dndmusic9772

Can you please check if my answers are correct, thank you.

Paraphrase this article

Source A: Mary Cooper's Diary

Is it a primary or secondary source?

This is a primary source because it is a firsthand account written by someone who lived during the time period being studied.

Is it a reliable source?

The reliability of this source depends on Mary Cooper's credibility as a writer and the accuracy of her observations. However, as a primary source, it provides valuable insight into the daily lives of women in colonial America.

What is the main idea of the source?

The main idea of the source is to provide a personal account of Mary Cooper's daily life as a woman in colonial America. She writes about her daily activities, including household chores, socializing with friends, and attending church.

Source B: Women's Roles Article

Is it a primary or secondary source?

This is a secondary source because it is an article written by a historian who has researched and analyzed primary sources related to the topic.

Is it a reliable source?

The reliability of this source depends on the author's expertise and the quality of their research. However, as a secondary source, it provides valuable analysis and interpretation of primary sources related to the daily lives of women in colonial America.

What is the main idea of the source?

The main idea of the source is to provide an overview of the roles and responsibilities of women in colonial America. The article discusses how women's lives were shaped by their social class, religion, and geography, and how they contributed to their families and communities

through their work and social activities.

In a certain chemical reaction Compound A combines with Compound B to produce Compound C (and no other products). Measurements were taken of the amounts of A and B present before and after a reaction that produced some C:

1) Calculate the theoretical yield of C. Round your answer to the nearest 0.1g.

2) Suppose the percent yield of C in this reaction was 48.%. Calculate the actual amount of C that was isolated at the end of the reaction. Round your answer to the nearest0.1g.

infinity

(3^k)/(2^k+5k^2)

k=1

Gaseous methane (CH4) reacts with gaseous oxygen gas (O2) to produce gaseous carbon dioxide (CO2) and gaseous water (H2O). What is the theoretical yield of water formed from the reaction of 0.96g of methane and 3.3g of oxygen gas?  

Round your answer to 2 significant figures

What are the options for above question if my answer is wrong?

Rephrase these paragraphs

Part A:

The area of the rectangular field is:

(2.7 x 10^3 ft) x (3.5 x 10^3 ft) = 9.45 x 10^6 ft^2

Half of the field is used to grow crops, so the area of the portion with crops growing is:

(1/2) x 9.45 x 10^6 ft^2 = 4.725 x 10^6 ft^2

Part B:

To write the final answer in scientific notation with the correct number of significant digits and units, we need to round the result to two significant digits and include the units:

4.725 x 10^6 ft^2 ≈ 4.7 x 10^6 ft^2

Part C:

The original measurements in the problem were given to two significant digits, so the final answer should also have two significant digits. We rounded up from 4.725 to 4.7 because the next digit (5) is greater than 5, which means we round up according to rounding rules. Finally, the units of the answer are square feet, which come from multiplying the length and width of the rectangle.