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 86 times)

codyclark

  • Hero Member
  • *****
  • Posts: 538
on: Feb 15, 2020

Question 1

A sample of pure lithium carbonate contains 18.8% lithium by mass. What is the % lithium by mass in a sample of pure lithium carbonate that has twice the mass of the first sample?
◦ 18.8%
◦ 75.2%
◦ 37.6%
◦ 9.40%

Question 2

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 45.0 g of calcium fluoride?
◦ 2.56 g
◦ 7.70 g
◦ 23.1 g
◦ 15.0 g
Chemistry ¦ McMurry, Fay, Robinson ¦ 7th Edition
Buy Test-Bank


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by codyclark on Feb 15, 2020

mbcrismon

  • Sr. Member
  • ****
  • Posts: 328
Reply #1 on: Feb 15, 2020
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
Answer Preview
Only 25% of students answer this correctly


codyclark

  • Member
  • Posts: 538
Reply 2 on: Feb 15, 2020
Great answer, keep it coming :)

essyface1

  • Member
  • Posts: 347
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.

Did you know?

Stevens-Johnson syndrome and Toxic Epidermal Necrolysis syndrome are life-threatening reactions that can result in death. Complications include permanent blindness, dry-eye syndrome, lung damage, photophobia, asthma, chronic obstructive pulmonary disease, permanent loss of nail beds, scarring of mucous membranes, arthritis, and chronic fatigue syndrome. Many patients' pores scar shut, causing them to retain heat.

Did you know?

An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.

Did you know?

Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.

Did you know?

Fewer than 10% of babies are born on their exact due dates, 50% are born within 1 week of the due date, and 90% are born within 2 weeks of the date.

Role of calcium, tropomyosin, and troponin in cross-bridge cycling. Role of calcium, tropomyosin, and troponin in cross-bridge cycling.
Calcium Carbonate, an Important Carbon Sink Calcium Carbonate, an Important Carbon Sink
Sample Diet for a College-Aged Female Weighing 132 Pounds, Assuming Light to Moderate Daily ... Sample Diet for a College-Aged Female Weighing 132 Pounds, Assuming Light to Moderate Daily ...
A sample flow sheet. A sample flow sheet.
How to find the average atomic mass of an element How to find the average atomic mass of an element
Mass Wasting Forms Mass Wasting Forms
Video: Interview with an Anorexic Woman (Part 1 of 2)

For a complete list of videos, visit our video library