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2 years ago

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A container of gas is heated from 250 k to 303k. What is the new pressure if the initial pressure is 880kpa? (Assume constant vo

lume)

1 answer:

Anna [14]2 years ago

8 0

So this is p1 over t1 = p2 over t2. So you do 880/250=x/303 and then cross multiply and divide

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The reaction 2a + b --> c + d has an activation energy of 80.0 kj/mol. at 320°c, the rate constant k = 1.80 x 10-2 l mol-1 s-

Naddik [55]

To determine the k for the second condition, we use the Arrhenius equation which relates the rates of reaction at different temperatures. We do as follows:

ln k1/k2 = E / R (1/T2 - 1/T1) where E is the activation energy and R universal gas constant.

ln 1.80x10^-2 / k2 = 80000 / 8.314 ( 1/723.15 - 1/593.15)

k2 = 0.3325 L / mol-s

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3 years ago

One atom of silicon can properly be combined in a compound with

Over [174]

your answer is c. two atoms of oxygen.

7 0

3 years ago

Read 2 more answers

What are the missing coefficients for the skeleton equation below?

Vika [28.1K]

Answer:

C. Double Replacement

Explanation:

A. Wrong because SR uses a compound and element. This equation is a compound and compound.

B. Wrong because it does not have O2 in the formula. All combustion reactions must have O2.

C. Correct because it is a compound reacting with a compound.

D. Wrong because the reactants did not form a single product. ex. (x + y > xy)

E. Wrong because the equation did not start with a single compound and break down. ex. (xy > x + y)

3 0

2 years ago

What is the difference between the hybridization of carbon atomsâ€™ valence orbitals in saturated and unsaturated hydrocarbons?

ANEK [815]

Answer:

Type of hybridisation

Explanation:

For example , saturated hydrocarbons have sp3 hybridisation while unsaturated hydrocarbons have either sp2 or sp hybridisation.

Example: Ethane( C2H6) has sp3 hybridisation and ethene(C2H4) has sp2 hybridisation and Ethyne(C2H2) has sp hybridization.

7 0

2 years ago

Many carboxylic acids are much better known by their common names than by their systematic names. 2-Hydroxypropanoic acid (bette

sdas [7]

Answer:

CH₃ - CH - COOH

|

OH

The developed structural formula is also attached.

Explanation:

The IUPAC name, <em>2-hydroxypropanoic acid</em>, lets you predict the structural formula for <em>lactic acid</em>.

<em>2-hydroxy</em> means that there is a OH functional group attached to the second carbon atom of the chain.

<em>Propan</em> prefix means that the molecule has 3 carbon atoms.

<em>oic</em> suffix means that it is a carboxylic acid, this is it contains the COOH functional group.

Hence, in conclusion the structural form of lactic acid is:

C³H₃ - C²H - C¹OOH

|

OH

I used the superscripts just to show the number of the carbon atom in the chain.

The formal structural formula does not contain such superscripts it is just:

CH₃ - CH - COOH

|

OH

A more developed structural formula will show the distribution of the atoms in the space. I have also attached a picture with the developes structural formula.

3 0

3 years ago