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slava [35]
3 years ago
8

Write 6.3 x 10^2 in standard form.

Chemistry
1 answer:
andre [41]3 years ago
3 0
In standard form I believe it would be 630
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What is the maximum number of electrons in oxygen Adam can hold in its outer energy level
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Do you mean atom :).
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3 years ago
An atom or ion has 41 neutrons, 36 protons, and 36 electrons. Identify the clement symbol, and determine the mass
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The atom is krypton and its symbol is Kr.

the mass number is 41 + 36 = 77

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Acetylene (C2H2), an important fuel in welding, is produced in the laboratory when calcium carbide (CaC2) reacts with water: CaC
Anastaziya [24]

Answer:

There are 1.287 grams of acetylene collected

Explanation:

Total gas pressure = 909 mmHg

Vapor pressure of water = 20.7 mmHg

Pressure of acetylene = 909 mmHg - 20.7 mmHg = 888.3 mmHg

1mmHg = 1 torr

22 ° C + 273.15 = 295.15 Kelvin

Ideal gas law ⇒ pV = nRT

⇒ with p = pressure of the gas in atm

⇒ with V = volume of the gas in L

⇒ with n = amount of substance of gas ( in moles)

⇒ with R = gas constant, equal to the product of the Boltzmann constant and the Avogadro constant (62.36 L * Torr *K^−1 *mol^−1)

⇒ with T = absolute temperature of the gas (in Kelvin)

888.3 torr * 1.024 L = n * 62.36 L * Torr *K^−1 *mol^−1 * 295.15 K

n = 0.04942 moles of C2H2

Mass of C2H2 = 0.04942 moles x 26.04 g/mole = 1.287 g

There are 1.287 grams of acetylene collected

6 0
3 years ago
Heat is which of the following???
Sergeu [11.5K]
A measure of thermal energy transferred between two different bodies at different temperatures would be the correct answer. So, the third option.
5 0
3 years ago
If you were to travel from the surface to the center of Earth, the temperature would
nataly862011 [7]

Answer:

increase dramatically(a lot).

Explanation:

The core of the earth is way way way hotter than the surface.

5 0
3 years ago
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