1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Doss [256]
3 years ago
12

10.0 g of calcium carbonate was heated. The mass of calcium oxide left was 5.6 g. Calculate the mass of

Chemistry
2 answers:
timama [110]3 years ago
8 0

Answer:

4.4g

Explanation:

Calculate the molar mass of CaCO3

40+12+(16×3)

40+12+48

100 g/mol

Calculate the molar mass of CO2

12+(16×2)

12+32

44g/mol

100g of CaCO3=44g of CO2

10g of CaCO3=10×44/100

g of CO2=440/100

=4.4g of CO2

Kipish [7]3 years ago
4 0

Answer:

4.4g

Explanation:

Mass of CaCO3 = 10g

Mass of CaO = 5.6g

Mass of CO2 =?

Mass of CaCO3 = Mass of CaO + Mass of CO2

Mass of CO2 = Mass of CaCO3 — Mass of CaO

Mass of CO2 = 10 — 5.6

Mass of CO2 = 4.4g

You might be interested in
How can you get pure water from impure water ? Explain with Experiment ​
crimeas [40]

Answer:

Boil it.

Explanation:

If you mean how to clean water to sanitize it you have to boil it.

3 0
3 years ago
The concentration of CI ion in a sample of H,0 is 15.0 ppm. What mass of CI ion is present in 240.0 mL of H,0, which has a densi
Doss [256]

Answer:

Mass of solute = 0.0036 g

Explanation:

Given data:

Concentration of Cl⁻ = 15.0 ppm

Volume of water = 240 mL

Mass of Cl⁻ present = ?

Solution:

1 mL = 1 g

240 mL = 240 g

Formula:

ppm = mass of solute / mass of sample ×1,000,000

by putting values,

15.0 ppm = (mass of solute / 240 g) ×1,000,000

Mass of solute = 15.0 ppm ×  240 g / 1,000,000

Mass of solute = 0.0036 g

8 0
3 years ago
A hot air balloon is filled to 1250 m3 at 27 C. At what temperature will the balloon be filled to 1600 m3 if the pressure remain
SSSSS [86.1K]

Answer:

384.2 K

Explanation:

First we convert 27 °C to K:

  • 27 °C + 273.16 = 300.16 K

With the absolute temperature we can use <em>Charles' law </em>to solve this problem. This law states that at constant pressure:

  • T₁V₂=T₂V₁

Where in this case:

  • T₁ = 300.16 K
  • V₂ = 1600 m³
  • T₂ = ?
  • V₁ = 1250 m³

We input the data:

300.16 K * 1600 m³ = T₂ * 1250 m³

And solve for T₂:

T₂ = 384.2 K

7 0
3 years ago
Carbon-14 has a half-life of 5720 years and this is a fast-order reaction. If a piece of wood has converted 75 % of the carbon-1
Nana76 [90]

Answer:

11445.8years

Explanation:

Half-life of carbon-14 = 5720 years

First we have to calculate the rate constant, we use the formula :

7 0
3 years ago
Question 3 of 10
ikadub [295]

Answer:

salt water 97%

fresh water 1%

frozen 2%

Explanation:

8 0
3 years ago
Other questions:
  • What is the 3rd noble gas
    7·1 answer
  • A system was prepared with NH3 = O2 = 3.60 M as the only components initially. At equilibrium N2O4 is 0.60M. Calculate the value
    13·1 answer
  • Turgor, an internal stimulus, refers to —
    7·1 answer
  • Is a theory testable, yes or no?
    5·1 answer
  • In the electron cloud model, the electron cloud is denser in some locations than in others. What do the denser areas represent?
    6·2 answers
  • 7. The root structures on peanut plants that restore soil nutrients and fix nitrogen​
    8·1 answer
  • 6CO2 + 6H2O → C8H12O6 + 602
    5·1 answer
  • Name the following alkyne.<br> Please help me &lt;3
    12·1 answer
  • The human body is about 9.5% carbon atoms, with a small fraction of that carbon being radioactive carbon-14. Carbon dating is a
    8·1 answer
  • You measure the absorbance of your extracted curcumin solution and realize that the solution is too concentrated. What made you
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!