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4 years ago

MgO(s) + H2O(l) → Mg(OH)2(aq)

Chemistry

1 answer:

Sedbober [7]4 years ago

8 0

My apologies, I don’t seem to understand the question.

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What is the pressure inside a cylinder when the volume changes from 12.49 dm3 to 47.32 dm3 with an initial pressure of 7.257 x 1

zvonat [6]

Answer:

The pressure inside becomes : 202.646 KPa

Explanation:

Given ,

The temperature inside the cylinder is constant
The number of moles of the gas inside the cylinder will also be constant because it's a closed one.

Now according Boyle's law ,

The pressure of a gas of fixed mass is inversely proportional to its volume at a constant temperature.

Thus ,

$P_1V_1=P_2V_2\\$

$P_1$ is the initial pressure $7.257*102*10^3 Pa$
$P_2$ is what we need to find
$V_1 = 12.49dm^3$ - initial volume
$V_2 = 47.32dm^3$ - final volume

∴

$7.527*102*10^3*12.49=P_2*47.32\\P_2=2.02646*10^5Pa$

The pressure inside becomes : 202.646 KPa

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3 years ago

On the Fahrenheit scale at what temperature does water boil at?

icang [17]

212 degrees Fahrenheit is the temperature at which water boils.

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4 years ago

Read 2 more answers

Consider the mechanism. step 1:step 2:overall:2a⟶bb c⟶d2a c⟶dslowfast determine the rate law for the overall reaction, where the

Ne4ueva [31]

Answer:

Rate: R = k [A]²

Explanation:

The rate law equation for a given complex chemical reaction is given as the product of molar concentrations of the reactant raised to the power their respective partial reaction orders. The sum of the partial reaction orders is equal to the overall order of reaction.

For a complex reaction, the rate law is generally determined by the slowest step, which is known as the rate-determining step.

Given reaction mechanism:

Step 1: 2 A⟶ B, slow step

Step 2: B+ C⟶ D, fast step

Overall: 2 A + C ⟶ D

In this given reaction mechanism, the step 1 is the slow step and thus the rate determining step.

Therefore, the rate law for the given mechanism is:

Rate: R = k [A]²

Here, k is the overall rate constant

Also, the overall order of the reaction = 2

Therefore, the given chemical reaction is said to be second order reaction.

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3 years ago

What body parts are involved in this injury? (e.g., limbs, muscles, tendons, tissue, bones, blood flow, etc.)

umka2103 [35]

Answer:

An abrasion or scrape. Spray or pour hydrogen peroxide on the womb. Then apply a patch wrapped to it with an adhesive tape.

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3 years ago

What is the mass (in grams) of 1.34 moles of CaCl2?

zloy xaker [14]

110.984 grams and this is for the 20 characteristics u have to use

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4 years ago