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blondinia [14]
3 years ago
12

An element occurs naturally as a gas. It is also characterized by a very

Chemistry
1 answer:
Delvig [45]3 years ago
8 0
I believe it would be c

Please brainiest
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Round off the measurement to three significant figures 12.17º C
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If you had excess chlorine, how many moles of of aluminum chloride could be produced from 19.0 g of aluminum?
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The chemical reaction would be written as follows:

2Al + 3Cl2 = 2AlCl3

We are given the amount of aluminum to be used in the reaction. This will be the starting point of the calculations. We do as follows:

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HELP ME PLS I NEED HELP I HAVE 5MINS
Leviafan [203]

Answer:

K

Explanation:

Since the blood moves from the body to the right atrium to the right ventricle

3 0
2 years ago
600 s after initiation of a first order reaction 48.5% of the initial reactant concentration remains present. What is the rate c
Ludmilka [50]

Answer:

k=1.20x10^{-3} s^{-1}

Explanation:

For a first order reaction the rate law is:

v=\frac{-d[A]}{[A]}=k[A]

Integranting both sides of the equation we get:

\int\limits^a_b {\frac{d[A]}{[A]}} \, dx =-k\int\limits^t_0 {} \, dt

where "a" stands for [A] (molar concentration of a given reagent) and "b" is {A]0 (initial molar concentration of a given reagent), "t" is the time in seconds.

From that integral we get the integrated rate law:

ln\frac{[A]}{[A]_{0} } =-kt

[A]=[A]_{0}e^{-kt}

ln[A]=ln[A]_{0} -kt

k=\frac{ln[A]_{0}-ln[A]}{t}

therefore k is

k=\frac{ln1-ln0,485}{600}=1,20x10^{-3}

8 0
3 years ago
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