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3 years ago

which city would most likely be the epicenter of an earthquake : san francisco, california, st. paul, minnesota,

Chemistry

1 answer:

jeka57 [31]3 years ago

5 0

It would be San Francisco because it is directly on the epicenter

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N2O5 decomposes to form NO2 and O2 with first-order kinetics. The initial concentration of N2O5 is 3.0 M and the reaction runs f

kow [346]

Answer : The final concentration of $N_2O_5$ is, 2.9 M

Explanation :

Expression for rate law for first order kinetics is given by:

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

where,

k = rate constant = $5.89\times 10^{-3}\text{ min}^{-1}$

t = time passed by the sample = 3.5 min

a = initial concentration of the reactant = 3.0 M

a - x = concentration left after decay process = ?

Now put all the given values in above equation, we get

$3.5=\frac{2.303}{5.89\times 10^{-3}}\log\frac{3.0}{a-x}$

$a-x=2.9M$

Thus, the final concentration of $N_2O_5$ is, 2.9 M

3 0

3 years ago

A screw decreases the amount of work done. True False

victus00 [196]

Answer:

tru

Explanation:

4 0

3 years ago

Read 2 more answers

1. Calculate the percent oxygen in H2SO4.

Mashutka [201]

I believe the answer is 65.254%

6 0

3 years ago

The Goodyear blimp contains 5.7 x 10^6 L of helium at 25 degrees Celsius and 1 atm. What is the mass in grams of the helium insi

anygoal [31]

Answer:

1.72x10⁻⁵ g

Explanation:

To solve this problem we use the PV=nRT equation, where:

P = 1 atm

V = 5.7x10⁶ L

n = ?

R = 0.082 atm·L·mol⁻¹·K⁻¹

T = 25 °C ⇒ (25+273.16) = 298.16 K

And we solve for n:

1 atm * 5.7x10⁶ L = n * 0.082 atm·L·mol⁻¹·K⁻¹ * 298.16 K

n = 4.29x10⁻⁶ mol

Finally we convert moles of helium to grams, using its molar mass:

4.29x10⁻⁶ mol * 4 g/mol = 1.72x10⁻⁵ g

8 0

3 years ago

Solid iron(III) oxide (Fe,O3) reacts with hydrogen gas (H) to form iron and

Kisachek [45]

8. 4 grams of water will be produced.

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3 years ago