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Ksenya-84 [330]
4 years ago
14

Describe the relationship between a moving objects mass and its kinetic energy.

Chemistry
1 answer:
seropon [69]4 years ago
7 0
<span>Kinetic energy is the energy of mass in motion. The kinetic energy of an object is the energy it has because of its motion. ... When we double the mass, we double the energy; however, when we double the velocity, energy increases by a factor of four.</span>
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As Mia mixed two substances in a test tube, she noticed that the test tube became warm. She also noticed gas coming from the tes
ICE Princess25 [194]

Answer:

A new substance was forming

Explanation:

Two types of changes are undergone by substances involved in a reaction. They are physical changes and chemical changes. Physical changes are those changes that does not involve the synthesis of a new product. On the other hand, CHEMICAL CHANGES alters the chemical composition of the substances involved, and hence, new substances are formed.

Chemical changes are usually characterized by change of temperature, color change, evolution of a gas etc. According to this question, Mia mixed two substances in a test tube and noticed that the test tube became warm. She also noticed gas coming from the test tube. Based on Mia's observations, a CHEMICAL CHANGE, LEADING TO THE FORMATION OF NEW SUBSTANCE, HAS OCCURRED.

7 0
3 years ago
Compound x is twice as soluble in diethyl ether as it is ethanol and is only sparingly soluble in water. compound y is soluble i
tatiyna

The question has mentioned three solvents: water, ethanol, and diethyl ether. Water is miscible with ethanol but not diethyl ether. As a result, it would be possible to separate a mixture of water and diethyl ether with a separatory funnel but not a mixture of water and ethanol using such techniques.

Substance X dissolves well in diethyl ether but not in water; substance Y dissolves well in water but not in diethyl ether. As a result, the two components of this mixture would end up in different layers when dissolved in a mixture of water and diethyl ether- which separate into two layers itself. One would expect to find

  • a solution mostly of substance X in the diethyl ether layer, and
  • a solution mostly of substance Y in the water layer.

Given the fact that diethyl ether has a density less than that of water (0.713 \; \text{g} \cdot \text{ml}^{-1} as opposed to 1.00 \; \text{g} \cdot \text{ml}^{-1},) it would form the upper layer of its mixture with water. Separate the mixture with a separatory funnel. The question stated that both X and Y are under the solid state while the two solvents are both liquidsm implying that the boiling points of both species are higher than that of their respective solvent. Therefore heat the solutions till all solvent had evaporated to obtain X and Y.

7 0
3 years ago
A sequence of thermonuclear fusion processes inside massive stars can continue to transform the nuclei of elements such as carbo
nlexa [21]

Answer:

Iron is the element that is produced at the limit of the reaction.

Explanation:

In nuclear fusion 2 lighter nuclei are combined together into a single nucleus releasing a tremendous amount of energy in the process.

Up to fusion of iron the reaction of fusion is exothermic but when iron atom pops out the reaction becomes endothermic and it requires very high amount of energy to fuse iron atoms which is not available thus marking an end to the fusion reaction.

5 0
3 years ago
he mass of a single molybdenum atom is 1.59×10-22 grams. How many molybdenum atoms would there be in 38.3 milligrams of molybden
laiz [17]

Answer:

2.41 × 10²⁰ atoms

Explanation:

Step 1: Given data

  • Mass of a single molybdenum atom: 1.59 × 10⁻²² g
  • Mass of the molybdenum sample: 38.3 mg

Step 2: Convert the mass of the sample to grams

We will use the relationship 1 g = 1,000 mg.

38.3 mg × (1 g/1,000 mg) = 0.0383 g

Step 3: Calculate the number of atoms in 0.0383 g of molybdenum

0.0383 g × (1 atom/1.59 × 10⁻²² g) =  2.41 × 10²⁰ atom

5 0
3 years ago
A sample of gas occupies a volume of 57.7 mL. As it expands, it does 128.5 J of work on its surroundings at a constant pressure
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I dont know anything about this srry
6 0
3 years ago
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