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Serjik [45]
3 years ago
9

What is the first step of scientific method A.Hypothesis

Chemistry
1 answer:
ivann1987 [24]3 years ago
5 0

Answer:

B

Explanation:

Question. You need to ask questions before you can set up to perform an experiment.

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List three properties of metals that nonmetals typically do not have
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What type of reaction is shown below c10H8+12O2 10co2+4H2O
MakcuM [25]

Answer:

Explanation:

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3 years ago
When you mix copper sulphate solution and steel wool, what is the chemical property that can be observed.
bazaltina [42]

Answer:

Explanation:

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6 0
3 years ago
10. At 573K, NO2(g) decomposes forming NO and O2. The decomposition reaction is second order in NO2 with a rate constant of 1.1
leva [86]

Answer:

48.67 seconds

Explanation:

From;

1/[A] = kt + 1/[A]o

[A] = concentration at time t

t= time taken

k= rate constant

[A]o = initial concentration

Since [A] =[A]o - 0.75[A]o

[A] = 0.056 M - 0.042 M

[A] = 0.014 M

1/0.014 = (1.1t) + 1/0.056

71.4 - 17.86 = 1.1t

53.54 = 1.1t

t= 53.54/1.1

t= 48.67 seconds

Hence,it takes 48.67 seconds to decompose.

6 0
3 years ago
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