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3 years ago

11

Submit a data table you made and a atom diagram. Remember to proofread your work before submitting the work. I will give 30 poin

ts this is really important for some reason helpppp.

1 answer:

nadezda [96]3 years ago

3 0

Answer:

There's no picture, so I can't help witht his, apologies!

Explanation:

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The early hypothesis of _______ was based on observations that suggested continents were once joined together. Later, the theory

zvonat [6]

The early hypothesis of Alfred wegener was based on observations that suggested continents were once joined together. later the theory of plate tectonics explained why large pieces of earths surfaces moves around and how many of earths features form.
but i this case c. continental drift and plate tectonics

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3 years ago

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2 A certain gas of 25 g at 25°c and 0.65 atm occupies a volume of 23.52L Determine the molecule mass of the gas.

denpristay [2]

Answer:

${ \bf{PV= \frac{m}{M} RT}} \\ \\ { \tt{(0.65 \times 23.52) = \frac{25}{M} \times 0.081 \times (25 + 273)}} \\ \\ M = 39.5 \: g$

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3 years ago

Burning 1 kg of coal releases about 3 million joules of energy. If you could use all of the chemical energy to lift another kilo

Katarina [22]

I could lift 3.06 x 10⁵ m high

<h3>Further explanation </h3>

Energy is the ability to do work. Energy can change from one energy to another

Potential energy is the energy that an object has because of its position

The potential energy can be formulated:

Ep = m. g. h

E = potential energy of an object, joule

m = object mass, kg

g = gravity acceleration, m / s²

h = height of an object, m

energy of coal = 3.10⁶ J

mass = 1 kg

g = 9.8 m/s²

$\tt h=\dfrac{E}{m.g}\\\\h=\dfrac{3.10^6}{1\times 9.8}=3.06\times 10^5`m$

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3 years ago

The density of the solid phase of a substance is 0.90 g/cm3 and the density of the liquid phase is 1.0 g/cm3. A large increase i

aliina [53]

Answer:

it is c

Explanation:

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What is the representative particle of Fe?

Flauer [41]

Well knowing that a representative particle is the smallest unit that would mean an iron atom would be the answer

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