Read each of the following to the correct number of significant figures. Note that laboratory glassware should always be read from the bottom of the meniscus. Digital balances normally display mass to the correct number of significant figures for that particular balance. Part B 7.43 27.4 27.432 27.43

Q: the characteristics of the mixtures to be separated and pick a compatible separation technique. How…

A: To separate salt from a mixture of salt ,we have two methods 1 Dissolve  the mixture in the water…

Q: what are the uses of inorganic chemistry in medicine or pharmacy

A: Inorganic chemistry can be defined as the branch of chemistry that deals with substances containing…

Q: White silver chloride in sunlight turns to           Grey       Yellow       Remain white       Red

A: When silver chloride gets exposed to sunlight it decomposes

Q: microscopic

A: According to the question, we need to describe the microscopic view of compound sodium chloride i.e…

Q: IDENTIFY THE TEST INVOLVED IN EACH.

A: A question based on introduction to organic chemistry that is to be accomplished.

Q: Describe the following materials. What are they used for? a. Weighing bottles b. Desiccator and…

A: Weighing bottles, desiccator, crucible and filter paper are the laboratory utensils.

Q: why are pH measurements significant upon studying chemistry? How will it benefit us?

A:

Q: A green solution of a pH indicator was added to a sample of spring water. The resulting solution was…

A: A chemical change is an irreversible change that takes place due to a chemical reaction. A chemical…

Q: a. Describe the arrangement and movement of particles in each of the three states of matter. Use…

A: Given :  a. Describe the arrangement and movement of particles in each of the three states of…

Q: 4. During diffusion, particles move from an area of high concentration to  A. nowhere they stay in…

A:

Q: An ore is O a mixture of two or more metallic elements. a natural source from which a metal can be…

A: The metals can be extracted from the compounds which are occuring in nature in the earth crest. The…

Q: What is a chemical property of sodium?

A: Sodium is an element with atomic number 11 and represented by the symbol Na.

Q: Using CER and your knowledge from data listed above, if the temperature of ethanol solution…

A:

Q: Elements of Group IV that is non-metal Germanium a Lead b O Silicon.c Carbon d

A:

Q: Explain the three process of gravimetric analysis

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Q: A student dissolves 111 g of compound Q in one liter of hot water. All of compound Q dissolves. The…

A: When we dissolve a solute in solvent, there is some fixed amount of solute which can dissolve in a…

Q: is a chemical reaction and a chemical change the same

A:

Q: During which of the following processes will the chemical composition of a substance remain…

A: Sublimation: A process of conversion of solid directly into gas Oxidation: Increase in oxidation…

Q: 4. Explain the laboratory rules for waste disposal.

A: Given question demands the all type of waste disposal rules used in the laboratory. We know that, in…

Q: What is the purpose of the laboratory exercise about simple distillation and fractional distillation

A: To refining the liquid through a separation process is known as distillation. The main purpose…

Q: The First Law of Thermodynamics tells us A) that the energy of the universe is always increasing. B)…

A:

Q: tation and fiitra

A: 9) As we know, water and sand is heterogeneou mixture. So it can be separated by decantation. But…

Q: A. Solubility of Solids in Liquids Put equally small amount (1/2 teaspoon) of the substances listed…

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Q: spectator ions.

A:

Q: 15. When solid lithium metal is exposed to pure nitrogen gas, a rapid reaction occurs. The only…

A: Lithium has high reactivity towards nitrogen and it rapidly reacts with N2 to form lithium nitride.

Q: The number of neurons in an atom is equal to what?

A: Introduction: Each element in the periodic table has a particular number of protons that is equal to…

Q: a 0.4815 g sample of potassium iodide yields 0.7562 g of silver iodide gravimetrically, determine…

A: Mass of potassium iodide = 0.4815 g

Q: How to convert mercury into gold?

A: This may possible by neuclear change as shown my handwriten solution.

Q: Describe the properties of the solid,liquid, and gaseous states.

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Q: Why should you know the composition of the weighing form? a. So that it can be washed properly b.…

A: Composition of the compound tells about the mass .

Q: What is the difference between Class A and Class B glassware? Which Class (A or B) would be better…

A: The glasswares are the apparatus that is used in laboratories for measurements and storage.

Q: What is the practical importance of extraction in relation to chemistry especially when it comes to…

A: Extraction is important  for  Isolating important  materials from plants  .

Q: Use a spreadsheet program, such as Microsoft Excel, to graph the data points and determine the…

A: To plot the given spectroscopic data in Microsoft excel and to determine the equation of the best…

Q: Describe the role played by the electron gun and the electric field in the mass spectrometer.  State…

A: Mass spectrometry It is the instrumental method for the analysis of a compound's molecular weight.…

Q: Which of the following statements is correct? a. the mass of chemical substances deposited at the…

A: The correct option is:

Q: Is there a chemical reaction between copper and silver nitrate? Which elements react, and what is…

A: The chemical formula is a short term notation which is used to represent the no. of atoms present in…

Q: How do you measure the amount of heavy metals concentration in soil?

A: Heavy metals refer to any metallic chemical element that has a relatively high density and is toxic…

Q: tiny,liquid droplets found in the atmosphere

A: The tiny,liquid droplets found in the atmosphere is known as aerosols. These aerosols are the…

Q: Two chemicals at room temperature are mixed and their container starts to feel warm to the touch.…

A: Chemical reactions are of two types- Endothermic and exothermic reactions. When heat is absorbed in…

Q: Chlorine gas easily gains two electrons to form two chloride ions. In this process, chlorine is

A: Oxidizing agent is the substance which has the tendency to oxidize others and reduce itself .

Q: The most common minerals found in soils are combinations of which four elements, which are also the…

A: A question about elements that is to be accomplished.

Q: the symbol for the state its in

A: Recall the given reaction,                 3 Cl2 g  +  2 Cr3+  aq  +  14 OH- aq  →  6 Cl- aq  +…

Q: A man went door to door posing as a goldsmith He promised to bring back the glitter of the old and…

A: An atom is mainly composed of three sub-particles; electrons, protons and neutrons. These particles…

Q: who received the Nobel Prize in Chemistry in 1912 ?

A: Nobel prize is one of the highest rank award given in the fields of chemistry, physics, literature,…

Q: A piece of magnesium metal is placed in a solution of hydrochloric acid, resulting in the formation…

A:

States of Matter

The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates). 

Chemical Reactions and Equations

When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.