Abdid is an astronomer who has been observing objects that orbit the Sun in the asteroid belt. He finds a previously undiscovered round, rocky object that is not similar in shape to the rest of the asteroids. What has Abdid most likely found?

Answers

Answer 1

Answer:

Answer:

Abdid has most likely found a new dwarf planet.

Explanation:

Dwarf planets are too small to be considered planets, but are also two big to be considered something else. A dwarf planet has to have sufficient mass so that the self-gravity is strong enough to create its round shape. Other qualifications of a dwarf planet is that it has not cleared the neighborhood around its orbit and it cannot be a satellite. Based on the location, size, and shape of the object Abdid has discovered, it is likely he discovered a new dwarf planet in the asterioid belt. One of the most famous is Ceres.

Answer 2

Answer: since it is round and it is the asteroid belt it is most likely that he found a dwarf planet

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As the activation energy of a reaction decreases, the number of molecules with at least this much energy ______________.

Answers

Answer:

Increasing

Explanation:

Calculate the mass of 139 cm^3 Argon at STP

Answers

Volume in liters:

139 cm³ / 1000 = 0.139 L

molar mass Argon = 39.95 g/mol

1 mole -------- 22.4 L ( at STP )
? mole ------- 0.139 L

moles of argon :

0.139 * 1 / 22.4 = 0.00620 moles

Mass of argon :

0.00620 * 39.95 = 0.24769 g

hope this helps!

One of the first steps toward currently accepted theories of our Solar System's formation and evolution was the general acceptance of the ______________ model, which placed the Sun at the center of the system and the Earth in orbit around it. This theory was prominently presented by ______________.

Answers

The first blank can be filled with the Heliocentric model, and the second blank can be filled with Copernicus.

The heliocentric model known as heliocentrism was proposed by the Renaissance astronomer, mathematician, and the Catholic cleric Nicolaus Copernicus resulting in the Copernican revolution.

It is the astronomical model, in which the planets and the Earth revolve around the Sun positioned at the middle of the Solar system. Factually, the heliocentric model was in contrast to geocentrism, in which Earth is positioned at the center of the Solar system.

Answer:

Heliocentric, Nicolaus Copernicus

Explanation:

I got the answer from USATestprep

If the hydrogen ion concentration is 10-7M, what is the pH of the solution?Show all work.

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Remember pH=-log(H ions). So it would be pH=-log(10^-7).

What is the mass in grams of 1.73 moles CaH2

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The mass of 1.73 moles CaH2 is 72.82 grams. The molar mass of CaH2 is 42.08 g/mol. This means that there are 42.09 grams in 1 mol. So, x grams will be in 1.73 mol of CaH2. Let's make a proportion: 42.09 g : 1 mol = x : 1.73 mol. x = 42.09 g * 1.73 mol : 1 mol. x = 72.82 g.

Air bags, which act as safety devices in cars, contain solid sodium azide. On impact, the sodium azide releasesnitrogen gas, which expands the air bag. The main benefit of using a gas instead of another type is that —
A. gas molecules are subject to ionic bonding
B. the separation of gas molecules is much greater than the volume they occupy
C. gases won’t explode the bag on very hot days
D. gas molecules don’t transfer excess Kinetic Energy

Answers

The answer is; D

The reason for this is because gases are compressible . Much of the energy of the impact created when your head hits the air bad is absorbed by the gas (through compression and rarefaction) hence reducing the damage to the head in case of an accident.

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