What is the percentage by mass of sodium (Na) in a formula unit of sodium hydrogen carbonate (NaHCO3)? 44.2% O 37.7% 27.4% 16.7%

Q: GIven the following Salinity (S) and Freezing Temperature F tables we can expect for a salinity of…

A: From the table we can see clearly as the salinity is increasing freezing temperature is decreasing.

Q: Fick’s Law of Diffusion states the rate of diffusion is directly proportional to a. the area…

A: Fick's Law describes the factors that impact diffusion of gas across membranes.   R=DA*∆pd   Where,…

Q: May I know why oil is considered heterogenous and suspension?

A: Answer:  Oil is considered as various physical properties.

Q: A. Why do you think cohesion is important? What is the difference of cohesion to adhesion? Give…

A: Cohesion and adhesion are two different terms which plays a great importants while explaining many…

Q: sugars from honey and 100% fruit juice are natural one therefore we don't need to limit the amount…

A: Given  sugars from honey and 100% fruit juice are natural one therefore we don't need to limit the…

Q: why milk soap rainbow experiment is related to art? why it looks creative,? and looks interesting.

A: This happens because the soap changes the surface tension of the milk, and this change in surface…

Q: The boiling point of a 1.03% by mass magnesium chloride solution

A: If the total mass of magnesium chloride solution is 100 g, then it contains 1.03 g magnesium…

Q: In AAS, which of the following terms descrive a process  on how a liquid sample is converted into…

A:

Q: 10. Chemical substance commonly used as a flavor enhancer: A. Monosodium glutamate (MSG) C.…

A: Given evolume of food through the presence of carbon dioxide

Q: Which set-up took less time to cook hard-boiled eggs?why?

A:

Q: Determine the number of valence electrons in SO, and then draw the corresponding Lewis structure (by…

A: Valence electrons: It is the number of electrons present in the outermost shell of an atom. Example:…

Q: A chemical described as having a local effects causes damage that is: a. widespread     b. where…

A: A chemical may be harmful or be useful for a particular action in the body. There are many different…

Q: What is the equivalent weight per mole of carbonic acid? a. 4 b. 2 c.1 d. 3

A: Here the formula used will be   Number if equivalents= moles x the n factor  Here the n factor for…

Q: The balance of water in the body takes into account the intake of food, liquids and: a. the hydrogen…

A: Correct option is c. That is metabolic reactions.  Incorrect option are: a. the hydrogen bridges…

Q: 23. Which of the following compounds violates octet rule? a. CH4 b. PCIS c. SO2 d. H20

A: Since you have posted multiple questions, we will solve only one question for you. To get the…

Q: 17. What is the mass of an object that has a density of 0.23 g/cm and whse volume is 52 cm?

A: As requested, the solution of question number 17 is as follows: Given:  Density of substance=…

Q: the

A: Dear student I have given answer to your question in the image format.

Q: Which of the following is a physical process of water purification which separates suspended solid…

A: Sedimentation is a physical water treatment process using gravity to remove suspended solids from…

Q: 180 Phase Change Diayram 160 140 120 100 60 40 12 14 Time (mintes) 10 16 18 20 22 At point A, the…

A:

Q: Methane, CH, Methanol, CH,0 H. H. H-C-H H-C--H H. H. 24. List three properties scientists should…

A: Methane and methanol are different in terms that, methane have all four groups , Hydrogen groups…

Q: Erwin Smith wants to determine the average concentration of amino acids present in the spinal fluid…

A: To determine the average concentration of amino acids present in the spinal fluid of Eldians.

Q: Which effect do you observe, when 2 or more metal-containing minerals are placed together in water?…

A: A multiple choice question based on minerals, which is to be accomplished.

Q: Write TRUE if the BOLD word/phrase makes the statement correct. Otherwise, write the correct…

A: We have to tell whether the bold words/phrases are true or not. If they are not true, then we have…

Q: Which intermolecular force requires a polar molecule? A. dispersion forces  B. covalent bonding…

A: Interpretation: Which kind of intermolecular force requires a polar molecule is to be determined.…

Q: Fish kills regularly take place on hot summer days. Fish kills occur in summer due to __ a.…

A: We have to tell the reason for fish kills to occur on summer days. The given options are  a.…

Q: What should be done with the official solution (boric acid) before using it for ophthalmic purposes?…

A: boric acid solution:- boric acid have some antiseptic properties due to that it is used in…

Q: 4 ounces of 80 proof liquor is equilvaent to how many standard drinks?

A: Given,4 ounces of 80 proof liquor

Q: What can we use hard water for?

A: USES OF HARD WATER Uses of hard water is given as following : 1. Hard water contains extra minerals…

Q: What are key things for hydrocooler method of food commodities?

A: Hydrocooling is a post-harvest technique used to rapidly cool fruits and vegetables to preserve…

Q: A parent witnessed his child who just ingested an old silvery coin. This is an emergency because…

A: Silver is non-toxic and one of the precious metals with the symbol Ag and it is used to make…

Q: Match the following samples of hydrocarcon (Column A) to its appropriate physical property and…

A:

Q: 1.The random movement of particles from an area of high to low concentration is known as  a…

A: 1.The random movement of particles from an area of high to low concentration is known as diffusion.…

Q: What kind of reaction is show below (between hydrogen peroxide and magnesium sulfite). a. H2O2(aq) +…

A: a) The given reaction is, H2O2(aq) + MgSO3(aq)  --->  MgSO4 (aq) + H2O The given reaction is…

Q: Can two samples that have different sets of chemical elements be the same mineral? Why or why not?…

A: A substance is referred to as a mineral if it is an inorganic, homogenous, crystalline solid that…

Q: Medical Air refers to a clean supply of compressed air used in hospitals and healthcare facilities…

A:

Q: 18. How would you best separate a mixture of volatile gases propane, butane, and Isopi C. Magnetic…

A:

Q: why does polar liquid solvent cannot dissolve non-polar liquid  solute? Select one: a. like…

A: The polar compounds have polar bonds and non-polar compounds have non-polar bonds.

Q: Why do we need to conserve water? A. It is a non-renewable source B. It is unlimited c. It is…

A:

Q: Compare the following set of molecules in terms of the properties indicated in each item. Explain…

A: Intermolecular spacing and intermolecular force of attraction existing between the individual…

Q: Explain why Styrofoam a good is insulating material. Select one: a. Styrofoam is made of a polymer…

A: Stryofoam is an insulating material. It is commonly called as 'Blue board'. It is commonly used for…

Q: 26. What results should scientists see for each of these properties if the substance is similar to…

A:

Q: Is it true that Biology majors should take chemistry and why?

A: Science is the branch of subjects that deals with different streams in surroundings such as biology,…