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Setler [38]
3 years ago
5

Someone help me out with this brain pop ⚠️

Chemistry
1 answer:
erik [133]3 years ago
6 0
The answer is b because if you’re fan is blowing and you spend it the opposite way, the air will be cooler
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g The decomposition reaction of A to B is a first-order reaction with a half-life of 2.42×103 seconds: A → 2B If the initial con
Tanzania [10]

Answer:

In 23.49 minutes the concentration of A to be 66.8% of the initial concentration.

Explanation:

The equation used to calculate the constant for first order kinetics:

t_{1/2}=\frac{0.693}{k}} .....(1)

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

t=\frac{2.303}{k}\log\frac{[A_o]}{[A]} ......(2)

where,  

k = rate constant

t_{1/2} =Half life of the reaction = 2.42\times 10^3 s

t = time taken for decay process = ?

[A_o] = initial amount of the reactant = 0.163 M

[A] = amount left after time t =  66.8% of [A_o]

[A]=\frac{66.8}{100}\times 0.163 M=0.108884 M

k=\frac{0.693}{2.42\times 10^3 s}

t=\frac{2.303}{\frac{0.693}{2.42\times 10^3 s}}\log\frac{0.163 M}{0.108884 M}

t = 1,409.19 s

1 minute = 60 sec

t=\frac{1,409.19 }{60} min=23.49 min

In 23.49 minutes the concentration of A to be 66.8% of the initial concentration.

6 0
3 years ago
Why is Cl weaker base
Helen [10]
Because cl atoms are bonded with hydrogen. hydrogen bond is very strong bond
6 0
3 years ago
  A solution is made by dissolving 20 ml of acetic acid in 180ml of water. Calculate its volume concentration​
inn [45]

Answer:

water is 9/10

chemical would be 1/10

Explanation:

180/200 would be water concentration in solution

and 20/200 would be chemical solution concentration in solution (if the chemical were to be polar and mix)

8 0
3 years ago
Would Cu be oxidized by Ag+?
Fed [463]
It oxidized cu since it gains electons.
3 0
4 years ago
In general, what causes a sea breeze?
ella [17]

Answer:

The usual cause of sea breeze is the difference in specific heat capacity between land and water Land heats and cools more quickly than water. What is the cause of a sea breeze? The air over the land is warmed and rises, to a greater temperature than that over the sea.

Explanation:

Your answer is C ! <3

7 0
3 years ago
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