1.) Convert 202.1 km to millimeters

Chemistry

1 answer:

Dmitry_Shevchenko [17]3 years ago

3 0

Answer: 2.021 x 10^8 mm or 202,100,000

Explanation: Going from km to mm, you move the decimal place 6 times to the right.

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Select all of the statements that correctly describe DNA structure:

GalinKa [24]

Answer:

Hydrogen bonds will hold two DNA strands together.
The sugars and phosphate groups are located on the exterior of the helix.
Base pairing will always be between a purine base and a pyrimidine base.

I hope this helps you

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3 0

2 years ago

When the pressure that a gas exerts on a sealed container changes from 22.5 psi to psi the temperature changes from 110 c to 65.

ad-work [718]

Gay- Lussacs law states that the pressure of a gas is directly proportional to temperature for a fixed amount of gas at constant volume.
therefore P/T = k
where P - pressure , T - temperature and k - constant
$\frac{P1}{T1} = \frac{P2}{T2}
$
parameters for the first instance are on the left side and parameters for the second instance are on the right side of the equation
T1 - temperature in kelvin - 110 °C + 273 = 383 K
T2 - 65.0 °C + 273 = 338 K
substituting these values in the equation

$\frac{22.5 psi}{383 K} = \frac{P}{338K}$
P = 19.9 psi
new pressure is 19.9 psi

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3 years ago

The standard reduction potentials for the Ag+|Ag(s) and Zn2+| Zn(s) half-cell reactions are +0.799 V and -0.762 V, respectively.

mihalych1998 [28]

Answer: The potential of the given cell is 1.551 V

Explanation:

The given chemical cell follows:

$Zn(s)|Zn^{2+}(0.125M)||Ag^{+}(0.240M)|Ag(s)$