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3 years ago

Which waves are blocked by the atmosphere? A. gamma rays B. visible light C. radio waves D. infrared waves

Chemistry

1 answer:

Furkat [3]3 years ago

3 0

Answer: look at the explanation and try to work it

Explanation: in contrast, our atmosphere blocks most ultraviolet light (UV) and all X-rays and gamma-rays from reaching the surface of Earth. Because of this, astronomers can only study these kinds of light using detectors mounted on weather balloons, in rockets, or in Earth-orbiting satellites.

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Help me with this question <br>Define a unit? write it's type

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Answer:

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3 years ago

How many types of van der Waals forces exist?

scoundrel [369]

We need to know different types of van der Waal's forces.

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3 years ago

Samarium-146 has a half-life of 103.5 million years. After 1.035 billion years, how much samarium-146 will remain from a 205-g s

BaLLatris [955]

Answer : The correct option is, 0.200 g

Solution :

As we know that the radioactive decays follow first order kinetics.

First we have to calculate the rate constant of a samarium-146.

Formula used :

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

Putting value of $t_{1/2}$ in this formula, we get the rate constant.

$103.5\times 10^6=\frac{0.693}{k}$

$k=6.6\times 10^{-9}year^{-1}$

Now we have to calculate the original amount of samarium-146.

The expression for rate law for first order kinetics is given by :

$k=\frac{2.303}{t}\log\frac{a}{a-x}$

where,

k = rate constant = $6.6\times 10^{-9}year^{-1}$

t = time taken for decay process = $1.035\times 10^{9}years$

a = initial amount of the samarium-146 = 205 g

a - x = amount left after decay process = ?

Putting values in above equation, we get the value of initial amount of samarium-146.

$6.6\times 10^{-9}=\frac{2.303}{1.035\times 10^{9}}\log\frac{205}{a-x}$

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Therefore, the amount left of the samarium-146 is, 0.200 g

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4 years ago

Read 2 more answers

What are the three important functions of the atmosphere ?

Shkiper50 [21]

The atmosphere protects life on earth by shielding it from incoming ultraviolet (UV) radiation, keeping the planet warm through insulation, and preventing extremes between day and night temperatures.

<h3>What is the atmosphere?</h3>

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2. The atmosphere keeps the planet warm through the insulation effect.

3. The atmosphere maintains extremes between day and night temperatures.

Learn more about the atmosphere here:

brainly.com/question/26767532

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2 years ago

A chemical reaction takes place in a closed system. The mass of the reactants before the reaction was 35 grams. What must the ma

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The chemical rehearsal is founded by the national association of university or education defines as mathematical.

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3 years ago

Which waves are blocked by the atmosphere? A. gamma rays B. visible light C. radio waves D. infrared waves​

Which waves are blocked by the atmosphere? A. gamma rays B. visible light C. radio waves D. infrared waves