menu
bartleby
search
close search
Hit Return to see all results

1) When the sample is first put into the crucible and heated, the directions say to heat gently for the first five minutes. why do you suppose this is important?  2) Suppose that some of the compounds spilled out of the crucible after it was heated. Would that cause the percent by mass of water in the compound determined by the experiment to be too low, too high, or unchanged? Briefly explain your answer.  3) The unknown compounds used in this experiment are the following compounds. Based on your experimental results, what is the identity of the unknown compound you used? Show all calculations needed.Compound: CaSO4. 2H2O, MgSO4.7H2O, BaCl2.2H2O, ZnSO4.7H2O

Question

1) When the sample is first put into the crucible and heated, the directions say to heat gently for the first five minutes. why do you suppose this is important?

 

 

2) Suppose that some of the compounds spilled out of the crucible after it was heated. Would that cause the percent by mass of water in the compound determined by the experiment to be too low, too high, or unchanged? Briefly explain your answer.

 

 

3) The unknown compounds used in this experiment are the following compounds. Based on your experimental results, what is the identity of the unknown compound you used? Show all calculations needed.

Compound: CaSO4. 2H2O, MgSO4.7H2O, BaCl2.2H2O, ZnSO4.7H2O

check_circleAnswer
Step 1

We are authorized to answer one question at a time, since you have not mentioned which question you are looking for, so we are answering the first one, please repost your question separately for the remaining questions.

Step 2
Crucible is composed of cexamic matenial It is
led to melt a substane or sulbjected
a substaue
vey igh tewperatire
at
help_outline

Image Transcriptionclose

Crucible is composed of cexamic matenial It is led to melt a substane or sulbjected a substaue vey igh tewperatire at

fullscreen

Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Our solutions are written by experts, many with advanced degrees, and available 24/7

See Solution
Tagged in

Science

Chemistry

Related Chemistry Q&A

Find answers to questions asked by student like you

Show more Q&A add
question_answer

Q: Tin, element 50 on the periodic table, has 10 stable isotopes. 117^Sn makes up 7.687% of naturally o...

A: Using the formula moles of Sn117 is calculated as,

question_answer

Q: Write the correct number if significant figures for the following numbers a. 2 816.0014    b. 0.0012...

A: (a) The number of significant figures in 2816.0014 are eight.All non-zero digits are significant.The...

question_answer

Q: What is the volume of a box in cm^3 if its dimensions are 7 inches x 7.7 inches x 10.7 inches? 1 inc...

A: Given dimensions has to be converted from inches to cm.

question_answer

Q: the recommended adult dose of elixophyllin, a drug used to treat asthma, is 6.0 mg/kg of body mass. ...

A: The given weight of a person in pounds is converted into kilograms.

question_answer

Q: Osmium (Os) is the densest element known (density = 22.57 g/cm3). Calculate the mass in pounds and i...

A: Volume of Os sphere can be calculated as given below:

question_answer

Q: The wavefunction of a particle is given by the following function wavefunction = Acos(kx)+Bsin(kx) I...

A: The wave function of a particle is given by the followingWave function (ᴪ) = Acos(kx)+Bsin(kx)If V(x...

question_answer

Q: 7. Calculate the mass of KI in grams required to prepare 5.00 × 102 mL of a 2.80 M solution.

A: Click to see the answer

question_answer

Q: 10.4% C, 27.8% S, and 61.7% Cl Express your answer as a chemical formula.

A: The empirical formula is the chemical formula of any compound that represents the proportions of eac...

question_answer

Q: Lithium is the least dense metal known (density=0.534 g/cm3).  What is the volume occupied by 1.60 *...

A: Given,Mass of the lithium = 1.60×103 gDensity = 0.534 g/cm3

Sorry about that. What wasn’t helpful?