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grandymaker [24]
3 years ago
12

Use the graph to determine the velocity between 6 and 12 seconds. m/s What was the velocity over the entire trip? m/s

Chemistry
2 answers:
likoan [24]3 years ago
6 0

Answer:

-2 m/s

0 m/s

Explanation:

I just did it

natka813 [3]3 years ago
6 0

<u>Answer:</u> The velocity of the particle is -2 m/s

<u>Explanation:</u>

Velocity is defined as the ratio of displacement of a particle to the time taken by the particle. The units of velocity is meters per second.

The equation representing velocity of a particle is given as:

\text{Velocity}=\frac{\text{Displacement}}{\text{Time}}

From the graph:

The particle has traveled a distance of 12 m in the downward direction in between 6 to 12 seconds.

Displacement of particle = -12 m

Time taken = 12 - 6 = 6 sec

Putting values in above equation, we get:

\text{Velocity}=\frac{-12m}{6sec}=-2m/s

Negative side represents the particle is moving in downward direction.

Hence, the velocity of the particle is -2 m/s

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Some properties of liquid water are very different from those of solid water (ice). Explain why freezing is considered a physica
drek231 [11]

Answer:

A chemical change is a change in the chemical makeup of a substance and results in a new substance. Ice and water both have the same chemical makeup - ice is just a different state and has the same atoms but in an expanded form.

Explanation:

8 0
3 years ago
An aqueous nacl solution is made using 112 g of nacl diluted to a total solution volume of 1.00 l. calculate the molarity, molal
worty [1.4K]
Q1)
molarity is defined as the number of moles of solute in 1 L of solution.
the NaCl solution volume is 1.00 L
number of moles NaCl  = NaCl mass present / molar mass of NaCl 
NaCl moles = 112 g / 58.5 g/mol = 1.91 mol 
the number of moles of NaCl in 1.00 L of solution is - 1.91 mol 
therefore molarity of NaCl is 1.91 M

Q2) 
molality is defined as the number of moles of solute in 1 kg of solvent.
density is mass per volume. 
density of the solution is 1.08 g/mL. 
therefore mass of the solution is = density x volume 
mass = 1.08 g/mL x 1000 mL = 1080 g
since we have to find the moles in 1 kg of solvent 
mass of solvent = 1080 g - 112 g = 968 g
number of moles of NaCl in 968 g of solvent - 1.91 mol 
therefore number of NaCl moles in 1000 g - (1.91 mol / 968 g) x 1000 g/kg = 1.97 mol/kg
molality of NaCl solution is 1.97 mol/kg


Q3) 
mass percentage is the percentage of mass of solute by total mass of the solution 
mass percentage of solution = mass of solute / total mass of the solution 
mass of solute = 112 g
total mass of solution = 1080 g
mass % of NaCl = 112 g / 1080 g x 100%
therefore mass % of NaCl = 10.4 %
answer is 10.4 %
5 0
3 years ago
What are 4 energy transfer
Klio2033 [76]
What kind of energy transfer
5 0
3 years ago
Show the comparative structure of union Parishad and Pourahava in chart.
Bogdan [553]

Answer:

how will I show?

Explanation:

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6 0
3 years ago
What mass of oxygen is needed to burn 54.0 grams of butane c4h10
Jobisdone [24]

The moles of oxygen required to burn Butane is 6 moles.

<h3>What is a Combustion Reaction?</h3>

A reaction in which fuel gets oxidised by an oxidising agent producing a large amount of heat is called a combustion reaction.

In this question

Butane is burnt with oxygen

Molar mass of C₄H₁₀ = (12.0×4 + 1.0×10) g/mol = 58.0 g/mol

Molar mass of O₂ = 16.0×2 g/mol = 32.0 g/mol

Balanced equation for the reaction:

2C₄H₁₀ + 13O₂ → 8CO₂ + 10H₂O

Mole ratio C₄H₁₀ : O₂ = 2 : 13

The given mass = 54grams

moles = 54/58 = 0.93 moles

The mole of oxygen required =

0.93/ x = 2/13

0.93*13/2 = x

x = 6.045 moles

Therefore 6 moles of oxygen are required to burn Butane.

To know more about Combustion Reaction

brainly.com/question/12172040

#SPJ1

6 0
2 years ago
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