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Otrada [13]
2 years ago
12

Daniel Ost’s acclaim is

Chemistry
1 answer:
Sholpan [36]2 years ago
3 0

Answer:

Daniel Ost is a Belgian floral artist, floral designer and garden architect. CBS News has described him as "the world's leading flower designer" while The New York Times says that "to call him a master flower designer is akin to calling Annie Leibovitz a shutterbug". His clientele includes numerous royal families, sheikhs, multinational organisations and humanitarian organisations like UNICEF.

Hope this helps!

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What volume is occupied by 0.104 mol of helium gas at a pressure of 0.91 atm and a temperature of 314 K ?
Aleksandr-060686 [28]

Answer:

The volume will be "2.95 L".

Explanation:

Given:

n = 0.104

p = 0.91 atm

T = 314 K

Now,

The Volume (V) will be:

= \frac{nRT}{P}

By putting the values, we get

= \frac{0.104\times 0.0821\times 314}{0.91}

= \frac{2.6810}{0.91}

= 2.95 \ L

7 0
2 years ago
How did Bohr solve the contradiction with physics with his model of an atom
daser333 [38]

Answer:

He used Velocity and Radius.

Explanation:

The uncertainty truths contradicts Bohr's thoughts of electrons.

4 0
3 years ago
An original sample of the radioisotope fluorine-21 had a mass of 80.0 milligrams. Only 20.0 milligrams of this original sample r
lyudmila [28]

<u>Answer:</u> The correct answer is Option 3.

<u>Explanation:</u>

All the radioisotope decay processes follow first order kinetics.

Rate law expression for first order kinetics is given by the equation:

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

where,  

k = rate constant  = ?

t = time taken for decay process = 8.32 seconds

a = initial amount of the reactant  = 80 mg

a - x = amount left after decay process  = 20 mg

Putting values in above equation, we get:

k=\frac{2.303}{8.32sec}\log\frac{80g}{20}\\\\k=0.166sec^{-1}

The equation used to calculate half life for first order kinetics:

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

where,

t_{1/2} = half life of the reaction = ?

k = 0.166sec^{-1}

Putting values in above equation, we get:

t_{1/2}=\frac{0.693}{0.166sec^{-1}}=4.16sec

Hence, the correct answer is Option 3.

5 0
2 years ago
Read 2 more answers
Examplesfor gas in liquid sssloution​
Zina [86]

Answer:

Water vapor to dew

Explanation:

Water vapor turns from a gas into a liquid, such as dew on the morning grass.

5 0
3 years ago
Read 2 more answers
which moving body has no acceleration? a.a satilite orbiting at a constant speed b.a person rnning once around a track at a cons
RoseWind [281]
The answer is D. for sure i took the test  no acceleration means no turning going straight no turns  i hope i helped
8 0
3 years ago
Read 2 more answers
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