Chemistry, 21.10.2020 16:01 scottytohotty

You are given an unknown mixture containing NaCl and NaHCO3. When you carry out the heating exactly as described in part A, only NaHCO3 decomposes. From the loss in mass, you can calculate the amount of NaHCO3 present in the mixture and its mass percent composition. Here is your data. Incorporate it in your written procedure.

Experimental data Unknown (NaCl + NaHCO3)
Mass of crucible + cover 72.428 g
Mass of crucible + cover + mixture 74.80 g
Mass of crucible + cover + residue (1st heating) 74.25 g
Mass of crucible + cover + residue (2nd heating) 74.24 g
Mass of crucible + cover + residue (3rd heating) 74.24

From the data above, carry out your calculation for finding the mass of mixture, and mass of final solid remaining in the crucible. Using the knowledge that only loss of mass due to CO2 and H2O can be linked to the original mass of NaHCO3, calculate the mass of NaHCO3 and percent of NaHCO3 in the mixture.

Answers: 3

Show answers

Another question on Chemistry

Chemistry, 22.06.2019 00:40

Base your answer on the information below and on your knowledge of chemistry. nitrogen dioxide, no2, is a dark brown gas that is used to make nitric acid and to bleach flour. nitrogen dioxide has a boiling point of 294 k at 101.3 kpa. in a rigid cylinder with a movable piston, nitrogen dioxide can be in equilibrium with colorless dinitrogen tetroxide, n2o4. this equilibrium is represented by the equation below. 2no2(g) n2o4(g) + 58kj at standard pressure, compare the strength of intermolecular forces in no2(g) to the strength of intermolecular forces in n2(g).

Answers: 2

Answer

Chemistry, 22.06.2019 06:30

Use examples from the article to explain one positive and one negative effect that chemistry has had on society.

Answers: 2

Answer

Chemistry, 22.06.2019 10:10

How do you identify the anode on a power source such as a battery? how do you identify the cathode? how are terms anion and cation?

Answers: 1

Answer

Chemistry, 22.06.2019 18:30

Read the claim. breakfast is an important meal. it jump starts the body’s process of using calories to break down food. appetite can decrease with age, but going too long without eating causes metabolism to slow down. current research shows that incorporating legumes such as lentils and chickpeas into meals boosts metabolism for twenty-four hours. who might benefit from this claim? people who have a fast metabolism stores that sell exercise equipment people who take vitamin supplements grocery stores that sell legumes

Answers: 1

Answer

You know the right answer?

You are given an unknown mixture containing NaCl and NaHCO3. When you carry out the heating exactly...

Questions