Saturday
December 20, 2014

Homework Help: chemistry URGENT

Posted by jazz on Saturday, April 26, 2014 at 1:17pm.

I need someone to check my answers to make sure that I have the correct answers. (3 Part Question)

Two students each measure the density of a quartz sample three times:

Student A Student B
3.20 g/mL 2.82 g/mL
2.58 g/mL 2.48 g/mL
2.10 g/mL 2.59 g/mL
mean 2.63 g/mL 2.63 g/mL

1. which student measured density with the greatest precision? explain your answer.
I think that student B, because their measurement where closest to each other.

2. which student measured density with the greatest accuracy? explain your answer.
I think it was student B as well, because their measurement was closest to the correct value.

3. Are the errors for these students random or systematic? Explain
I think that both students errors were random because each of these measurements were either higher or lower than the accepted value.

Please let me know if I am correct in my thinking.

thanking you in advance

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Maths - Please could I have some guidance and advice on the following question? ...
English - You are going to take a quiz. I'll distribute exam papers. You should...
English - procedure: Formative Test Now. let's check how well you can use the ...
English - Now, let's check how well you can use the expressions you've learned. ...
Math - I need someone to check and go over my answers to make sure they are ...
Math - I need someone to check and go over my answers to make sure they are ...
chemistry - Three part question Two students each measured the density of a ...
Math - Solve each of these systems using the substitution method. Make sure to ...
elementary stats - On a multiple choice test with 11 questions, each question ...
Math (URGENT) - Use calculator - answer correct to 3 places. a. 3sqrt17 + ...

Search
Members