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ratelena [41]
3 years ago
12

sprinters set in the starting blocks at the beginning of a race rely on what kind of energy conversion

Chemistry
1 answer:
Vikki [24]3 years ago
8 0
<span>Earth's gravitational potential energy: GPE = mgh = Gravity (9.81m/s2) × Mass (kg) × Height (m)
it's k</span><span>inetic energy</span>
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In a science lab, Cash mixes two clear liquids together in a beaker. Bubbles are produced, and a white solid forms and settles t
Novosadov [1.4K]

Answer:

A chemical change occurred, so even if Cash heats it, the white solid will remain.

Explanation:

  • A physical change occurred, so if Cash heats it, the white solid will dissolve to form the original mixture of clear liquids.
  • A physical change occurred, so even if Cash heats it, the white solid will remain.
  • A chemical change occurred, so if Cash heats it, the white solid will dissolve to form the original mixture of clear liquids.
  • A chemical change occurred, so even if Cash heats it, the white solid will remain.

<em>The correct answer would be that a chemical change occurred, so even if Cash heats it, the white solid will remain.</em>

Chemical changes occur when atoms in a substance or mixture of substances are rearranged, leading to the formation of new substances.

<u>In this case, the mixture of the two clear liquids led to the formation of gas in form of bubbles and a white solid forms that settle at the bottom. The formation of these 2 substances from the mixture of the two clear liquid is an indication of chemical reaction/changes. Hence, even if cash heats the resulting mixture, the white solids will likely remain.</u>

6 0
3 years ago
Read 2 more answers
Explain natural fiber extraction
Alex

Explanation:

natural fibre, any hairlike raw material directly obtainable from an animal, vegetable, or mineral source and convertible into nonwoven fabrics such as felt or paper or, after spinning into yarns, into woven cloth. ... Most textile fibres are slender, flexible, and relatively strong.

6 0
3 years ago
Read 2 more answers
A 45.0L gas cylinder contains 988 He at 23 degrees C what is the pressure inside the cylinder​
gregori [183]

Answer:

P = 133.4 atm

Explanation:

Given data:

Mass of helium = 988 g

Volume = 45.0 L

Temperature = 23°C (23+273= 296 K)

Pressure of cylinder = ?

Solution:

Number of moles of helium:

Number of moles = mass/ molar mass

Number of moles = 988 g/ 4 g/mol

Number of moles = 247 mol

Pressure:

PV = nRT

P = nRT/V

P = 247 mol × 0.0821. atm. L/mol. K × 296 K / 45 L

P = 6002.5 / 45 L

P = 133.4 atm

8 0
3 years ago
Methane reacts with chlorine to produce methyl chloride and hydrogen chloride. Once formed, the methyl chloride may undergo furt
balandron [24]
Your gonna half to space this out in order for me to answer if you don’t mind. I’ll answer in the comments
5 0
3 years ago
Water enters a 4.00-m3 tank at a rate of 6.33 kg/s and is withdrawn at a rate of 3.25 kg/s. The tank is initially half full.
olga55 [171]

Answer:

At the start of the process, the volume not occupied by the water is 2 m3

Explanation:

At the start of the process you have a half full tank. It means that also a half is empty (not occupied by water).

Since the volume is 4 m3, 2 m3 are full (occupied by water) and 2 m3 (not occupied by water).

The volume in time will be

V(t)=V_0+(f_i-f_o)*t\\\\V(t) = 2 +(6.33/1000-3.25/1000)*t=2+0.00308*t \, \, [m3]

8 0
3 years ago
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