![statonglenda](/avatars/292.jpg)
statonglenda
10.10.2019 •
Chemistry
You put a sample of aluminum on a hot plate. what would you expect to happen to it’s density? it would
Solved
Show answers
More tips
- B Business and Finance How to Open an Online Store? A Detailed Guide for Beginners...
- L Leisure and Entertainment What can be considered an antique: defining and valuing old objects...
- L Leisure and Entertainment Choosing the Right Books to Read: Tips and Recommendations...
- C Computers and Internet Step-by-Step Guide on How to Download Music to Your iPhone...
- H Health and Medicine Naskol ko Opasen Ukus Kleshcha i Kak Ego Raspoznat...
- F Family and Home How to Choose Suitable Windows for Your Home?...
- L Leisure and Entertainment What Movies You Should Watch: A Guideline to Make the Right Decision...
- L Leisure and Entertainment How to Identify a Song? Which Program Can Recognize a Song by Its Melody?...
- H Health and Medicine Coughing: Causes, Types, and Treatment Methods...
- F Family and Home Parquet or laminate, which is better?...
Answers on questions: Chemistry
- C Chemistry Statement explains how the band and the crystal of a metal are like atomic orbitalthey both have localized electrons that orbit specific atomsthey both involve ionization...
- C Chemistry Select the three characteristics that best describe a stem-educated student. innovative understanding curious traditional logical dependent...
- C Chemistry A62.6-gram piece of heated limestone is placed into 75.0 grams of water at 23.1°c. the limestone and the water come to a final temperature of 51.9°c. the specific heat...
- C Chemistry Acopper coin with a mass of 6.30 grams changes temperature in the sunshine from 20.0°c to 32.0°c. how much energy is transferred? the specific heat capacity of copper...
- C Chemistry Electrons in atoms exist in particular energy level. A ___ must be emitted or absorbed to move between energy levels....
- C Chemistry I m counting on you guys, this my last chance, give a hand and I give you a good brainliest and 40 points... Promise. 2. Indicate the number of molecules in: a. 0.5 moles...
- M Mathematics Evaluate the function f(x)=2x-5 and simplify ! math 3 10 points needed !...
- M Mathematics Carlos is arranging stuffed animals on shelves. he has 24 bears and 16 tigers. each shelf will have the same number of bears and tigers. what is the greatest number of...
- H History All central america countries have which of the following features in common...
- M Mathematics When the value of x increases by 5, the value of f(x) decreases by 20. for which function is this true?...
Ответ:
The mass of calcium carbonate that is needed to produce 47.0 l of Co2 at STP is 209.8 grams
calculation
CaCO₃ (s) → CaO(s) +Co₂
calculate the moles CO2 at STP
AT STP 1 mole of gas = 22.4 L
? moles = 47.0 L
by cross multiplication
=[ (1 moles x 47.0 l) / 22.4 L] =2.098 moles
use of mole ratio to calculate the moles of CaCO₃
CaCo₃:Co₂ is 1:1 therefore the moles of CaCo₃ is also = 2.098 moles
mass = moles x molar mass
The molar mass of CaCo₃ = 40 +12 +(16 x3) =100 g/mol
mass =2.098 moles x 100 g/mol =209.8 grams