This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A sample of pure calcium fluoride with a mass of 15.0 g contains 7.70 g of calcium. How much calcium ... (Read 76 times)

s.tung

  • Hero Member
  • *****
  • Posts: 577
on: Aug 27, 2018
A sample of pure calcium fluoride with a mass of 15.0 g contains 7.70 g of calcium. How much calcium is contained in 40.0 g of calcium fluoride?
 
  A) 2.27 g
  B) 7.70 g
  C) 15.0 g
  D) 20.5 g

Question 2

Of the following, which atom has the smallest atomic radius?
 
  A) K
  B) As
  C) Rb
  D) Sb


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

pratush dev

  • Sr. Member
  • ****
  • Posts: 321
Reply #1 on: Aug 27, 2018
Answer to Question 1

D

Answer to Question 2

B


s.tung

  • Member
  • Posts: 577
Reply 2 on: Aug 27, 2018
:D TYSM

meganmoser117

  • Member
  • Posts: 303
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

To combat osteoporosis, changes in lifestyle and diet are recommended. At-risk patients should include 1,200 to 1,500 mg of calcium daily either via dietary means or with supplements.

Did you know?

Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.

Did you know?

Only one in 10 cancer deaths is caused by the primary tumor. The vast majority of cancer mortality is caused by cells breaking away from the main tumor and metastasizing to other parts of the body, such as the brain, bones, or liver.

Did you know?

Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.

Did you know?

ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.

Pure Alexia in a Patient with Multiple Sclerosis Pure Alexia in a Patient with Multiple Sclerosis
Sample Program for Changing Daily Caloric Intake (cont.) Sample Program for Changing Daily Caloric Intake (cont.)
Sample prescriptions of antibiotics for dental infections. Sample prescriptions of antibiotics for dental infections.
Sample of a weekly bookkeeping ledger. Sample of a weekly bookkeeping ledger.
Suppose that we have a sample space with five equally likely experimental outcomes: E1, E2, E3, ... Suppose that we have a sample space with five equally likely experimental outcomes: E1, E2, E3, ...
A 23 kg mass is connected to a nail on a frictionless table by a massless string 1.3 m long. ... A 23 kg mass is connected to a nail on a frictionless table by a massless string 1.3 m long. ...
Video: The pH scale - Strong acids and Weak acids

For a complete list of videos, visit our video library