Mass (sample + glass) Observations Classification Hygroscopic, Deliquescent, Efflorescent, or None Initial Final Initial Final Na,CO, · 10H,O 31.209g 31.186 g white white Efflorescent * ony stal Cnystal fine 52.8849 wnite White KAI(SO), 12H,O 52.880 Hygro supic * crysteals crystals CaCl, white 31.782 g 32.320g pelets waeny Solid Deliquescent A☆ reddish reddish puple powder 89.362 g 84.360g palape Hygrosupic CoCl,-6H,0

Q: Here are the four sketches os pure substances.each sketch is drawn as if a sample of rhe substance…

A: Given diagram is :  There are the four sketches of pure substances .each sketch is drawn as if a…

Q: Thallium (Tl) has an average atomic mass of 204.4 amu. If thallium-203 has an atomic mass of 202.972…

A: Given : Average atomic mass of Tl = 204.4 amu Atomic mass of Tl-203 = 202.972 amu Abundance of…

Q: preted by a chemical ra(n) _compound always combine in proportions. A(n) mixture is made of two or…

A: The solution of the given problem is as given below:

Q: B. Calculate the following information. USE THE FACTOR-LABEL METHOD TO DO YOUR CALCULATIONS!!! 1. A…

A: The density of a solution is calculated by the formula: Density=MassVolume   Note: Since you have…

Q: A volatile liquid (one that easily evaporates) is put into a jar, and the jar is then sealed. Does…

A: Law of conservation of mass: According to the law of conservation of mass, for a closed system to…

Q: Victoria carried out the experiment and added 1.9487 g zinc and 1.9371 g iodine to a flask. After…

A: Total mass of Zinc = 1.9487 gTotal mass of iodine = 1.9371 gmass of zinc iodide recovered = 2.3284…

Q: An irregular sample of zinc has a mass of 23.21 g. This sample is carefully placed in a graduated…

A: Given data : Mass of zinc (mZn)= 23.21 g The initial volume of water (Vw)= 18.75 mL Density of zinc…

Q: Read the descriptions below of two substances and an experiment on each. Decide whether the result…

A: Given Data:Sample A is 100. g of a coarse grey powder with a faint unpleasant smell. 15. mg of the…

Q: Make a graph of the average mass vs. year. Make sure axes are labeled.

A:

Q: Which of the following statements is TRUE? O A scientific law is fact. Once a theory is constructed,…

A: A. A scientific law summarizes a series of related observation and is generally considered a fact.…

Q: Answers will vary depending on your particular sample. Keeping in mind that the SI unit for mass is…

A: To give: An approximate mass of a grain of sand.

Q: Add mathematical symbols (+, -, *, /, v, !, etc.) to make the following expressions true. For…

A:

Q: The terms concentrated and dilute are quantitative. TRUE or FLASE

A: Chemical analysis can be divided into two types:Quantitative analysis: It determines the amount of…

Q: You made a 36.6 g sample of a compound made of carbon and oxygen. You know that 10.0 g of carbon…

A: Number of moles = Mass/Molar mass

Q: 63. Apply Graph mass versus volume for the data given in the table. What is the slope of the line?…

A: Given,Volume cm3 : 7.5 , 12 , 15 , 22Mass g : 24.1 , 38.5 , 48.0 , 70.1Required,…

Q: Based on the evidence, write a scientific description of the energy transformation that occurs…

A: You have written it so well.  You can also add that this gas includes methane i.e. CH4 majorly.

Q: I am extremely bad at math and I need help understanding how to do unit conversions. I have these…

A: Thank you for the question. We’ll answer the first question since the exact one wasn’t specified.…

Q: The planet Mars orbits 2.279 x 10¹¹ m from the Sun. Express the distance using the appropriate…

A: 1m = 10-3 mm1 km = 1000 m1 nm = 10-9 m1 Gm = 109 m

Q: Chapter 1 em 13 13 Part D A pound of coffee beans yields 60 cups of coffee (4 cups = 1 qt). How many…

A: Given that one pound of coffee beans yields 60 cups of coffee.  The conversion of pound to gram…

Q: Classify the substance shown in the sketch below. You can click the other tabs in the sketch to get…

A: In chemistry, compounds are classified as solid, liquid, or gas based on their physical and chemical…

Q: Br H₂C-CH₂ SPECIAL The name of compound C is: VI 3 IV H M FC # 22 CH3 GREEK ALPHABET CH3 8 X . F O 8…

A: We need provide the IUPAC name for the given organic molecule.

Q: Highlight the five significant contributions of Robert Boyle, Antoine Lavoisier, and John Dalton to…

A: Robert Boyle was born on 1 Jan 1627. He was a scientist with outstanding experimental skills. He was…

Q: An FM radio station has a wavelength of 1.847 m1.847 m. Convert this length to feet. How many…

A:

Q: Vhich statement about pure substances and molecules is correct? Molecules cannot be pure substances.…

A: molecules are made up of two or more atoms combining in a specific ratio. Pure substances are those…

Q: Which is an example of a physical change?

A: Physical change can be defined as the change in the physical form of the substance without any…

Q: Classify each statement as an observation, a law, or a theory. Chlorine is a highly reactive gas.

A: A series of similar respective observations leads to the development of a scientific law. A theory…

Q: Describe the difference between accuracy and precision. How do we determine accuracy and precision?

A: Accuracy is the measure of closer agreement between true value or accepted value and  specific…

Q: I am told that when determining the number of significant figures, if the decimal place is absent,…

A: Rules for Determination of Significant Figures:[i] All non-zero digits are significant.For example:…

Q: B C D E total mass total volume of water in the beaker (ml) 10.05 10.05 20.05 20.05 30.05 30.05 11…

A:

Q: Tracy is receiving lanoxin every 8 hours. She weighs 63 kg. The dose range for this drug is 0.030 to…

A: Given weight of Tracy is 63 kg.  Dose range of lanoxin is 0.030 to 0.060 mg/kg every day. The…

Q: You are supplied with another cylinder made of the same material. If the cylinder length is 1.83…

A: Density  of cylinder  is calculated  by dividing  mass with volumes.

Q: True or False? * Qualitative and quantitative data gathered via laboratory experiments is one of…

A: Qualitative data is not numerical, it is descriptive. Quantitative data gives a numerical value,…

Q: The accepted density of Manning is 18.00g/mL. Your lab team measures the density of Manning to be…

A:

Q: In the table below you will find three descriptions of scientists engaging in activities that are…

A:

Q: |Explore LESSON Name 70 Spare Change Date. Period Physical Versus Chemical Change DEMO Purpose To…

A: The first column is:

Q: 1. 23.78 hg = kg %3| 2. 3423 L= cL 3. 9.643 Mm = m

A:

Q: See the following table of concentration, green intensity, blank. Based on these data, convert…

A: Using Excel:Let me know if you have additional queries. Happy learning!

Q: Calculate the length (in m) of a rectangular solid that weighs 95.5 g and  has a width of 2.50 cm…

A:

Q: If an idea cannot be disproven by some possible observation or test, can such an idea be supported…

A: In practice, science does not always prove phenomena, but it seeks to eliminate the explanations…

Q: (p) heterochain polymer (q) homochain polymer (r) homopolymer (s) hyperbranched polymer (t) ladder…

A: A polymer is a large molecule composed of repeating units called monomers. The monomers are bonded…

Q: The mass of an unidentified rock is 15.5 grams. Students determine the volume of the rock by placing…

A: Tables -   Rock                 Density Range (g/cm3)  Coal.                    1.1 - 1.4…

Q: Which of the following statements is INCORRECT? O Filtration banks on the different sizes of mixture…

A: Filtration , distillation and chromatography are separation techniques.

Q: Classify each statement as an observation, a law, or a theory. Neon is an inert (or nonreactive)…

A: An atom is the basic and fundamental unit of matter. An atom consists of electron and the nucleus in…

Q: Complete the following table. Be sure each of your answer entries has the correct number of…

A: We have to calculate the values in each unit i.e. in cal, kcal and in kJ.

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.