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Tju [1.3M]
3 years ago
12

The correctly balanced equation for H2O2 → H2O + O2 is A) H2O2 → 2H2O + O2 B) H2O2 → H2O + 2O2 C) 2H2O2 → 4H2O + O2 D) 2H2O2 → 2

H2O + O2
Chemistry
1 answer:
miss Akunina [59]3 years ago
4 0

Answer : The correct option is, (D) 2H_2O_2\rightarrow 2H_2O+O_2

Explanation :

Balanced chemical equation : According to the law of conservation of matter, the number of individual elements present on the reactant side must be equal to the number of individual elements present of product side.

The given balanced chemical reaction will be,

2H_2O_2\rightarrow 2H_2O+O_2

Hence, the correct balanced chemical reaction is, (D) 2H_2O_2\rightarrow 2H_2O+O_2

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A sample of ice absorbs 15.6kJ of heat as it undergoes a reversible phase transition to form liquid water at 0∘C. What is the en
Murrr4er [49]

Answer:

Entropy change of ice changing to water at 0°C is equal to 57.1 J/K

Explanation:

When a substance undergoes a phase change, it occurs at constant temperature.

The entropy change Δs, is given by the formula below;

Δs = q/T

where q is the quantity of heat absorbed or evolved in Joules and T is temperature in Kelvin at which the phase change occur

From the given data, T = 0°C = 273.15 K, q = 15.6 KJ = 15600 J

Δs = 15600 J / 273.15 K

Δs = 57.111 J/K

Therefore, entropy change of ice changing to water at 0°C is equal to 57.1 J/K

8 0
4 years ago
Convert to scientific notation : 520,000,000
PIT_PIT [208]

Answer:

5.2 x 10^8

Explanation:

3 0
3 years ago
Read 2 more answers
What are the major parts of the ecosystem
eduard

Answer:

Ecosystems have lots of different living organisms that interact with each other. The living organisms in an ecosystem can be divided into three categories: producers, consumers and decomposers. They are all important parts of an ecosystem. Producers are the green plants.

Explanation:

Hope this helps

4 0
3 years ago
A gas exerts a pressure of 0.62 atm. Convert this to kPa and mmHg. Be sure to show your work.
IRINA_888 [86]

Answer:

The answer to your question is 0.62 atm = 62.82 kPa = 471.2 mmHg

Explanation:

Data

P = 0.62 atm

P = ? kPa

P = ? mmHg

Process

1.- Look for the conversion factor of atm to kPa and mmHg

 1 atm = 101.325 kPa

1 atm = 760 mmHg

2.- Do the conversions

                  1 atm ----------------- 101.325 kPa

                  0.62 atm ------------  x

                   x = (0,62 x 101.325) / 1

                  x = 62.82 kPa

                   1 atm ------------------ 760 mmHg

                   0.62 atm ------------  x

                   x = (0.62 x 760)/1

                   x = 471.2 mmHg                

4 0
4 years ago
Convert the average temperatures for each collected data point given below from °C to K. Plot the average cell potentials E (y-a
koban [17]

Answer:

Explanation:

The equation of above line , y = 0.0005x+ 0.458

This can be compared with y = mx+c

Hence slope, m = 0.0005 and Y-intercept, c = 0.458

Or it can be plotted manually where straight line has to be drawn touching maximum number of data points. After drawing a straight linear line, we need to take any two points from the straight line and slope is calculated

Slope,

m = \frac{y_2-y_1}{x_2-x_1}

and y -intercept is calculated using extraplotting backwards such that it touches the Y-axis. the point where straight line touches Y-axis is Y-intercept (c).

Plot the average cell potentials E (y-axis) vs T (x-axis). image attached

7 0
3 years ago
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