Atomic Mass Numbér of Number of Name Symbol Charge number Number neutrons Electrons hydrogen-2 2H 2. 1 1 3H sodium-22 22Na* 10 12 24 12

Q: "Analytical data are never more reliable than the sampling technique". Explain this statement.

A: Answer- Analytical data is a collection of data that is used to support decision making and/or…

Q: True or False. Acetone and alcohol can be used by the human body as energy sources even though in…

A: Exploring the metabolic processes of the human body raises the subject of the use of acetone and…

Q: K Maya Paniagua - RC Ch 10 HW.p X E The State of Nature & the Social The School District of Palm…

A:

Q: Chemistry . What are the limitations that Forensic investigators face.

A: Forensic investigation face some limitations in their investments.

Q: II. Tell whether if the following is an example of solid, liquid or gas. Write S for solid, L for…

A: Since you have posted multiple questions, we will solve only first question for you. If you want any…

Q: density of irregular solid mass of irregular solid 9.039 g initial volume 68 mL final volume 74…

A: Given , Mass of irregular solid = 9.039 g Initial volume = 68 mL Final volume = 74 mL Total volume…

Q: Examples of Conductivity meters

A: A conductivity meter measures conductance by means of electronics connected to a sensor  immersed in…

Q: Which of the following are chemical changes?         mold Distillation of Salt Water Cutting Fabric…

A: In chemical changes two or more substances combine to obtain a new substance which is totally…

Q: A) It has a covalent double bond.

A: Iodine is 17th(VIIA)group element• it has 7 valence shell electrons• So required single electron to…

Q: how do you convert 50 microliters to dekaliters using dimensional analysis

A:

Q: Drag and drop each term to correctly complete the prompt. Compounds are formed when two or more…

A: Element and compounds are defined based on the composition of atoms. Based on the composition of…

Q: Two samples have the exact same melting points. Are they the same compound? How could you tell for…

A: Given that  The two samples have the same melting point.

Q: Which practice is NOT used to gauge accuracy? raw data and results from calibration checks B.…

A: Accuracy is used to determine whether given results is close to true value and it is free from…

Q: It is a type of mixture with particles evenly scattered in a dispersed medium without settling down

A: Mixture is the  combination of  two substance.  There are  two types- 1) Homogeneous  mixture.  2)…

Q: Calculate mass recovered.  Calculate percent recovery.  initial mass: 2.09 g watch glass + filter…

A: The question is based on the concept of experimental calculations. we have to calculate mass…

Q: Katie heats her hydrate to remove the water and obtain the anhydrous cobalt (II) compound CoCl2. Her…

A: Molar mass of H2O is 18.02 g/mol. Molar mass of CoCl2 is 129.84 g/mol. Mass of water removed can be…

Q: A theoretical plate is: the theoretical glassware it takes to distill a specific mixture. an…

A: We need to find what is a theoritical plate.

Q: 17. You have 41 mL L of graduated cylinder, it now reads 77 mL. What is the volume of the pebble?

A: Initial water level=41mL Water level after dropping pebble=77mL

Q: A liquid in the lab has a density of 1.24 g/cm. What is the mass in grams of 254 mL of the liquid?…

A: The density of a substance is defined as a mass of a unit volume of the substance. The density of a…

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: Which would contain more molecules. 100 grams of Image G or 100 grams of Image C

A: We need to compare number of molecules in same mass of G and C.

Q: Every year Jeff Bezos sells 5 billion dollars worth of Amazon stock to fund his commercial space…

A: 5 billion dollars = 5,000,000,000 dollars I had a job making 250 dollars an hour So, total hours I…

Q: Which of the following is incorrect: Assay is the process of determining how much of a given sample…

A: We will choose the incorrect answer from the following statement.

Q: Briefly define the phrase “fit-for-purpose” in relation to analytical chemistry.

A: It is an ideal standard in analytical chemistry to obtain data of suitable quality. Both analysts…

Q: nisd.net/common-asses NaCl and SiO₂ Type of Matter: Property: Technique: SiO₂ Type of Matter: Fe…

A:

Q: What is the mass, in g, of 2.67 × 10 nickel (Ni) atoms? Enter your answer in scientific notation. 12…

A: The given data contains, Atoms of nickel = 2.67×1012 Molar mass of Nickel = 58.69 g/mol.

Q: Is it supposed to be 10^-14 which would equal 13.4 or 10^24 which equals 23.4?

A: Given :  Kw at 50°C = 3.95 × 10-14

Q: explain how decantation, filtration, and evaporation are done as a separation process

A: Decantation:  It is the process by which we can separate mixtures of two immiscible liquids.…

Q: Which one is the most common method used for the purification of liquid mixtures?

A: The mixture of liquid can be separated by different methods into pure liquids.

Q: Glassware/Tool Do’s Donts 1. Stirring Rod     2. Glass Funnel     3. Wire Mesh     4. Mortar and…

A: Glassware refers to laboratory equipment made of glass, typically used in scientific experiments,…

Q: Which practice is NOT used to gauge accuracy? raw data and results from calibration checks B.…

A: Correct option is (e) sample rejection .

Q: The U.S. Government has about 1.23 * 107 pounds of gold in Fort Knox. How much is it worth at…

A: 1.23 X 107 pounds of gold = 12 X 1.23 X 107 Toz = 14.76 X 107 Toz

Q: (4) NHẠC|(s) → NH318) + HC\6) ΔΗ4? Solid ammonium chloride sublimes (i.e., changes from a solid to a…

A: To find out the enthalpy of sublimation and decomposition of ammonium chloride in terms of the…

Q: A mixture of 200.5 g of Cl, and 43.8 g of P reacts completely to form PCl, and PCI,. Find the mass…

A:

Q: In the copper experiment, a copper wire For the toolbar, press ALT+F10 (PC) or

A: Copper is dissolved in nitric acid

Q: White sand is made of silica (silicon dioxide, or SiO2), which has a density of 2.20 g/cm³. How many…

A:

Q: What is the main purpose of recrystallisation? A. Chemists recrystallise solids when they want to…

A: Crystallization is the process by which a solid forms , where the atoms or molecules are highly…

Q: The study of detecting small quantities of substances in samples would most likely be performed by a…

A:

Q: Chemical properties include (choose the best answer) Melting and boiling point Density O Reactivity…

A: When two or more substance reacts with each other to form a new substance having different…

Q: Blue beads (Al): Yellow beads (S): Green beads (0):

A: FORMULA Al2 (SO4 )3 Al=2 atoms S=3 atoms O= 12 atoms     blue beads Al= 2 yellow beads S=3 green…

Q: What states of matter present in t2-t3

A: Basically there are three states of matter present. They are: Solids Liquids Gases Solids are…

Q: Glass is a material that allows almost all the light to travel through and form a clear image. O…

A: Glasses are generally of two types- transparent , and translucent.

Q: Please

A: Molar mas sof Compound is calculated by multiplying index with each element mass and then add all…