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2 years ago

Please answer this question about chemistry ASAP I NEED HELP

Chemistry

1 answer:

vova2212 [387]2 years ago

3 0

Answer:ohhhhhhh I’m confused on this

Explanation:ahhh

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The isomerization of methylisonitrile to acetonitrile is first order in CH3NC. CH3NC(g) → CH3CN(g) The half life of the reaction

sasho [114]

Answer: The rate constant for the given reaction is $4.33\times 10^{-6}s^{-1}$

Explanation:

For the given chemical equation:

$CH_3NC(g)\rightarrow CH_3CN(g)$

We are given that the above equation is undergoing first order kinetics.

The equation used to calculate rate constant from given half life for first order kinetics:

$t_{1/2}=\frac{0.693}{k}$

The rate constant is independent of the initial concentration for first order kinetics.

We are given:

$t_{1/2}$ = half life of the reaction = $1.60\times 10^5s$

Putting values in above equation, we get:

$k=\frac{0.693}{1.60\times 10^5s}=4.33\times 10^{-6}s^{-1}$

Hence, the rate constant for the given reaction is $4.33\times 10^{-6}s^{-1}$

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3 years ago

Liquids are not easily compressible but flow easily. O True O False

Stolb23 [73]

The answer should be True :)

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3 years ago

11. What is another name for the transition metals? Group B elements noble gases Group A elements Group C elements

finlep [7]

Answer:

Group B elements

Explanation:

Group B metals are referred to as transition metals. They are located in the middle of the periodic table between Group IIA and Group IIIA. They provide transition between the "base formers" on the left and "acid formers" on the right.

3 0

3 years ago

Please help ASAP Will give brainliest

Leni [432]

Answer: 457.8

Explanation:

345.8*225/703.55

8 0

2 years ago

Write the isotopic symbol for the following (show your work) a) An isotope of iodine whose atoms have 78 neutrons b) An isotope

morpeh [17]

Answer:

For a: The isotopic representation of iodine is $_{53}^{131}\textrm{I}$

For b: The isotopic representation of cesium is $_{55}^{137}\textrm{Cs}$

For c: The isotopic representation of strontium is $_{38}^{52}\textrm{Sr}$

Explanation:

The isotopic representation of an atom is: $_Z^A\textrm{X}$

where,

Z = Atomic number of the atom

A = Mass number of the atom

X = Symbol of the atom

For a:

We are given:

Number of neutrons = 78

Atomic number of iodine = 53 = Number of protons

Mass number = 53 + 78 = 131

Thus, the isotopic representation of iodine is $_{53}^{131}\textrm{I}$

For b:

We are given:

Number of neutrons = 82

Atomic number of cesium = 55 = Number of protons

Mass number = 55 + 82 = 137

Thus, the isotopic representation of cesium is $_{55}^{137}\textrm{Cs}$

For c:

We are given:

Number of neutrons = 52

Atomic number of strontium = 38 = Number of protons

Mass number = 38 + 52 = 90

Thus, the isotopic representation of strontium is $_{38}^{52}\textrm{Sr}$

3 0

3 years ago