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A piece of chalk (CaCO3)

A piece of chalk (CaCO3) has an initial mass of 43.5 grams. The massof the chalk decreased to 39.6 grams after it was used.
1. 1 answer
2. 119 views
You want to measure the CaCo3 contents in chalk. To this end, you grind a piece of chalk, dissolve the slurry to make 10ml of
1. 4 answers
2. asked by Anonymous
3. 798 views
A piece of chalk (CaCO3) has an initial mass of 43.5 grams. The massof the chalk decreased to 39.6 grams after it was used.
1. 1 answer
2. 127 views
Can't you have the structure "have someone do something" in American English?Thank you very much, Writeacher. I had her get a
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2. asked by Mike
3. 455 views
Given the reaction 2HI (aq) + CaCO3(s) = CaI2(aq)+CO2(g)+H2O(l) What volume of of CO2 can be produced from 255mL of 3.0M HI and
1. 2 answers
2. asked by Kevin
3. 1,595 views
How many milliliters of 0.418 M HCl are needed to react with 52.7 g of CaCO3?2HCl (aq) + CaCO3 (s) >>> CaCl2 (aq) + CO2 (g) +
1. 1 answer
2. asked by Some kid
3. 855 views
What is the scientif formula for chalk?It is mainly calcium carbonate, CaCO3 It's mainly calcium carbonate,(CaCO3)
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2. asked by Gina
3. 594 views
The equilibrium constant, Kc for the system,CaO(s) + CO2(g) == CaCO3(s), is A. Kc = (CaO) (CO2) / (CaCO3) B. Kc = (CO2) C. Kc =
1. 2 answers
2. asked by Hannah
3. 2,603 views
For the following equilibrium system, which of the changes will form more CaCO3 (more moles CaCO3)?CO2 + Ca(OH)2=CaCO3 +H2O
1. 1 answer
2. asked by Akira12
3. 1,196 views
please check:1. A piece of chalk is dropped by a teacher walking at a speed of 1.5 m/s. From the teacher's perspective, the
1. 1 answer
2. asked by y912f
3. 3,179 views