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patriot [66]
3 years ago
5

3

Chemistry
1 answer:
Marina86 [1]3 years ago
8 0

Answer:

  • 3
  • 6.941
  • 3
  • 3.2
  • 3

Explanation:

pls mark brainliest

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A new process converts potential energy of an object to kinetic energy. Neither work nor eat is added to the system. No reaction
blagie [28]

Answer:

Change in height of the object

Explanation:

Change in height of the object

Since ,

We know potential energy can be written as mgh where

P.E. = mgh

M = mass ,

g = gravity constant

h = height

Kinetic energy can be written as 0.5 mv²

So , the Potential energy = kinetic energy

Then ,

velocity of object = √2 gh

Since g is a constant ,

Hence ,

Height of object will determine the velocity.

5 0
4 years ago
A sample of gas is held at 1000C at a volume of 20 L. If the volume is increased to 40 L, what is the new temperature of the gas
kaheart [24]

Answer:

The new temperature will be 2546 K or 2273 °C

Explanation:

Step 1: Data given

The initial temperature = 1000 °C =1273 K

The volume = 20L

The volume increases to 40 L

Step 2: Calculate the new temperature

V1/T1 = V2/T2

⇒with V1 = the initial volume = 20L

⇒with T1 = the initial temperature = 1273 K

⇒with V2 = the increased volume = 40L

⇒with T2 = the new temperature = TO BE DETERMINED

20L/ 1273 K = 40L / T2

T2 = 40L / (20L/1273K)

T2 = 2546 K

The new temperature will be 2546 K

This is 2546-273 = 2273 °C

Since the volume is doubled, the temperature is doubled as well

8 0
3 years ago
PLEASE HELP THIS IS WORTH 13 POINTS
inysia [295]

Answer:

The chemical reaction is a Double Displacement

Explanation:

Balance the reaction of KOH + AlCl3 = KCl + Al(OH)3

6 0
3 years ago
Determine the empirical formula of a compound containing 8.56 g silicone of 43.2 g of chlorine
SpyIntel [72]

The empirical formula of the compound is SiCl₄.

<h3>Empirical formula of the compound</h3>

mass of silicon = 28 g/mol

mass of chlorine = 35.5 g/mol

<h3>molar ration: </h3>

Si = 8.56/28   =  0.306

Cl = 43.2/35.5  = 1.216

<h3>Combining ratio</h3>

Si = 0.306/0.306 = 1

Cl = 1.216/0.306 = 4

empirical formula = SiCl₄

Thus, the empirical formula of the compound is SiCl₄.

Learn more about empirical formula here: brainly.com/question/1603500

#SPJ1    

6 0
2 years ago
How many liters of fluorine gas, at standard temperature and pressure, will react with 23.5 grams of potassium metal? Show all o
natka813 [3]
The balanced chemical reaction is written as:

2K + F2 = 2KF

We are given the amount of potassium to be used in the reaction. THis will be the starting point. We do as follows:

23.5 g K ( 1 mol / 39.10 g) (1 mol F2 / 2 mol K ) ( 22.4 L / 1 mol ) = 6.73 L F2 gas needed
7 0
3 years ago
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