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Masja [62]
2 years ago
7

What is the relationship between radius and diameter

Chemistry
2 answers:
inessss [21]2 years ago
7 0

The radius of a circle is equal to half the diameter.

Mrrafil [7]2 years ago
6 0

Answer:

the radius is half the diameter

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Rank the following measurements in order from least to greatest
Harman [31]
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1.A
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4 0
3 years ago
Suppose the half-life is 9.0 s for a first order reaction and the reactant concentration is 0.0741 M 50.7 s after the reaction s
bazaltina [42]

<u>Answer:</u> The time taken by the reaction is 84.5 seconds

<u>Explanation:</u>

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

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

where,

t_{1/2} = half-life of the reaction = 9.0 s

k = rate constant = ?

Putting values in above equation, we get:

k=\frac{0.693}{9}=0.077s^{-1}

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

k=\frac{2.303}{t}\log\frac{[A_o]}{[A]}     ......(1)

where,

k = rate constant  = 0.077s^{-1}

t = time taken for decay process = 50.7 sec

[A_o] = initial amount of the reactant = ?

[A] = amount left after decay process =  0.0741 M

Putting values in equation 1, we get:

0.077=\frac{2.303}{50.7}\log\frac{[A_o]}{0.0741}

[A_o]=3.67M

Now, calculating the time taken by using equation 1:

[A]=0.0055M

k=0.077s^{-1}

[A_o]=3.67M

Putting values in equation 1, we get:

0.077=\frac{2.303}{t}\log\frac{3.67}{0.0055}\\\\t=84.5s

Hence, the time taken by the reaction is 84.5 seconds

6 0
3 years ago
Find the moles in 0.0023 of Co, at STP:
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What is does that mean 0.0023 cooooo
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The standard unit for concentration, Molarity (M) can also be written as?
emmasim [6.3K]

mole is the standardized form of molarity

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2 years ago
How do we know that air we breathe is matter?
Viefleur [7K]
Because all matter has density and since air has density then air is matter and plus EVERYTHING is made of matter
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3 years ago
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