1. 1. Constants such as boiling point and freezing point are intensive and extensive properties. Can you think of intensive characteristics or values that best describes your family those that are constant or unchangeable? 2.

Q: Classify these substances. More than one answer may apply in each case. N2 solution O homogeneous…

A: Element - It is a pure substance made up of only a single atom.  Compound - It is a pure substance…

Q: A homogeneous mixture is made by dissolving 4.23 grams of solid potassium cyanide in 1000 g of…

A: It is given- 4.23 grams of Potassium cyanide is added to 1000g of water and it makes a homogeneous…

Q: how would you seperate a homogeneous solution of table salt and water into its components?

A: Evaporation: It is the process, which involves transformation of liquid water to water vapour.

Q: Using the Identification of Substances by Physical Properties table in the question above, when…

A: The answer is explained below.

Q: Safety: While these are household items that you could easily purchase at the store, please…

A: #Q.1:  Your calculation for #Q.1 is correct which is 7.95 g

Q: When measuring water or water-based liquids in a graduated cylinder or other liquid measuring…

A: This due to the surface tension, cohesive force and adhesive force. Surface tension is the tendency…

Q: 4. What is a characteristic property of a pure substance? Is the boiling point of a substance a…

A: Pure substances are substances that are made up of only one kind of particles and has a fixed or…

Q: 14. A researcher finds that a solid has high melting and boiling points, and is soluble in water.…

A: Ionic compound is a chemical compound composed of ions held together by electrostatic forces termed…

Q: Circle any of the following that are most likely a pure substances? A) T-shirt C) air E) tap water…

A: Pure substance: A pure substance (element or compound) always has a definite composition by mass.…

Q: At the pool supply store when you buy chlorine it is like tablets/or pebbles you mix with the pool…

A: Chlorine is the main chemical which is used in swimming pools for sterilizing the water and  keep it…

Q: In the lab, you make a single measurement and find the density of methanol to be 0.7 g/mL. The true…

A: Given:-density of methanol(measured value)=0.7 g/mL true value for the density of methanol=0.7 g/mL

Q: Suppose that a student is testing a water sample for hardness, but has found that the sample is so…

A: The hardness of water is measured by spectrophotometric techniques. Hardness in water is due to the…

Q: What is it called when water goes from a liquid to to a solid? From a solid to a liquid? From a…

A: To solve this problem we have to know about phase Change of water.

Q: Which of the following is a pure substance that can be broken down into simpler substances by…

A: Solution: It is a homogeneous mixture of two or more components that are uniformly distributed…

Q: Gasoline is composed of a variety of different liquid hydrocarbons, which do not separate as time…

A: Gasoline is composed of a variety of different liquid hydrocarbons. These hydrocarbon does not…

Q: How many water particles surround a calcium ion? I’m trying to draw a particle representation of…

A: Calcium ion Ca2+ mostly shows co-ordination number of 6 , 7 , 8 . 80% of calcium co-ordination…

Q: is sugar water considered to be a heterogenous mixture and if so why

A: A homogeneous mixture is the one in which composition of molecules is uniform throughout the…

Q: Part A- Does a liquid release energy or absorbs energy when it changes to a solid?(think of when…

A: During phase changes, energy is either released or absorbed by the substances involved. Here, the…

Q: 4) Find the molarity of NaCl in solution Use Equation editor here to show all your work! You can…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: True or False When a physical change occurs,  a change in state occurs which indicates that a new…

A: In a physical reaction the property of the component ramains same as before the reaction. e.g. Ice…

Analytical Tools

Analytical tools or analysis tools help one to get into a conclusion or results from the data collected. Analytical tools can be applied for simple data sets and also in the case of big data analytics.