Analysis of an ore of calcium shows that it contains 13.61 g calcium and 21.77 g oxygen in a 46.28-g sample. Calculate the percent composition of this compound.

Answers

Answer 1

Answer:

29.41% of Calcium and 47.04% of Oxygen

Explanation:

The percent composition of an atom in a molecule is defined as 100 times the ratio between the mass of the atom and the mass of the molecule.

The mass of the molecule of the problem (Ore) is 46.28g. That means the percent composition of Calcium is:

13.61g / 46.28g * 100 = 29.41% of Calcium

And percent composition of Oxygen is:

21.77g / 46.28g * 100 = 47.04% of Oxygen

Related Questions

The number of joules required to heat one gram of a substance one degree Celsius is _____.

endothermic

temperature

exothermic

specific heat capacity

Answers

The answer is D - specific heat capacity.

A sample of gas has a volume of 20 cm³.The pressure is changed to 90 kPa at constant temperature,while the volume increases to 75 cm³.What was the original pressure of the gas?

Answers

Answer:

337.5kPa ~ 338kPa

Explanation:

Using the ideal gas law PV=nRT we have the following definitions from the problem:

V(initial) = 20cm³

P(initial) = ?kPa

V(final) = 75cm³

P(final) = 90kPa

Since we know that the number of moles of the sample did not change, nor did the temperature, nor does the ideal gas constant (R) we can rewrite this equation to state:

P(initial)V(initial) = nRT =P(final)V(final) ~ P(initial)V(initial) = P(final)V(final)

Rearranging this equation as we are solving for the initial pressure we find that:

P(initial) = (P(final)V(final))/V(initial)

P(initial) = ((90kPa)(75cm³))/20cm³

P(initial) = 337.5kPa ~ 338kPA

In a hospital, bags of saline solution are used to rehydrate patients. They are made by dissolving a specific amount of salt in water. What is the solvent in the saline solution?

A. Bag
B. Patient
C. Saline
D. Water

Answers

D. Water

The solvent is the liquid that the solute (salt) is dissolved in.

Water is the solvent in the saline solution. Hence, option D is correct.

What is the solute?

A solute is something being dissolved, a solvent is a thing dissolving the item, and the solution is the mixture of the two items.

In a hospital, bags of saline solution are used to rehydrate patients. They are made by dissolving a specific amount of salt in water. Water is the solvent in the saline solution.

Hence, option D is correct.

Learn more about the solution here:

https://brainly.com/question/7932885

#SPJ5

PLZ HELP ME Which of the following is the process by which chloroplasts use carbon dioxide, water, and sunlight to produce sugars and oxygen?
A. Photosynthesis
B. Cellular respiration
c. Reproduction
D. Homeostasis

Answers

Answer:

Explanation:

The answer is Photosynthesis

What is the chemical formula for carbon tetrafluoride?
The Periodic Table
1
mono-
2
di-
3
4
tetra-
5
penta-
hexa-
6
7
hepta-
8
Oct-
9
nano-
10
deca-

Answers

the chemical formula for carbon tetrafluoride is CF4 because carbon has a charge of -4 and fluorine has a charge of -1 so to balance the ions, you must balance the charges.

Using your answers from part C, complete the chemical formula of each compound. If the number of ions is 1, leave that
number out of the formula.
Drag each number to the correct location. Numbers may be used more than once

Answers

Answer:

1;1, 2;1, 3;1, 1;2, 1;1, 3;2, 1;3, 2;3, 1;1.

I hope this will help.

Answer:

This is what the answer looks like

Explanation:

Answers

Answer:

C 760 mm of hg

because this is the atmospheric pressure at sea level

what is the most appropriate unit to measure the following; the length of a football field. b) the diameter of a tennis ball

Answers

Explanation:

a) m (metre)

b) mm (millimeter)

Write the relation of M3 with its multiples

Answers

Explanation:

HI friends good morning

Other Questions

What is the emotion that comes through a non-fiction work called?A. RhetoricB. Evidencec. PurposeD. Tone 8. I wouldnt _____ going to the beach on the weekend.A. mind B. matter C. care D. want A game involves correctly choosing the 5 correct numbers from 1 through 18 that are randomly drawn. What is the probability that a person wins the game, if they enter a) once? b) 7 times with a different choice each time? Children depend on adult to help develop their self conscious emotions McKean Corporation authorized 500,000 shares of common stock in its articles of incorporation. On May 1, 2019, 100,000 shares were sold to the company's founders. However, on October 15, 2019, McKean repurchased 20,000 shares to settle a dispute among the founders. At this date, how many shares were issued and outstanding, respectively? What is the Constant of which bait works best for a fly trap? Match the answers.. NO LINKS OR ANSWERING QUESTIONS YOU DON'T KNOW!!!Chapter 11 part 2:What are three different properties of logarithmic functions when encountering the operations of addition, subtraction, and multiplication? Provide an example of each. About a Month And A Half I Got A 10x & 25x Aquarium I Had 9 Fish And Betta Pebbles And In Less Than a Week 1 to 2 Fish Die A Day And I Believe Its The Betta Rocks Because The Rock Package Says Medicine For Bettas But Lethal To Fish, Bc There's Medicine In The Rocks That Affect The Water And It Helps Betta Fish But Lethal To Other Fishes.I Have 2 Turtles And Almost a Month There Living In Betta Rocks And There OK. Im new to this app and I need help with those two questions please help!! Algebra II Part 1Choose the expression or equation that correctly represents this informationRose works eight hours a day for five days a week. How many hours will she work in saweeks?hours = 40 = 6hours = 40.6hours = 6 = 40 Write down at least five number pairs to solve the equation vw = 50 Sybil, age 40, is single and supports her dependent parents who live with her, as well as her grandfather who is in a nursing home. She has AGI of $80,000 and itemized deductions of $8,000. What is the taxable income? How does Douglas is cultural point of you as slavery from the early 1800s shape as motivation to become literate, yet also create obstacles for him? provide at least two examples from the text right at least a 100 word response Read the article Skara Brae: Skara Brae is one of the oldest historical sites in Europe, and it stayed hidden for more than 4,000 years. The ancient village of Skara Brae was discovered on the main island of Orkney, in Scotland. A massive storm in 1850 removed the sand that had covered it for thousands of years, exposing the remains of a small village. Skara Brae is a collection of eight round, stone houses that still have their stone furnishings and even some of the belongings of the inhabitants. The contents can tell us a great deal about how people lived in what is called the Neolithic era, or the last period of the Stone Age. Seven of the eight houses appear to have been family homes, with beds, dressers, fireplaces, and even simple toilets. The eighth house may have been a community workshop. It shows evidence of tool-making and the use of a large fire pit. How was Skara Brae built, and what, eventually, happened to it The following data relate to direct materials for the month for the Hodge Wax Company: The standard costs for the work done was 5,900 pounds of wax at $9.50 per pound. The actual costs were 6,300 pounds at $9 per pound. What is the direct materials efficiency variance What role has the Supreme Court played in expanding rights for LGBTAmericans in the 21st century? A. The Supreme Court has ruled that churches must recognize same-sex marriage.B. The Supreme Court has struck down state and federal lawsbanning same-sex marriage.O C. The Supreme Court has ruled that a transgender woman must beemployed as a cabinet adviser.D. The Supreme Court has determined that gay pride parades mustbe held in all major cities. After running 3/4 of a mile tess has only run 1/3 how long is the race in miles but I want to know how you did it if f(x) = 2x+2x-1, g(x) = x+5x+2 f(x)=g(x), find the value of x Describe the different hypothesis (Nebular Hypothesis, Planetesimal Theory, and Tindal Theory) explaining the origin of solar system.