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Anika [276]
3 years ago
15

What is relative dating? A. the process of determining the order of events in geologic time B.process of determining a specific

date of an object
Chemistry
1 answer:
Contact [7]3 years ago
8 0

Answer:

A

Explanation:

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A particular first-order reaction has a rate constant of 1.35 × 102 s-1 at 25.0°C. What is the magnitude of k at 95.0°C if Ea =
never [62]

Answer:

k ≈ 9,56x10³ s⁻¹

Explanation:

It is possible to solve this question using Arrhenius formula:

ln\frac{k2}{k1} = \frac{-Ea}{R} (\frac{1}{T2} -\frac{1}{T1} )

Where:

k1: 1,35x10² s⁻¹

T1: 25,0°C + 273,15 = 298,15K

Ea = 55,5 kJ/mol

R = 8,314472x10⁻³ kJ/molK

k2 : ???

T2: 95,0°C+ 273,15K = 368,15K

Solving:

ln\frac{k2}{k1} = 4,257

\frac{k2}{k1} = 70,593

{k2} = 9,53x10^3 s^{-1}

<em>k ≈ 9,56x10³ s⁻¹</em>

I hope it helps!

5 0
2 years ago
What is the density of an object with 525 grams and a volume of 15cm3?
Hunter-Best [27]

Answer: 35 g/cm

Explanation:

Density equals mass over volume. 525 divided by 15 is 35

7 0
3 years ago
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What is the name of a solution whose concentration of solute is equal to the maximum concentration that is predicted from the so
Nat2105 [25]
Usually you would call this a saturated solution. I hope this helps.
7 0
3 years ago
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How is the electron cloud model different from Bohr's atomic model?
Cerrena [4.2K]
In the electron cloud model, the atoms are in unpredicted places. But in the Bohr model, atoms are in "rows"
7 0
3 years ago
What’s a new discovery that makes it easier to use biomass as an energy source?
stellarik [79]

Answer:

Biomass to an Energy source

Explanation:

Researchers have developed a new catalyst that directly converts cellulose, the most common form of biomass, into ethylene glycol, an important intermediate product for chemical industry. Alternatives to fossil fuels and natural gas as carbon sources and fuel are in demand.

6 0
2 years ago
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