Questions LLC
Login
or
Sign Up
Ask a New Question
Science
Chemistry
Measurement
A chemist needs to know the mass of mgc12 a sample of to significant digits. She puts the sample on a digital scale. This is what the scale shows: 0.47.089 g. If this measurement is precise enough for the chemist, round it to 4 significant digits
1 answer
The measurement 0.47.089 g should be rounded to 0.470 g (4 significant digits).
You can
ask a new question
or
answer this question
.
Related Questions
Use the table of molar masses to complete the activity.
Element Molar Mass(g/mol) Carbon 12.01 Hydrogen 1.01 Oxygen 16.00 A
Two chemists measure the densities of an unknown metal sample. They both find that the sample has a density of 8.94 g/mL.
A chemist wants to prepare a stock solution of H2SO4 so that a sample of 20.00mL will produce a solution with a concentration of
A chemist determined by measurements that
0.0850 moles of mercury participated in a chemical reaction. Calculate the mass of
4. A square has a side of 6.25 feet. What is the area in square feet? Round to the correct significant digits.
Answer: 6.25 feet
Sometimes, instead of percentages compostion, you will have the composition of a sample by mass. Using the actual mass of the
An oxygen atom has a mass of 2.66*10 to power of-23g and a glass of water has a mass of 0.050kg use this information to answer
A chemist wants to make 5.5 L of a 0.250 M CaCl2 solution, what mass of CaCl2 (in g) should the chemist use?
A security code used to consist of two odd digits, followed by four even digits. To allow more codes to be generated, a new
The difference samples A and B of Zinc oxide we're obtained from different sources when heated in a stream of hydrogen they were