3 years ago

How many minutes are in 3.5 years

Chemistry

1 answer:

-Dominant- [34]3 years ago

7 0

Answer: 1,839,600 minutes.

Explanation: 3.5 years to minutes has been calculated by multiplying 3.5 years by 525,600

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Who described atoms as small spheres that could not be divided into anything smaller?

gtnhenbr [62]

John Dalton

"matter cannot be created nor destroyed or divided into smaller particles"

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2 years ago

A first-order reaction (A → B) has a half-life of 25 minutes. If the initial concentration of A is 0.900 M, what is the concentr

Oksanka [162]

Answer:

0.6749 M is the concentration of B after 50 minutes.

Explanation:

A → B

Half life of the reaction = $t_{1/2}=25 minutes$

Rate constant of the reaction = k

For first order reaction, half life and half life are related by:

$k=\frac{0.693}{t_{1/2}}$

$k=\frac{0.693}{25 min}=0.02772 min^{-1}$

Initial concentration of A = $[A]_o=0.900 M$

Final concentration of A after 50 minutes = $[A]=?$

t = 50 minute

$[A]=[A]_o\times e^{-kt}$

$[A]=0.900 M\times e^{-0.02772 min^{-1}\times 50 minutes}$

[A] = 0.2251 M

The concentration of A after 50 minutes = 0.2251 M

The concentration of B after 50 minutes = 0.900 M - 0.2251 M = 0.6749 M

0.6749 M is the concentration of B after 50 minutes.

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2 years ago

What happened to the sound as vibration of an object increase in strength

svlad2 [7]

Answer:

A.The sound becomes louder.

And

C.The sound waves get further.

Explanation:

Louder the sound it will travel long.

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2 years ago

Different "substances" are forms of matter (having volume and taking up space) with different _______________ from each other. a

ExtremeBDS [4]

Answer:

properties

Explanation:

The properties of matter are the various ways in which matter behaves under certain circumstances.

Various substances have different volumes and shapes. These differences account for the various properties of matter.

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3 years ago

Plants uses radiant energy from the sun to turn ___ and ___

siniylev [52]

Answer:

chemical energy in the form of glucose/sugar

Explanation:

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3 years ago