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GarryVolchara [31]
4 years ago
9

Hurry hurry answer these so I don't get grounded!

Chemistry
1 answer:
TEA [102]4 years ago
6 0
1. Tributary
2. Erosion
3. Where a river turns
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15.0 L of an ideal gas at 298 K and 3.36 atm are heated to 383 K with
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Is the new volume, 10.80L?

Explanation:

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Magnesium, strontium, and barium belong to group 2A of the periodic table.

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On the seashore pebbles that are rough and uneven become smooth and rounded explain how they become smooth and rounded
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The pebbles become smooth and even because of erosion. the waves from the sea rub against the pebbles this is erosion. x
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Do ionic compounds or covalent compounds conduct electricity
Liula [17]

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4 0
3 years ago
A certain first-order reaction a → b is 25% complete in 42 min at 25°c. What is the half-life of the reaction?.
Anika [276]

The half-life of the reaction is 101.9 min

<h3>First order reaction </h3>

When a reaction's pace and reactant concentration are inversely correlated, the process is known as a first-order reaction. To put it another way, the reaction rate doubles when the concentration does. One or two reactants can be present in a first-order reaction, as in the case of the decomposition process.

<h3>The half-life of first-order reaction:-</h3>

The amount of time it takes for the initial concentration of the reactant(s) to decrease by half is known as the half-life of a chemical reaction (abbreviated as "t1/2").

<h3 /><h3>Calculation:-</h3>

a→b

25% reacted means 75% remains

t=42 min

Rate constant

k=(2.303/t)(log a/a-x)

k=(2.303/42)(log 100/100-25 )

k=(0.054) (log 100/75)

k=(0.054)(0.1249)

k=0.0068 per min

half life

t1/2=(0.693/k)

     =(0.693/0.0068)

     =101.9 min

Learn more about first order reaction here :-

brainly.com/question/27754430

#SPJ4

5 0
2 years ago
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