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3 years ago

What is (part of life)and(art of life)?someone will answer me

Chemistry

1 answer:

irinina [24]3 years ago

7 0

Explanation:

Part of life is the role we certainly play during our role in life.Like a quote of shakespeare,we have our roles in earth to perform or we are like a chess whom we don't want to waste a move.

Art of life signifies that our life is wonderful with mysteries and hypotenic beauty and wonders and with different moments in a journey.

Keep smiling and hope u r satisfied with my answer.Have a great day :)

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40 POINTS COLLEGE CHEMISTRY

alexdok [17]

Answer:

C2= 0.16M

Explanation:

C1= 2M, V1= 20ml, C2= ?, V2= 250ml

Applying dilution formula

C1V1= C2V2

2×20 =C2×250

C2= 0.16M

5 0

3 years ago

A weather balloon is inflated to a volume of 27.6 L at a pressure of 755 mmHg and a temperature of 29.9 ∘C. The balloon rises in

pantera1 [17]

Answer: The volume of the balloon at this altitude is 46.3 L

Explanation:

Combined gas law is the combination of Boyle's law, Charles's law and Gay-Lussac's law

The combined gas equation is,

$\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}$

where,

$P_1$ = initial pressure of gas = 755 mm Hg

$P_2$ = final pressure of gas (at STP) = 385 mm Hg

$V_1$ = initial volume of gas = 27.6 L

$V_2$ = final volume of gas = ?

$T_1$ = initial temperature of gas = $29.9^0C=(29.9+273)K=302.9K$

$T_2$ = final temperature of gas = $-14.1^0C=((-14.1)+273)K=258.9K$

Putting all the values we get:

$\frac{755\times 27.6}{302.9}=\frac{385\times V_2}{258.9}$

$V_2=46.3L$

Thus the volume of the balloon at this altitude is 46.3 L

5 0

3 years ago

How much is the chemotherapy in FeS2?explain

SVETLANKA909090 [29]

Answer:

Valence of iron in FeS2

Let the valency of iron be x

x+2(oxidation number of Sulphur)=0 as their is no charge on FeS2

As sulphur belongs to Group VI (chalcogens) so the valency/oxidation number of Sulphur is -2

x+2(-2)=0

x-4=0

x=4

So the valency/oxidation number of iron in FeS2 is +4

Explanation:

Hope it will help you monkey ^_^ it's crab

6 0

4 years ago

Read 2 more answers

PLEASE HELP!! I GIVE BRAINLIEST

marshall27 [118]

Answer:

1)C 2)B 3)D

Explanation:

7 0

3 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

What is (part of life)and(art of life)?someone will answer me​

What is (part of life)and(art of life)?someone will answer me