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3 years ago

किसी भी व्यक्ति के पतन का क्या कारण होत है

Chemistry

1 answer:

LUCKY_DIMON [66]3 years ago

6 0

Answer:

Failure that results in a loss of position or reputation.

स्थिति या प्रतिष्ठा की हानि के परिणामस्वरूप विफलता

Explanation:

Hope this helped!

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Although _________________ are clearly dangerous psychoactive chemicals-drugs-semantic fiction portrays them otherwise.

LekaFEV [45]

The answers the best fit the blank provided above are the terms NICOTINE and ALCOHOL. This is related to the discussion above Drug use and abuse. Both of these results in clearly dangerous psychoactive chemicals. Hope this answers your question. Have a great day!

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3 years ago

The reactants of two chemical equations are listed.

hjlf

The correct answer is b

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2 years ago

You start out with 800 moles of a radioactive substance. After 24 hours, 100 moles remain. What is the half-life of the substanc

Nookie1986 [14]

The half life of the substance is 8 hours , Option D is the correct answer.

What is Half Life ?

Half-life is the time required by an unstable element to reduce to half of its initial value.

The term is commonly used in nuclear physics.

The formula is

$\rm N(t) = \; N_{0} \;(\dfrac{1}{2} )^{\frac{t}{t_{1/2} } }$

N(t) = quantity of the substance remaining

N ₀ = initial quantity of the substance

t = time elapsed

$\rm t_{1/2}$ = half life of the substance

The data given in the question is N ₀ = 800 moles , N(t)= 100 , t= 24 hours

$\rm t_{1/2} =\; ?$

Substituting values in the equation

$\rm 100 = \; 800 \;(\dfrac{1}{2} )^{\frac{24}{t_{1/2} } }$

$\rm \dfrac{100}{800} = \;(\dfrac{1}{2} )^{\frac{24}{t_{1/2} } }\\\\\rm \dfrac{1}{8} = \;(\dfrac{1}{2} )^{\frac{24}{t_{1/2} } }\\\\\rm (\dfrac{1}{2})^{3} = \;(\dfrac{1}{2} )^{\frac{24}{t_{1/2} } }\\\\\rm 3=\dfrac{24}{t_{1/2} }\\\\t_{1/2}= \dfrac{24}{3}\\\\t_{1/2} = 8 hours$

Therefore half life of the substance is 8 hours , Option D is the correct answer.

To know more about Half Life

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3 0

2 years ago

Which statement compares the masses of two subatomic particles?

Nataly [62]

<span>The mass of a proton is greater than the mass of an electron.</span>

6 0

3 years ago

Please solve 13<br> Please

Ymorist [56]

Answer:

1.126 M

Explanation:

From the question given, we obtained the following:

Mass of LiBr = 98g

Volume = 1 L

Molarity of LiBr =?

Next, we'll determine the number of mole of LiBr. This is illustrated below:

Molar Mass of LiBr = 7 + 80 = 87g/mol

Mass of LiBr = 98g

Number of mole = Mass/Molar Mass

Number of mole of LiBr = 98/87

Number of mole of LiBr = 1.126 mole

Now, we can calculate the molarity of LiBr. This is illustrated below:

Molarity is defined as mole per unit litre of the solution. Mathematically, it is represented as:

Molarity = mole /Volume

Mole of LiBr = 1.126 mole

Volume = 1 L

Molarity of LiBr =?

Molarity of LiBr = 1.126 mole /1 L

Molarity of LiBr = 1.126 M

7 0

3 years ago

किसी भी व्यक्ति के पतन का क्या कारण होत है​

किसी भी व्यक्ति के पतन का क्या कारण होत है