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3 years ago

Carbon bums in the presence of oxygen to give carbon dioxide. Which chemical equation describes this reaction?

Physics

1 answer:

diamong [38]3 years ago

4 0

B. carbon + oxygen -- carbon dioxide

Explanation:

The best equation that describes a reaction where carbon combines by burning in the presence of oxygen to produce carbon dioxide is:

carbon + oxygen -- carbon dioxide

Every chemical reaction is made up of reactants and products

Reactants are the species on the left hand side of an equation, the products are those on the right hand side.

The reactants combines chemically to give produces.

The kind of reaction depicted above is a synthesis or combination reaction where two species combines to gives a product or more;

C + O₂ → CO₂

learn more:

Chemical reaction brainly.com/question/3953793

#learnwithBrainly

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A box is at rest on a table. What can you say about the forces acting on the box?

Nikitich [7]

You can tell a lot about an object that's not moving,
and also a lot about the forces acting on it:

==> If the box is at rest on the table, then it is not accelerating.

==> Since it is not accelerating, I can say that the forces on it are balanced.

==> That means that the sum of all forces acting on the box is zero,
and the effect of all the forces acting on it is the same as if there were
no forces acting on it at all.

==> This in turn means that all of the horizontal forces are balanced,
AND all of the vertical forces are balanced.

Horizontal forces:
sliding friction, somebody pushing the box

All of the forces on this list must add up to zero. So ...

(sliding friction force) = (pushing force), in the opposite direction.

If nobody pushing the box, then sliding friction force = zero.

Vertical forces:
gravitational force (weight of the box, pulling it down)
normal force (table pushing the box up)

All of the forces on this list must add up to zero, so ...

(Gravitational force down) + (normal force up) = zero

(Gravitational force down) = -(normal force up) .

6 0

3 years ago

Read 2 more answers

Name the fundamental units involved in pascal

gtnhenbr [62]

Explanation:

Hey there!

Here,

Pascal is a unit of pressure.

$pressure = \frac{f}{a}$

Now, As per the formula the units are:

kg, m and s^2.

Hope it helps...

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3 years ago

How much does it cost to install led lights in car?

Goryan [66]

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3 years ago

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100 kw of power is delivered to the other side of a city by a pair of power lines with the voltage difference of 13014.1 v.

FinnZ [79.3K]

A) The power delivered to the lines is
$P_{in}= 100 kW=1 \cdot 10^5 W$
And the voltage at which the lines work is
$V=13014.1 V$
Since the power delivered is the product between the voltage and the current:
$P=VI$
We can find the current flowing in the lines:
$I= \frac{P}{V}= \frac{1 \cdot 10^5 W}{13014.1 V}=7.68 A$

b) The voltage change along each line can be found by using Ohm's law:
$\Delta V = IR = (7.68 A)(10 \Omega)=76.8 V$

c) The power wasted as heat along each line is given by:
$P_d = I^2 R = (7.68 A)^2 (10 \Omega) = 590 W$
And since we have 2 lines, the total power wasted as heat in both lines is
$P_d = 2 \cdot 590 W=1180 W$

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3 years ago

A star with the mass (M=2.0×1030kg) and size (R=3.5×108m) of our sun rotates once every 30.0 days. After undergoing gravitationa

Gre4nikov [31]

Answer:

$r=97.22x10^{3} m$