A few days ago
basic chemistry help?
please help me with these chemistry questions…
1) if 1500 white blood cell are lined up side by side they would form a row 1.0 inches long. What is the average diameter in micrometers of a single white blood cell (1 inch=2.54 cm) Express your answer in scientific notation.
2) In the laboratory you determined that the density of table salt is 2.19 g/cm^3. A handbook lists the density of table salt as 2.16 g/cm^3. Calculate the percent error.
thanks!
Top 1 Answers
A few days ago
Favorite Answer
1. To find the diameter, take the total lenght and divide by the number of white blood cells. Then convert to centimeters (use a ratio: diameterinch/diametercm = 1 / 2.54 and then cross multiply and solve. Then write it in scientific notation. I’m not sure where you are having problems with that question.
2. percent error = (observed-theoretical)/(theoretical) then multiply by 100. Observed is what you got doing the experiment and theoretical is the predicted value
0
- Academic Writing
- Accounting
- Anthropology
- Article
- Blog
- Business
- Career
- Case Study
- Critical Thinking
- Culture
- Dissertation
- Education
- Education Questions
- Essay Tips
- Essay Writing
- Finance
- Free Essay Samples
- Free Essay Templates
- Free Essay Topics
- Health
- History
- Human Resources
- Law
- Literature
- Management
- Marketing
- Nursing
- other
- Politics
- Problem Solving
- Psychology
- Report
- Research Paper
- Review Writing
- Social Issues
- Speech Writing
- Term Paper
- Thesis Writing
- Writing Styles