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2 years ago

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Physics

1 answer:

inysia [295]2 years ago

5 0

Hello and Good Morning/Afternoon:

Original Question: C₂H₅OH + __O₂ → __CO₂ + __ H₂O

To balance this equation:

⇒ must ensure that there is an equal number of elements on both sides of the equation at all times

Let's start balancing:

On the left side of the equation, there are 2 carbon molecule

⇒ but only so far one on the right side

C₂H₅OH + __O₂ → 2CO₂ + __ H₂O

On the left side of the equation, there are 6 hydrogen molecules

⇒ but only so far two on the right side

C₂H₅OH + __O₂ → 2CO₂ + 3H₂O

On the right side of the equation, there are 7 oxygen molecules

⇒ but only so far three on the left side

C₂H₅OH + 3O₂ → 2CO₂ + 3H₂O

Let's check and make sure we got the answer:

C₂H₅OH + 3O₂ → 2CO₂ + 3H₂O

2 Carbon ⇔ 2 Carbon

6 Hydrogen ⇔ 6 Hydrogen

7 Oxygen ⇔ 7 oxygen

Thefore the coefficients in order are:

⇒ 1, 3, 2, 3

Answer: 1,3,2,3

Hope that helps!

#LearnwithBrainly

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Let's say you have a plot for Pendulum experiment. Let's assume g for this experiment was measured (from the slope of the plot)

Gemiola [76]

Answer:

0.0052 m

Explanation:

$T^2=0.021\ s^2$

g = Acceleration due to gravity = 9.78 m/s²

Time period

$T=2\pi \sqrt{\frac{L}{g}}\\\Rightarrow T^2=4\pi^2 \frac{L}{g}$

$\Rightarrow L=\frac{T^2g}{4\pi^2}$

$\Rightarrow L=\frac{0.021\times 9.78}{4\pi^2}\\\Rightarrow L=0.0052\ m$

The length of the pendulum is 0.0052 m

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3 years ago

a 2kg mass is held 4m above the ground. what is the approximate potential energy of the mass with respect to the ground?

aleksley [76]

The potential energy of the object is 78.4 J

Explanation:

The gravitational potential energy (GPE) of an object is the energy possessed by the object due to its position in a gravitational field.

For an object near the Earth's surface, the GPE is given by:

$GPE=mgh$

where

m is the mass of the object

$g=9.8 m/s^2$ is the acceleration of gravity near the Earth's surface

h is the height of the object relative to the surface

For the object in this problem,

m = 2 kg

h = 4 m

Substituting, we find its GPE:

$GPE=(2)(9.8)(4)=78.4 J$

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3 years ago

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Blababa [14]

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2 years ago

Which of the following lines (of latitude or longitude) would be represent by 180

m_a_m_a [10]

Prime meridian (lines of longitude) would be represent by 180 degree

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Explanation:

The longitudes are vertical lines, and they intersect with latitudes to form grids. Sunlight takes about 4 minutes to pass from one grid to another. So, they are designated either West or East, besides their number in order to identify the location.

East longitudes cover 180 degrees and West ones cover west. So, totally there are 360 degree longitudes, having one standard one, called Prime Meridian. The Prime Meridian stays at the center of the earth, and hence termed as the center longitude and noble of all the verticals.

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4 years ago

A hockey player skates with an average speed of 8.25 m/s. The distance the player will travel in 5.60 s is __________ .

OverLord2011 [107]

<h2>Greetings!</h2>

To find this value, you need to remember the speed formula:

3 = 6 / 2

Speed = distance ÷ time

Rearrange to make distance the subject:

Distance = speed * time

Simply plug these values into this:

5.6 * 8.25 = 46.2

<h3>So the player will travel 46.2 metres!</h3>
<h2>Hope this helps!</h2>

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3 years ago