Explanation:
The balanced chemical equation is given as:
2H₂O₂ → O₂ + 2H₂O
А There are two peroxide molecules on the reactant side.
The statement is correct because the left hand side is the reactant side. We can read the reaction as;
2 molecules of hydrogen peroxide decomposed to given 1 molecule of oxygen gas and 2 molecules of water .
D Mass must be conserved so there are an equal number of molecules in the reactants and products.
E Mass must be conserved so there are an equal number of atoms in the reactants and products.
Since the chemical equation is balanced, choices D and E are correct. The reaction will have equal number of molecules and atoms on both sides of the expression.
Answer: stratosphere
The stratosphere is the second to last layer of atmosphere to the Earth. It is about 40,000 feet above, and this is the range where planes fly. So, the answer is stratosphere.
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Answer:
Acceleration is a vector quantity that is defined as the rate at which an object changes its velocity. An object is accelerating if it is changing its velocity.
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Answer:
The system analysis phase of the SDLC includes four main activities: requirements modeling, data and process modeling, object modeling, and consideration of development strategies.
Explanation:
- SLDC is a Software Development Life Cycle. It is basically a process of designing, developing and testing high-quality software by a software developing industries.
- It has four processes as mentioned in the question which is a process for improving and refining the quality of software.
- SLDC is a methodology that is used by every software company to develop a fine and high-quality software.
