Answer:
Concrete operational stage starts at age seven and continues to age 11
(7-11).
This stage is characterized by logical thought.
An important development during this stage is mastery of the concept of conservation as well the ability to reason logically.
Children have learned that pouring liquid from a tall, narrow glass into a shallow dish doesn't reduce the amount of fluid.
During this stage , a child's thought starts to grasp the concept of time , space and numbers. The child starts using categories and principles.
An egg white contains fewer calories than a whole egg. It is also lower in protein, cholesterol, fat, vitamins, and minerals.
But if you really want it then go ahead.
The Errors for the setup or preparation of ammonia gas includes:
- inadequate temperature use
- absence of a catalyst
- inadequate pressure during preparation of the ammonia gas.
Ammonia gas is the hydride of nitrogen. In nature, this gas is produced when nitrogenous matter decays in the absence of air.
In the industrial preparation of ammonia gas, it is manufactured from nitrogen and hydrogen by the Haber process.
Since the direct combination between nitrogen and hydrogen is reversible, special conditions of reaction are necessary for the optimum yield of ammonia. These include:
- Catalyst: The presence of finely divided iron as a catalyst is necessary for the optimum yield of ammonia gas.
- Temperature: the Haber process requires the temperature of about 450°C for the optimum yield of ammonia gas
- Pressure: A pressure of about 200 atmospheres is required.
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brainly.com/question/2008743
<span>Dementia
is a persistent disorder that damages the mental processes which are most
commonly are visible through impaired reasoning, changes in personality, and
memory disorders. Generally, this is the term used for the decline in mental
capability. People with dementia are institutionalized because of the changes
in their personality. The answer to this item would be false. </span>
