2 years ago

Symbols used in equations, together with the explanations of the symbols, are shown below. which set is correct?

Chemistry

2 answers:

vaieri [72.5K]2 years ago

3 0

Number 4 : solid product

o-na [289]2 years ago

3 0

These appear to be symbols indicating the state of the substances in a chemical equation. In that case, (g) would indicate a gaseous substance, (l) a liquid substance, (aq) a substance dissolved in water, and (s) a solid.

Thus, 3 and 4 are the correct pairs. 1 and 2 confuse the state symbols with unit symbols, and unit symbols are usually not written in chemical equations.

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3 years ago

Read 2 more answers

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

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R = 8,314472x10⁻³ kJ/molK

k2 : ???

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Solving:

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I hope it helps!

5 0

3 years ago

I NEED HELP ASAP!!<br> I DOMT KNOW HOW TO DO THIS

KatRina [158]

What part of it are you confused about

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3 years ago

A given mass of oxygen occupies 500 ml when the

matrenka [14]

Ok we can use boyle’s law (stating that P is proportional to V) to make the equation (P1V1) =(P2V2).
once we’ve done this, we can plug in the numbers:
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3 years ago