Chemistry Middle School

Which of the following is an unbalanced equation?
A. CaCO3 --> CaO + CO2
B. PbO2 + 2H2-->2Pb + H2O
C. CS2 + 2O2 --> CO2 + 2SO2

Answers

Answer 1

Answer:

B. PbO2 + 2H2-->2Pb + H2O

Explanation:

Which Of The Following Is An Unbalanced Equation?A. CaCO3 --> CaO + CO2B. PbO2 + 2H2-->2Pb + H2OC.
Answer 2
It is B. Pb02 + 2H2

Related Questions

Scientific laws differ from scientific theories because laws do not provide
A)
a hypothesis.
B)
a description
C)
an explanation
D)
a statement.

Answers

A) a hypothesis hope it helped :)

Please help me with this I will give out extra points with the brain thing if you help me with this science question 3/5 image below. I promise

Answers

Answer:

A) 200 m/s2

Explanation:

Force is the push or pulls on an object with mass that causes it to change velocity or to accelerate.

Force represents a vector, which means it has both magnitude and direction.

Given:

Mass of metal ball = 0.025 kg

Force = 5 N

To Find:

Acceleration, = ?

Solution:

Formula:

answer is 200 m/s2 lol

How is the Sun related to day and night and the change of seasons?

Answers

Explanation:

As the Earth moves around the sun during a year, the northern half of the Earth is tilted towards the sun in the summer, making daytime longer than night. In winter, this reverses; the earth tilts away from the sun and nighttime becomes longer

Answer:

As the Earth moves around the sun during a year, the northern half of the Earth is tilted towards the sun in the summer, making daytime longer than night. In winter, this reverses; the earth tilts away from the sun and nighttime becomes longer.

Explanation:

hope this helps have a good rest of your day :) ❤

hurry please!!!
a) 42%

b) 14%

c) 64%

d) 100%

Answers

Answer:

A)42%

Explanation:

10+22+15+11=58

100-58=42

Is there a 28% because if you add all of that up it equals 72 and subtract 72 from 100 gives you 28%

What coefficient should be used to make the following equation balanced? N2+O2--> _NO

Answers

                 ║∧║······→Hello.←······║∧║

                                          Your answer should be:

                                                N2 + O2 → 2NO

····················································································

I hope this answered your question!

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The coefficient used to make the following equation balanced: N2 + O2 → NO is 2.

BALANCING EQUATION:

Balancing an equation means ensuring that each atom of an element on both sides of an equation.

To balance an equation, coefficients, which are numbers placed in front of the elements, are used.

According to this question, the following equation is given:

N2 + O2 → NO

To balance the equation, we make use of coefficient 2 in front of nitrogen oxide (NO) as follows:

N2 + O2 → 2NO

Learn more at: https://brainly.com/question/11322377?referrer=searchResults

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