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3 years ago

Is the following chemical reaction balanced? 2H2O2 H2O + O2 ..... is it yes or no ?

Physics

2 answers:

myrzilka [38]3 years ago

8 0

Yes it is a chemical reaction

myrzilka [38]3 years ago

5 0

Answer:

The given chemical reaction is not balance.

Explanation:

Given chemical reaction is not balance because,

Law of conservation of mass states that mass can neither be created nor be destroyed but it can only be transformed from one form to another.

In a chemical reaction, total mass on the reactant side is equal to the total mass on the product side.

We given that,

$2 H_{2}O_{2} \rightarrow H_{2}O+O_{2}$

This is the unbalance reaction because in the reaction

In reactant side, the number of hydrogen atoms is 4 and oxygen atoms is 2.

In product side, the number of hydrogen atoms is 2 and oxygen atoms is 2.

In this reaction, We will multiply of the hydrogen atom by 2 in product side then the reaction becomes balance.

$2 H_{2}O_{2} \rightarrow 2H_{2}O+O_{2}$

Hence, The given chemical reaction is not balance.

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The spring in the muzzle of a child's spring gun has a spring constant of 730 N/m. To shoot a ball from the gun, first the sprin

Korolek [52]

Answer:

a. V=11.84 m/s

b.x=0.052m

Explanation:

a).

Given

$K=730 N/m$ , $m=0.053kg$ , $h=1.90m$ .

$v_f^2=v_i^2+2*g*h$

$v_i^2=2*g*h=2*9.8m/s^2*1.9m$

$v_i=\sqrt{2*9.8m/s^2*1.9m}=\sqrt{37.24 m^2/s^2}$

$v_i=6.1 m/s$

$v_i=V*sin(31)$

$V=\frac{v_i}{sin(31)}=\frac{6.1m/s}{sin(31)}$

$V=11.84 m/s$

b).

$K_k=\frac{1}{2}*K*x^2$

No friction on the ball so:

$x^2=\frac{2*K_k}{K}$

$x=\sqrt{\frac{2*0.053kg*9.8m/s^2*1.9m}{730N/m}}$

$x=\sqrt{2.7x10^{-3}m^2}=0.052m$

5 0

3 years ago

A rope is vibrating so as to form the standing wave pattern shown. How many antinodes are present in the rope?a- 5b- 4c- 8d- 10e

denpristay [2]

c) 8

Explanation

When you shake a rope, the particles in the rope move up and down, and the wave moves forward or away from the source of energy. The rope moves in a direction that is perpendicular

Nodes are the places where the rope doesn't move at all; antinodes occur where the motion is greatest.

Step 1

let's check the graph:

a) Nodes

and Antinodes

so, in the ripe there are 8 antinodes

therefore, the answer is

c) 8

4 0

1 year ago

WILL GIVE BRAINLIEST IF ANSWERED FIRST AND CORRECTLY!!!!

Vlad1618 [11]

Answer:

I think its the 2nt

Explanation:

PLZ MARK AS BRAINLEST!!!

4 0

3 years ago

Read 2 more answers

An 805-kg race car can drive around an unbanked turn at a maximum speed of 54 m/s without slipping. the turn has a radius of cur

SIZIF [17.4K]

(a) Equating centripetal force to friction force, one finds the relation
v² = kar
for car speed v, coefficient of friction k, radius of curvature r, and downward acceleration a.

There is already downward acceleration due to gravity. The additional accceleration due to the wing is
a = F/m = 10600 N/(805 kg) ≈ 13.1677 m/s²
We presume this is added to the 9.80 m/s² gravity provides, so the coefficient of friction is
k = v²/(ar) = (54 m/s)²/((13.1677 m/s² +9.80 m/s²)·(155 m))
k ≈ 0.8191

(b) The maximum speed is proportional to the square root of the downward acceleration. Changing that by a factor of 9.80/(9.80+13.17) changes the maximum speed by the square root of this factor.
max speed with no wing effect = (54 m/s)√(9.8/22.97) ≈ 35.27 m/s

8 0

3 years ago

Which three characteristics make a glowing piece of charcoal a blackbody radiator? A. The frequencies of EMR it emits depend on

Eva8 [605]

Answer:

A. The frequencies of EMR it emits depend on its temperature

B. It emits only one frequency of EMR

C. It absorbs most of the EMR it receives

Explanation:

A blackbody is an object that absorbs most of the electromagnetic spectrum of energy that falls on it.

According to law to reradiates most of the available energy back on top the outer space at an efficiency of 100% and thus radiation may be in the visible range of temperature than are in 1000K.

4 0

3 years ago