2 years ago

What is the name of the geologic process that formed the Grand Canyon?

1 answer:

3 0

Extensive carving of the plateaus allows for the detailed study of the Earth's movements. Processes of stream erosion and vulcanism are also easily seen and studied. Vishnu schist as displayed on the Trail of Time. The Colorado River has carved the Grand Canyon into four plateaus of the Colorado Plateau

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What monatomic ions do selenium (z = 34) and phosphorus (z = 15) form? (type your answer using the format [cu]+ for cu+ and [cu]

Alex787 [66]

The answer:
for the monoatomic selenium ions
 -the ion charge of selenium is 2-, so the answer is [Se]2+
as for the monoatomic phosphorus ions
-the ion charge of phosphorus is 3-, so the answer is [P]3-

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2 years ago

Is the gravity a black hole strong enough to keep light from escaping True or False

puteri [66]

Answer:

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(True)

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2 years ago

A solution in a dish contains 4.0 grams of salt dissolved in 100 grams of water. If 50 grams of the water evaporates, this is ev

MaRussiya [10]

D. A mixture

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3 years ago

Whats heptane's formula?

Dovator [93]

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5 0

3 years ago

A sample of ammonia gas at 75°c and 445 mm hg has a volume of 16.0 l. what volume will it occupy if the pressure rises to 1225 m

ioda

In this kind of exercises, you should use the "ideal gas" rules: PV = nRT
P should be in Pascal:
445mmHg = 59328Pa
1225mmHg = 163319Pa

V should be in cubic meter:
16L = 0.016 m3

R = $\frac{PV}{nT}$ = constant
$\frac{P1 V1}{n T}$ = $\frac{P2 V2}{n T}$
==> P1 * V1 = P2 * V2
V2 = $\frac{P1 V1}{P2}$ = $\frac{445 0.016}{1225}$
V2 = 0.00581 m3 = 5.81 L

7 0

3 years ago