Water and the human body. How does a human being’s water content change throughout his life? (fetal stage, at birth, adulthood). How much water do we consume in our lifetime

Q: How much water would 29.21 grams of an insoluble sample with a density per of 4.35 g/ml displace?

A: Given, the mass of the insoluble sample = 29.21 g The density of the sample = 4.35 g/mL We have to…

Q: List the common steps taken in treating water for a public water system?

A: The common steps taken in treating water for a public water system have to be listed below.

Q: Sewage containing organic waste should not be disposed into water bodies because it causes major…

A: 1. Every animal survives due to the presence of oxygen in the environment.  2. Animals which lies in…

Q: Granulated sugar (sucrose, C12H22011) has an average density of about 0.71 g/cm³. Calculate the…

A:

Q: The solubility of KCl at 20°C is 34.0 g per 100.0 g of water. What is the maximum amount (in grams)…

A: All known compounds can be dissolve in certain solvents whereas they remain insoluble in other…

Q: Is water available in ethanol?

A: Ethanol is an organic chemical compound. It is a primary alcohol. Its formula is CH3−CH2−OH. It…

Q: 9. How many moles of phosphorus pentachloride are needed to make 35 liters of water? 35 LHO 4 moles…

A: The number of moles of a subtance is calculated by the formula, n=mM Where, m is the given mass of…

Q: Determine the molarity of a solution formed by dissolving 19 g of NaBr in enough water to yield 755…

A: Number of moles of a substance is equal to the mass of a substance divided by its molar mass.

Q: Describe the nature of nonpolar and polar covalent bonds, ionic bonds, and hydrogen bonds. Why are…

A: Chemical bond results when there is positive interaction between the species. The species can be…

Q: 25 grams of fruit sugar in sufficient quantity of water to make 100 grams of solution.  What is the…

A:

Q: What kind of change is present in dissolving salt in water? Rusting of iron?

A: Physical change refers to a change in which the molecules are rearranged but their internal…

Q: ADWA) sets a limit for mercury- a toxin to the central nervous system- at 0.0020 ppm by mass. Water…

A: In this question we have to find out the volume of water in litre by a person have to consume to…

Q: 2. The process of formation of a liquid solution can be better understood by breaking the process…

A: Given: Process of formation of a liquid solution that can be better understood by breaking the…

Q: Evaporation of freshwater from oceans, formation of sea ice and ice bergs all contribute to causing…

A: A. increase

Q: What does decomposing of pure water into its constituent elements indicate?

A: In decomposition reaction single compound is broken down into two or more simpler substances.…

Q: A solution is prepared by dissolving 98.6 g of NaI in enough water to form 885 mL of solution.…

A: Given : Mass of solute i.e NaI = 98.6 g Density of solution = 1.06 g/mL And volume of solution = 885…

Q: How much of the K2CO3 will dissolve? b) Is the solution saturated or unsaturated? c) What is the…

A:

Q: cedstock. To begin, you’ll make 20 mL of a 10% solution of your assigned fuel. a. How many grams of…

A: Beginning solution = 20 mL of 10% fuel Diluted concentration = 5% fuel.   It is desired to calculate…

Q: 2NaOH + H2SO4→ → Na2SO4 + 2H2O What is the mole ratio of sodium hydroxide to water?

A: Sodium hydroxide reacts with sulfuric acid to form sodium sulfate and water. The equation for the…

Q: Seawater has a concentration of 0.60 M NaCl. The acceptable amount of NaCl in drinking water is…

A: Moles of NaCl in 1L of 0.6M water = Volume × molarity = 0.06 moles.Mass of sodium = Moles × molar…

Q: 16. Write a balanced chemical reaction for the combustion of The combustion of propane (C3Hs) can…

A:

Q: the unknown mixture is heated and the NaHCO3 decomposes, what happens to the NaCl and how does that…

A: The answer is as follows:

Q: If you take 1 teaspoon of salt and dissolve in 1 cup of water, what would look like? Sketch in…

A: Table salt (NaCl) dissolved in water. NaCl is an electrolyte Does not conduct electricity in solid…

Q: the concentration in parts per billion (ppb)

A: The environmental protection agency (EPA) has set the legal limit, known as the maximum contaminant…

Q: d) Calcium ions (Ca) are present at relatively low concentrations (~100nM) within the cytoplasm of…

A: The concentration of calcium ions in the cytoplasm is = 100 nM The number of calcium ions (molecule)…

Q: Based off the molecular polarity of water, which of the following molecules would be soluble in…

A: Polar species are soluble in water, while nonpolar species are soluble in oils and fats. Covalent…

Q: iii) H* + OH- → H2O AH° =- 57.32 kJ is an example of ....... a) heat of formation b) heat of…

A: Enthalpy (heat) of a reaction is the energy required or released in a chemical reaction.  Therefore,…

Q: Whats the mass of KIO3 that will consume 25 ml of .1 M Na2S2O3?

A: The mass of KIO3 that will consume 25 ml of .1 M Na2S2O3, it is to be calculated. Given: Volume of…

Q: How much fish paste in grams will you add to 1.5 kg mix vegetable to be able to come up with a…

A:

Q: What are two examples of hydrated compounds? What is there chemical formula?

A: Hydrate compounds: Compounds that have definite ratio of water molecule as an integral part of the…

Q: In your own words, Explain and Give two examples of important solutions in nature and explain why…

A: Solution  A solution is a homogeneous mixture of two or more components in which the particle size…

Q: 4. The oxygen atom of water is covalently bonded with the two hydrogen atoms in a water molecule. 5.…

A: Given,

Q: What are the concentrations of chemicals interest to water treatment and potable water supply…

A: The process in which the quality of water improves to make it a appropriate use is known as water…

Q: The degradation of organic waste to methane and other gases requires water content. Determine the…

A: Solutions

Q: Based on this. What was the percentage by mass of water in the sample?

A: Given sample is = MgSO4·7H2OMolar mass of  MgSO4·7H2OMgSO4·7H2O =  24 + 32 + 16×4 + 72+16…

Q: 2. Why does a water molecule have polarity? 3. What are the physical and chemical properties of…

A: The following  concept  are used to explain this all questions .

Q: When you dissolve KCl in water, does the reaction give off heat or absorb heat? Is the dissolution…

A: The enthalpy of a reaction is determined as the amount of heat released or gained during the course…

Q: 50.0g of NaCl was added to 500.0g of water. Calculate the mass percent of NaCl

A: Mass percent =  all mass are must be present in same unit either gram or kilogram.

Q: Potassium nitrate has a lattice energy of -163.8 kcal/mol and a heat of hydration of -155.5…

A: Enthalpy of given solution can be determined using the equation given below:

Q: When Na3(PO4) and glucose are added to water solution(s) will conduct electricity. (K) both, both…

A: Na3( PO4) is a ionic compound and a strong electrolyte  . Therefore when it is dissolved in water it…

Q: Magnesium hydroxide is not soluble in water. When magnesium hydroxide and water are combined what…

A: Given : Magnesium hydroxide is insoluble in water.

Q: A hard water sample contains 0.0085% Ca by mass (in the form of Ca2 + ions). How much water (in…

A: Percentage by mass refers to the mass of substance present in 100 g of the solution (water) Thus,…

Q: 10. A physician orders magnesium sulfate to be administered at a rate of 2 g/h to a patient…

A: The solution given here is 500 ml of 2% magnesium sulphate.2% solution means 2g of MgSo4 is present…

Q: The EPA limit for manganese in drinking water is 0.05 mg per L of solution. What is this…

A: Given that EPA limit for manganese in drinking water is 0.05 mg/L. We have to find this value of…

Q: If cobalt(II) sulfate is heated too strongly, the following reaction will occur CoSO4(s) à CoO(s) +…

A: The dehydration reaction can be defined as the conversion reaction which involves the loss of water…

Q: A 20.0% solution of Kcl has a mass of 400 grams. What mass of KCl is contained in this solution?

A: Since ,           % by mass=mass of KCL in solutionmass of solutionx100%

Q: How much water would 29.21 grams of an insoluble sample with a density of 4.35 g/mL displace ?

A: Given information: Density is 4.35 g/mL Mass is 29.21 grams

Q: In what ways can we help improve the quality of water in our community, considering the knowledge,…

A: Improve Quality  of water  is necessary  for better Health of a person as Water is the important…

Q: How much of Earth's water is stored in the oceans? 3% 50% O 70% 97%

A: The ocean holds about 97 percent of the Earth's water; the remaining three percent is found in…

Q: A fluoridated water supply contains 3 mg/L of F-. What is the maximum amount of Ca 2+, expressed in…

A: Let S be the solubility of CaF2. Now let us express the amount of Fluoride in mol/L (M), it's…