occurred.
ioda
A. gas change, color change, and temperature change.

B. color change; one day you wore a ring that wasn't stainless steel in the shower, so the following morning it was rusted.
6 0
3 years ago
Do anyone know how to do question B
Over [174]

Answer:

a) IUPAC Names:

                   1) (<em>trans</em>)-but-2-ene

                   2) (<em>cis</em>)-but-2-ene

                   3) but-1-ene

b) Balance Equation:

                       C₄H₁₀O + H₃PO₄   →   C₄H₈ + H₂O + H₃PO₄

As H₃PO₄ is catalyst and remains unchanged so we can also write as,

                                    C₄H₁₀O   →   C₄H₈ + H₂O

c) Rule:

           When more than one alkene products are possible then the one thermodynamically stable is favored. Thermodynamically more substituted alkenes are stable. Furthermore, trans alkenes are more stable than cis alkenes. Hence, in our case the major product is trans alkene followed by cis. The minor alkene is the 1-butene as it is less substituted.

d) C is not Geometrical Isomer:

        For any alkene to demonstrate geometrical isomerism it is important that there must be two different geminal substituents attached to both carbon atoms. In 1-butene one carbon has same geminal substituents (i.e H atoms). Hence, it can not give geometrical isomers.

7 0
3 years ago
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