The Library of Congress system for the following book is that every book receives a classification number that starts with 1-3 letters. Those letters give a general idea of the topic. The "Teaching New Math" book It's in the Q's for sciences, and more specifically QA's under math. So the answer will be looking for is QA.
A library is a room or building or place where many books are kept. Generally, libraries are public and allow people to take the books to read in their homes. Most libraries admit people to borrow books, and they can keep them for some weeks.
The primary purpose of the public library is to provide resources and services in a variety of media to meet the needs of individuals and groups for education, information, and personal development, including recreation and leisure.
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Answer:
A. Bubbles formed
Explanation:
When a student added a piece of limestone to a solution of hydrochloric acid, bubbles are formed.
The bubbles are as a result of the CO2 gas that is formed.
Below is the reaction:
CaCO3+2HCl → CO2+H2O + Ca++ + 2Cl-
From the left hand side, we can see that the reaction is with limestone and hydrochloric acid. Their reaction forms carbon dioxide gas (CO2), water (H2O), dissolved calcium (Ca++) and dissolved chlorine (Cl-) on the right hand side.
With due observation, bubbles will be seen evolving from the reaction. These bubbles formed is the carbon dioxide gas which reveals that a reaction is taking place.
Grandpa Joe becomes revitalized when he sees his grandson. Charlie is the highlight of his day.
<span>Taking a positive integer and squaring it but u have to </span>multiply it by itself
In 'The Portrait of a Lady' by Khushwant Singh, the narrator depicts his grandmother as someone that displays immeasurable love and selflessness.
She spends her life by taking care of the narrator during his youth and even though he grows and keeps his distance, she remains loving and letting him pursue his interests.
The narrator has a great feeling of respect for his grandmother and though she is not physically beautiful, he describes her inner beauty by comparing her to the purity of nature. The narrator also remarks that she was a lady to the last.
